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202
security advisoryDoSpatchopenSUSE: 2023:0020-1 Important: Libheimdal DoS and Overflow Issues
An update that fixes 7 vulnerabilities is now available. . openSUSE Security Update: Security update for libheimdal ______________________________________________________________________________ Announcement ID: openSUSE-SU-2023:0020-1 Rating: important References: Cross-References: CVE-2019-14870 CVE-2021-3671 CVE-2021-44758 CVE-2022-3437 CVE-2022-41916 CVE-2022-42898 CVE-2022-44640 CVSS scores: CVE-2019-14870 (NVD) : 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N CVE-2019-14870 (SUSE): 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N CVE-2021-3671 (NVD) : 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2021-3671 (SUSE): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2021-44758 (NVD) : 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2022-3437 (SUSE): 5.9 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L CVE-2022-41916 (NVD) : 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2022-42898 (NVD) : 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2022-42898 (SUSE): 6.4 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:L CVE-2022-44640 (NVD) : 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Affected Products: openSUSE Backports SLE-15-SP3 ______________________________________________________________________________ An update that fixes 7 vulnerabilities is now available. Description: This update for libheimdal fixes the following issues: Update to version 7.8.0 - CVE-2022-42898 PAC parse integer overflows - CVE-2022-3437 Overflows and non-constant time leaks in DES{,3} and arcfour - CVE-2022-41916 Fix Unicode normalization read of 1 bytes past end of array - CVE-2021-44758 A null pointer de-reference DoS in SPNEGO acceptors - CVE-2021-3671 A null pointer de-reference whenhandling missing sname in TGS-REQ - CVE-2022-44640 Heimdal KDC: invalid free in ASN.1 codec - CVE-2019-14870: Validate client attributes in protocol-transition Patch Instructions: To install this openSUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: - openSUSE Backports SLE-15-SP3: zypper in -t patch openSUSE-2023-20=1 Package List: - openSUSE Backports SLE-15-SP3 (aarch64 i586 ppc64le s390x x86_64): libasn1-8-7.8.0-bp153.2.4.1 libgssapi3-7.8.0-bp153.2.4.1 libhcrypto4-7.8.0-bp153.2.4.1 libhdb9-7.8.0-bp153.2.4.1 libheimbase1-7.8.0-bp153.2.4.1 libheimdal-devel-7.8.0-bp153.2.4.1 libheimedit0-7.8.0-bp153.2.4.1 libheimntlm0-7.8.0-bp153.2.4.1 libhx509-5-7.8.0-bp153.2.4.1 libkadm5clnt7-7.8.0-bp153.2.4.1 libkadm5srv8-7.8.0-bp153.2.4.1 libkafs0-7.8.0-bp153.2.4.1 libkdc2-7.8.0-bp153.2.4.1 libkrb5-26-7.8.0-bp153.2.4.1 libotp0-7.8.0-bp153.2.4.1 libroken18-7.8.0-bp153.2.4.1 libsl0-7.8.0-bp153.2.4.1 libwind0-7.8.0-bp153.2.4.1 References: https://www.suse.com/security/cve/CVE-2019-14870.html https://www.suse.com/security/cve/CVE-2021-3671.html https://www.suse.com/security/cve/CVE-2021-44758.html https://www.suse.com/security/cve/CVE-2022-3437.html https://www.suse.com/security/cve/CVE-2022-41916.html https://www.suse.com/security/cve/CVE-2022-42898.html https://www.suse.com/security/cve/CVE-2022-44640.html . A critical announcement for Fedora now tackles various security flaws in libheimdal, ensuring users' protection.. libheimdal Patch, openSUSE Update, Integer Overflow, Security Advisory, DoS Fix. . Severity: Important. LinuxSecurity.com Team
Jan 16, 2023
•Important
OpenSUSE
202
security advisorycriticalDoSopenSUSE: 2023:0019-1 Important DoS Fixes in Libheimdal
An update that fixes 7 vulnerabilities is now available. . openSUSE Security Update: Security update for libheimdal ______________________________________________________________________________ Announcement ID: openSUSE-SU-2023:0019-1 Rating: important References: Cross-References: CVE-2019-14870 CVE-2021-3671 CVE-2021-44758 CVE-2022-3437 CVE-2022-41916 CVE-2022-42898 CVE-2022-44640 CVSS scores: CVE-2019-14870 (NVD) : 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N CVE-2019-14870 (SUSE): 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N CVE-2021-3671 (NVD) : 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2021-3671 (SUSE): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2021-44758 (NVD) : 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2022-3437 (SUSE): 5.9 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L CVE-2022-41916 (NVD) : 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2022-42898 (NVD) : 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2022-42898 (SUSE): 6.4 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:L CVE-2022-44640 (NVD) : 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Affected