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98
security advisorysecurity updateRed HatRed Hat Enterprise Linux 7.6 RHSA-2021:0155-01 Moderate: Dnsmasq Risk
An update for dnsmasq is now available for Red Hat Enterprise Linux 7.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Moderate: dnsmasq security update Advisory ID: RHSA-2021:0155-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:0155 Issue date: 2021-01-19 CVE Names: CVE-2020-25684 CVE-2020-25685 CVE-2020-25686 ==================================================================== 1. Summary: An update for dnsmasq is now available for Red Hat Enterprise Linux 7.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) - x86_64 Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) - x86_64 Red Hat Enterprise Linux Server EUS (v. 7.6) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 7.6) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, ppc64le, s390x Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) - aarch64, ppc64le, s390x 3. Description: The dnsmasq packages contain Dnsmasq, a lightweight DNS (Domain Name Server) forwarder and DHCP (Dynamic Host Configuration Protocol) server. Security Fix(es): * dnsmasq: loose address/port check in reply_query() makes forging replies easier for an off-path attacker (CVE-2020-25684) * dnsmasq: loose query name check inreply_query() makes forging replies easier for an off-path attacker (CVE-2020-25685) * dnsmasq: multiple queries forwarded for the same name makes forging replies easier for an off-path attacker (CVE-2020-25686) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1889686 - CVE-2020-25684 dnsmasq: loose address/port check in reply_query() makes forging replies easier for an off-path attacker 1889688 - CVE-2020-25685 dnsmasq: loose query name check in reply_query() makes forging replies easier for an off-path attacker 1890125 - CVE-2020-25686 dnsmasq: multiple queries forwarded for the same name makes forging replies easier for an off-path attacker 6. Package List: Red Hat Enterprise Linux ComputeNode EUS (v. 7.6): Source: dnsmasq-2.76-7.el7_6.2.src.rpm x86_64: dnsmasq-2.76-7.el7_6.2.x86_64.rpm dnsmasq-debuginfo-2.76-7.el7_6.2.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6): x86_64: dnsmasq-debuginfo-2.76-7.el7_6.2.x86_64.rpm dnsmasq-utils-2.76-7.el7_6.2.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 7.6): Source: dnsmasq-2.76-7.el7_6.2.src.rpm ppc64: dnsmasq-2.76-7.el7_6.2.ppc64.rpm dnsmasq-debuginfo-2.76-7.el7_6.2.ppc64.rpm ppc64le: dnsmasq-2.76-7.el7_6.2.ppc64le.rpm dnsmasq-debuginfo-2.76-7.el7_6.2.ppc64le.rpm s390x: dnsmasq-2.76-7.el7_6.2.s390x.rpm dnsmasq-debuginfo-2.76-7.el7_6.2.s390x.rpm x86_64: dnsmasq-2.76-7.el7_6.2.x86_64.rpm dnsmasq-debuginfo-2.76-7.el7_6.2.x86_64.rpm Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v.7): Source: dnsmasq-2.76-7.el7_6.2.src.rpm aarch64: dnsmasq-2.76-7.el7_6.2.aarch64.rpm dnsmasq-debuginfo-2.76-7.el7_6.2.aarch64.rpm ppc64le: dnsmasq-2.76-7.el7_6.2.ppc64le.rpm dnsmasq-debuginfo-2.76-7.el7_6.2.ppc64le.rpm s390x: dnsmasq-2.76-7.el7_6.2.s390x.rpm dnsmasq-debuginfo-2.76-7.el7_6.2.s390x.rpm Red Hat Enterprise Linux Server Optional EUS (v. 7.6): ppc64: dnsmasq-debuginfo-2.76-7.el7_6.2.ppc64.rpm dnsmasq-utils-2.76-7.el7_6.2.ppc64.rpm ppc64le: dnsmasq-debuginfo-2.76-7.el7_6.2.ppc64le.rpm dnsmasq-utils-2.76-7.el7_6.2.ppc64le.rpm s390x: dnsmasq-debuginfo-2.76-7.el7_6.2.s390x.rpm dnsmasq-utils-2.76-7.el7_6.2.s390x.rpm x86_64: dnsmasq-debuginfo-2.76-7.el7_6.2.x86_64.rpm dnsmasq-utils-2.76-7.el7_6.2.x86_64.rpm Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7): aarch64: dnsmasq-debuginfo-2.76-7.el7_6.2.aarch64.rpm dnsmasq-utils-2.76-7.el7_6.2.aarch64.rpm ppc64le: dnsmasq-debuginfo-2.76-7.el7_6.2.ppc64le.rpm dnsmasq-utils-2.76-7.el7_6.2.ppc64le.rpm s390x: dnsmasq-debuginfo-2.76-7.el7_6.2.s390x.rpm dnsmasq-utils-2.76-7.el7_6.2.s390x.