Products: openSUSE Backports SLE-15-SP4 ______________________________________________________________________________ An update that fixes 7 vulnerabilities is now available. Description: This update for libheimdal fixes the following issues: Update to version 7.8.0 - CVE-2022-42898 PAC parse integer overflows - CVE-2022-3437 Overflows and non-constant time leaks in DES{,3} and arcfour - CVE-2022-41916 Fix Unicode normalization read of 1 bytes past end of array - CVE-2021-44758 A null pointer de-reference DoS in SPNEGO acceptors - CVE-2021-3671 A null pointer de-reference whenhandling missing sname in TGS-REQ - CVE-2022-44640 Heimdal KDC: invalid free in ASN.1 codec - CVE-2019-14870: Validate client attributes in protocol-transition Patch Instructions: To install this openSUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: - openSUSE Backports SLE-15-SP4: zypper in -t patch openSUSE-2023-19=1 Package List: - openSUSE Backports SLE-15-SP4 (aarch64 i586 ppc64le s390x x86_64): libasn1-8-7.8.0-bp154.2.4.1 libgssapi3-7.8.0-bp154.2.4.1 libhcrypto4-7.8.0-bp154.2.4.1 libhdb9-7.8.0-bp154.2.4.1 libheimbase1-7.8.0-bp154.2.4.1 libheimdal-devel-7.8.0-bp154.2.4.1 libheimedit0-7.8.0-bp154.2.4.1 libheimntlm0-7.8.0-bp154.2.4.1 libhx509-5-7.8.0-bp154.2.4.1 libkadm5clnt7-7.8.0-bp154.2.4.1 libkadm5srv8-7.8.0-bp154.2.4.1 libkafs0-7.8.0-bp154.2.4.1 libkdc2-7.8.0-bp154.2.4.1 libkrb5-26-7.8.0-bp154.2.4.1 libotp0-7.8.0-bp154.2.4.1 libroken18-7.8.0-bp154.2.4.1 libsl0-7.8.0-bp154.2.4.1 libwind0-7.8.0-bp154.2.4.1 References: https://www.suse.com/security/cve/CVE-2019-14870.html https://www.suse.com/security/cve/CVE-2021-3671.html https://www.suse.com/security/cve/CVE-2021-44758.html https://www.suse.com/security/cve/CVE-2022-3437.html https://www.suse.com/security/cve/CVE-2022-41916.html https://www.suse.com/security/cve/CVE-2022-42898.html https://www.suse.com/security/cve/CVE-2022-44640.html . Crucial libheimdal security patch released to tackle several urgent vulnerabilities. Immediate implementation is recommended.. libheimdal Update, Important Security Advisory, openSUSE Patch. . Severity: Important. LinuxSecurity.com Team
Jan 16, 2023
•Important
OpenSUSE
202
security advisorymoderateupdateopenSUSE: 2019:1888-1 Moderate: libheimdal KDC Issues and Fixes
An update that fixes two vulnerabilities is now available.. openSUSE Security Update: Security update for libheimdal ______________________________________________________________________________ Announcement ID: openSUSE-SU-2019:1888-1 Rating: moderate References: #1047218 #1084909 Cross-References: CVE-2018-16860 CVE-2019-12098 Affected Products: openSUSE Backports SLE-15-SP1 ______________________________________________________________________________ An update that fixes two vulnerabilities is now available. Description: This update for libheimdal fixes the following issues: libheimdal was updated to version 7.7.0: + Bug fixes: - PKCS#11 hcrypto back-end: + initialize the p11_module_load function list + verify that not only is a mechanism present but that its mechanism info states that it offers the required encryption, decryption or digest services - krb5: + Starting with 7.6, Heimdal permitted requesting authenticated anonymous tickets. However, it did not verify that a KDC in fact returned an anonymous ticket when one was requested. + Cease setting the KDCOption reaquest_anonymous flag when issuing S4UProxy (constrained delegation) TGS requests. + when the Win2K PKINIT compatibility option is set, do not require krbtgt otherName to match when validating KDC certificate. + set PKINIT_BTMM flag per Apple implementation + use memset_s() instead of memset() - kdc: + When generating KRB5SignedPath in the AS, use the reply client name rather than the one from the request, so validation will work correctly in the TGS. + allow checksum of PA-FOR-USER to be HMAC_MD5. Even if TGT used an enctype with a different checksum. Per [MS-SFU] 2.2.1 PA-FOR-USER the checksum is always HMAC_MD5, and that's what Windows and MIT clients send. In Heimdal both the client and kdcuse instead the checksum of the TGT, and therefore work with each other but Windows and MIT clients fail against Heimdal KDC. Both Windows and MIT KDC would allow any keyed checksum to be used so Heimdal client work fine against it. Change Heimdal KDC to allow HMAC_MD5 even for non RC4 based TGT in order to support per-spec clients. + use memset_s() instead of memset() + Detect Heimdal 1.0 through 7.6 clients that issue S4UProxy (constrained delegation) TGS Requests with the request anonymous flag set. These requests will be treated as S4UProxy requests and not anonymous requests. - HDB: + Set SQLite3 backend default page size to 8KB. + Add hdb_set_sync() method - kadmind: + disable HDB sync during database load avoiding unnecessary disk i/o. - ipropd: + disable HDB sync during receive_everything. Doing an fsync per-record when receiving the complete HDB is a performance disaster. Among other things, if the HDB is very large, then one slave receving a full HDB can cause other slaves to timeout and, if HDB write activity is high enough to cause iprop log truncation, then also need full syncs, which leads to a cycle of full syncs for all slaves until HDB write activity drops. Allowing the iprop log to be larger helps, but improving receive_everything() performance helps even more. - kinit: + Anonymous PKINIT tickets discard the realm information used to locate the issuing AS. Store the issuing realm in the credentials cache in order to locate a KDC which can renew them. + Do not leak the result of krb5_cc_get_config() when determining anonymous PKINIT start realm. - klist: + Show transited-policy-checked, ok-as-delegate and anonymous flags when listing credentials. - tests: + Regenerate certs so that they expire before the 2038 armageddon so the test suite will pass on 32-bit operating systems until the underlying issues can be resolved. - documentation: + rename verify-password to verify-password-quality + hprop default mode is encrypt + kadmind "all" permission does not include "get-keys" + verify-password-quality might not be stateless Version 7.6.0: + Security (#555): - CVE-2018-16860 Heimdal KDC: Reject PA-S4U2Self with unkeyed checksum When the Heimdal KDC checks the checksum that is placed on the S4U2Self packet by the server to protect the requested principal against modification, it does not confirm that the checksum algorithm that protects the user name (principal) in the request is keyed. This allows a man-in-the-middle attacker who can intercept the request to the KDC to modify the packet by replacing the user name (principal) in the request with any desired user name (principal) that exists in the KDC and replace the checksum protecting that name with a CRC32 checksum (which requires no prior knowledge to compute). This would allow a S4U2Self ticket requested on behalf of user name (principal)
Aug 14, 2019
OpenSUSE
202
security advisorymoderateupdateopenSUSE 15: 2019:1688-1 Moderate: libheimdal Update and Fixes
An update that fixes two vulnerabilities is now available.. openSUSE Security Update: Security update for libheimdal ______________________________________________________________________________ Announcement ID: openSUSE-SU-2019:1688-1 Rating: moderate References: #1047218 #1084909 Cross-References: CVE-2018-16860 CVE-2019-12098 Affected Products: openSUSE Backports SLE-15 ______________________________________________________________________________ An update that fixes two vulnerabilities is now available. Description: This update for libheimdal fixes the following issues: libheimdal was updated to version 7.7.0: + Bug fixes: - PKCS#11 hcrypto back-end: + initialize the p11_module_load function list + verify that not only is a mechanism present but that its mechanism info states that it offers the required encryption, decryption or digest services - krb5: + Starting with 7.6, Heimdal permitted requesting authenticated anonymous tickets. However, it did not verify that a KDC in fact returned an anonymous ticket when one was requested. + Cease setting the KDCOption reaquest_anonymous flag when issuing S4UProxy (constrained delegation) TGS requests. + when the Win2K PKINIT compatibility option is set, do not require krbtgt otherName to match when validating KDC certificate. + set PKINIT_BTMM flag per Apple implementation + use memset_s() instead of memset() - kdc: + When generating KRB5SignedPath in the AS, use the reply client name rather than the one from the request, so validation will work correctly in the TGS. + allow checksum of PA-FOR-USER to be HMAC_MD5. Even if TGT used an enctype with a different checksum. Per [MS-SFU] 2.2.1 PA-FOR-USER the checksum is always HMAC_MD5, and that's what Windows and MIT clients send. In Heimdal both the client and kdc useinstead the checksum of the TGT, and therefore work with each other but Windows and MIT clients fail against Heimdal KDC. Both Windows and MIT KDC would allow any keyed checksum to be used so Heimdal client work fine against it. Change Heimdal KDC to allow HMAC_MD5 even for non RC4 based TGT in order to support per-spec clients. + use memset_s() instead of memset() + Detect Heimdal 1.0 through 7.6 clients that issue S4UProxy (constrained delegation) TGS Requests with the request anonymous flag set. These requests will be treated as S4UProxy requests and not anonymous requests. - HDB: + Set SQLite3 backend default page size to 8KB. + Add hdb_set_sync() method - kadmind: + disable HDB sync during database load avoiding unnecessary disk i/o. - ipropd: + disable HDB sync during receive_everything. Doing an fsync per-record when receiving the complete HDB is a performance disaster. Among other things, if the HDB is very large, then one slave receving a full HDB can cause other slaves to timeout and, if HDB write activity is high enough to cause iprop log truncation, then also need full syncs, which leads to a cycle of full syncs for all slaves until HDB write activity drops. Allowing the iprop log to be larger helps, but improving receive_everything() performance helps even more. - kinit: + Anonymous PKINIT tickets discard the realm information used to locate the issuing AS. Store the issuing realm in the credentials cache in order to locate a KDC which can renew them. + Do not leak the result of krb5_cc_get_config() when determining anonymous PKINIT start realm. - klist: + Show transited-policy-checked, ok-as-delegate and anonymous flags when listing credentials. - tests: + Regenerate certs so that they expire before the 2038 armageddon so thetest suite will pass on 32-bit operating systems until the underlying issues can be resolved. - documentation: + rename verify-password to verify-password-quality + hprop default mode is encrypt + kadmind "all" permission does not include "get-keys" + verify-password-quality might not be stateless Version 7.6.0: + Security (#555): - CVE-2018-16860 Heimdal KDC: Reject PA-S4U2Self with unkeyed checksum When the Heimdal KDC checks the checksum that is placed on the S4U2Self packet by the server to protect the requested principal against modification, it does not confirm that the checksum algorithm that protects the user name (principal) in the request is keyed. This allows a man-in-the-middle attacker who can intercept the request to the KDC to modify the packet by replacing the user name (principal) in the request with any desired user name (principal) that exists in the KDC and replace the checksum protecting that name with a CRC32 checksum (which requires no prior knowledge to compute). This would allow a S4U2Self ticket requested on behalf of user name (principal)
Jul 01, 2019
•Important
OpenSUSE
202
security advisorymoderateencryptionopenSUSE: 2019:1682-1 Moderate: libheimdal Fixes Authentication Issues
An update that fixes two vulnerabilities is now available.. openSUSE Security Update: Security update for libheimdal ______________________________________________________________________________ Announcement ID: openSUSE-SU-2019:1682-1 Rating: moderate References: #1047218 #1084909 Cross-References: CVE-2018-16860 CVE-2019-12098 Affected Products: openSUSE Leap 42.3 openSUSE Leap 15.1 openSUSE Leap 15.0 ______________________________________________________________________________ An update that fixes two vulnerabilities is now available. Description: This update for libheimdal fixes the following issues: libheimdal was updated to version 7.7.0: + Bug fixes: - PKCS#11 hcrypto back-end: + initialize the p11_module_load function list + verify that not only is a mechanism present but that its mechanism info states that it offers the required encryption, decryption or digest services - krb5: + Starting with 7.6, Heimdal permitted requesting authenticated anonymous tickets. However, it did not verify that a KDC in fact returned an anonymous ticket when one was requested. + Cease setting the KDCOption reaquest_anonymous flag when issuing S4UProxy (constrained delegation) TGS requests. + when the Win2K PKINIT compatibility option is set, do not require krbtgt otherName to match when validating KDC certificate. + set PKINIT_BTMM flag per Apple implementation + use memset_s() instead of memset() - kdc: + When generating KRB5SignedPath in the AS, use the reply client name rather than the one from the request, so validation will work correctly in the TGS. + allow checksum of PA-FOR-USER to be HMAC_MD5. Even if TGT used an enctype with a different checksum. Per [MS-SFU] 2.2.1 PA-FOR-USER the checksum is always HMAC_MD5, and that's what Windowsand MIT clients send. In Heimdal both the client and kdc use instead the checksum of the TGT, and therefore work with each other but Windows and MIT clients fail against Heimdal KDC. Both Windows and MIT KDC would allow any keyed checksum to be used so Heimdal client work fine against it. Change Heimdal KDC to allow HMAC_MD5 even for non RC4 based TGT in order to support per-spec clients. + use memset_s() instead of memset() + Detect Heimdal 1.0 through 7.6 clients that issue S4UProxy (constrained delegation) TGS Requests with the request anonymous flag set. These requests will be treated as S4UProxy requests and not anonymous requests. - HDB: + Set SQLite3 backend default page size to 8KB. + Add hdb_set_sync() method - kadmind: + disable HDB sync during database load avoiding unnecessary disk i/o. - ipropd: + disable HDB sync during receive_everything. Doing an fsync per-record when receiving the complete HDB is a performance disaster. Among other things, if the HDB is very large, then one slave receving a full HDB can cause other slaves to timeout and, if HDB write activity is high enough to cause iprop log truncation, then also need full syncs, which leads to a cycle of full syncs for all slaves until HDB write activity drops. Allowing the iprop log to be larger helps, but improving receive_everything() performance helps even more. - kinit: + Anonymous PKINIT tickets discard the realm information used to locate the issuing AS. Store the issuing realm in the credentials cache in order to locate a KDC which can renew them. + Do not leak the result of krb5_cc_get_config() when determining anonymous PKINIT start realm. - klist: + Show transited-policy-checked, ok-as-delegate and anonymous flags when listing credentials. - tests: + Regeneratecerts so that they expire before the 2038 armageddon so the test suite will pass on 32-bit operating systems until the underlying issues can be resolved. - documentation: + rename verify-password to verify-password-quality + hprop default mode is encrypt + kadmind "all" permission does not include "get-keys" + verify-password-quality might not be stateless Version 7.6.0: + Security (#555): - CVE-2018-16860 Heimdal KDC: Reject PA-S4U2Self with unkeyed checksum When the Heimdal KDC checks the checksum that is placed on the S4U2Self packet by the server to protect the requested principal against modification, it does not confirm that the checksum algorithm that protects the user name (principal) in the request is keyed. This allows a man-in-the-middle attacker who can intercept the request to the KDC to modify the packet by replacing the user name (principal) in the request with any desired user name (principal) that exists in the KDC and replace the checksum protecting that name with a CRC32 checksum (which requires no prior knowledge to compute). This would allow a S4U2Self ticket requested on behalf of user name (principal)
Jul 01, 2019
OpenSUSE
202
security advisoryimportantremote doopenSUSE Leap 42.3 Critical Alert: Remote DoS Vulnerability in libheimdal
An update that solves one vulnerability and has two fixes is now available.. openSUSE Security Update: Security update for libheimdal ______________________________________________________________________________ Announcement ID: openSUSE-SU-2018:2376-1 Rating: important References: #1047218 #1071675 #1084909 Cross-References: CVE-2017-17439 Affected Products: openSUSE Leap 42.3 ______________________________________________________________________________ An update that solves one vulnerability and has two fixes is now available. Description: This update for libheimdal to version 7.5.0 fixes the following issues: The following security vulnerability was fixed: - CVE-2017-17439: Fixed a remote denial of service vulnerability through which remote unauthenticated attackers were able to crash the KDC by sending a crafted UDP packet containing empty data fields for client name or realm (boo#1071675) The following other bugs were fixed: - Override the build date (boo#1047218) - Use constant hostname (boo#1084909) - Handle long input lines when reloading database dumps - In pre-forked mode, correctly clear the process ids of exited children, allowing new child processes to replace the old. - Fixed incorrect KDC response when no-cross realm TGT exists, allowing client requests to fail quickly rather than time out after trying to get a correct answer from each KDC. Patch Instructions: To install this openSUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: - openSUSE Leap 42.3: zypper in -t patch openSUSE-2018-876=1 Package List: - openSUSE Leap 42.3 (i586 x86_64): libheimdal-7.5.0-9.1 libheimdal-debuginfo-7.5.0-9.1 libheimdal-debugsource-7.5.0-9.1 libheimdal-devel-7.5.0-9.1 References: https://www.suse.com/security/cve/CVE-2017-17439.html https://bugzilla.suse.com/1047218 https://bugzilla.suse.com/1071675 https://bugzilla.suse.com/1084909 -- . The latest libheimdal update addresses significant security vulnerabilities, resolving remote Denial-of-Service risks and improving overall software reliability.. libheimdal security update, openSUSE patch, remote dos threat. . Severity: Important. LinuxSecurity.com Team
Aug 16, 2018
•Important
OpenSUSE
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