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2020-25684 https://access.redhat.com/security/cve/CVE-2020-25685 https://access.redhat.com/security/cve/CVE-2020-25686 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/security/vulnerabilities/RHSB-2021-001 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2021 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPGv1 iQIVAwUBYAboDtzjgjWX9erEAQiLag//YhXcBUOW0sEQ8k06WYSM8OkrXPNB0+Uq 53L0qcvoOWtSIkwV1CgVsHuLTXRPyelw4l/I3hZED+ACfEOUzGqYJOoWnc2HT712 e6rf5x8NVQpWpGLJbePFasiZ4b9Oe2cbpeveWUnJJyJ+9A/SKsAeANvvzvFIvPah le699qONS1DpTqS5v1vU7qqN0ZcdEdC83CeRjeYOoFx1+a9izFg9eKPyr3RdsrjF ze9Dv+6ZeCorrwMa9fyEVtmT91vmOGy6/1f2/9YlI9j/tjDfhv4HdlbHL0u2Eg2z eBaAkitgzgZ46L63hm6fNmTs9cO1AW+c8STkFjcv44vz4MJEQ60K2NiOqvuhm7ba GgU0rAJD1cPnHrriJ4DytwDpgGOhoC2a637mt0onni0U6ZZmvcVIkVY1m7muCyVr Vry4ViX/LrBgw+C46NTKHIlgZm2IzVH/OkgLpvXmf+SoQqQoiI75QaeTe432X9ie Ot9z14n5OFOwcAvOwnzUUIAR3oOxQfyhby8tgN+bRsIFOmYceYkocwc7DWGJQ+Zk mInUwGaEVAPkZzmTgxTjc5BGFdb9Ojsl32g1KbLAUv4SaUZtYzwGUxh0sMwEG5eY 8JqCsJP+4BDFBd70g7KZDdUkySJ0v3gb5+PS7KqnnRtYJb81Dl6FBxNc7x9KL8cG 3tTxc1zVYbM=RW1Z -----END PGP SIGNATURE----- -- RHSA-announce mailing list
Jan 19, 2021
Red Hat
98
security advisorycritical issueRed HatRed Hat 8 RHSA-2021:0150-01 Important Dnsmasq Buffer Overflow
An update for dnsmasq is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: dnsmasq security update Advisory ID: RHSA-2021:0150-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:0150 Issue date: 2021-01-19 CVE Names: CVE-2020-25681 CVE-2020-25682 CVE-2020-25683 CVE-2020-25684 CVE-2020-25685 CVE-2020-25686 CVE-2020-25687 ==================================================================== 1. Summary: An update for dnsmasq is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64 3. Description: The dnsmasq packages contain Dnsmasq, a lightweight DNS (Domain Name Server) forwarder and DHCP (Dynamic Host Configuration Protocol) server. Security Fix(es): * dnsmasq: heap-based buffer overflow in sort_rrset() when DNSSEC is enabled (CVE-2020-25681) * dnsmasq: buffer overflow in extract_name() due to missing length check when DNSSEC is enabled (CVE-2020-25682) * dnsmasq: heap-based buffer overflow with large memcpy in get_rdata() when DNSSEC is enabled (CVE-2020-25683) * dnsmasq: loose address/port check in reply_query() makes forging replies easier for an off-path attacker (CVE-2020-25684) * dnsmasq: loose query namecheck in reply_query() makes forging replies easier for an off-path attacker (CVE-2020-25685) * dnsmasq: multiple queries forwarded for the same name makes forging replies easier for an off-path attacker (CVE-2020-25686) * dnsmasq: heap-based buffer overflow with large memcpy in sort_rrset() when DNSSEC is enabled (CVE-2020-25687) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1881875 - CVE-2020-25681 dnsmasq: heap-based buffer overflow in sort_rrset() when DNSSEC is enabled 1882014 - CVE-2020-25682 dnsmasq: buffer overflow in extract_name() due to missing length check when DNSSEC is enabled 1882018 - CVE-2020-25683 dnsmasq: heap-based buffer overflow with large memcpy in get_rdata() when DNSSEC is enabled 1889686 - CVE-2020-25684 dnsmasq: loose address/port check in reply_query() makes forging replies easier for an off-path attacker 1889688 - CVE-2020-25685 dnsmasq: loose query name check in reply_query() makes forging replies easier for an off-path attacker 1890125 - CVE-2020-25686 dnsmasq: multiple queries forwarded for the same name makes forging replies easier for an off-path attacker 1891568 - CVE-2020-25687 dnsmasq: heap-based buffer overflow with large memcpy in sort_rrset() when DNSSEC is enabled 6. Package List: Red Hat Enterprise Linux AppStream (v.8): Source: dnsmasq-2.79-13.el8_3.1.src.rpm aarch64: dnsmasq-2.79-13.el8_3.1.aarch64.rpm dnsmasq-debuginfo-2.79-13.el8_3.1.aarch64.rpm dnsmasq-debugsource-2.79-13.el8_3.1.aarch64.rpm dnsmasq-utils-2.79-13.el8_3.1.aarch64.rpm dnsmasq-utils-debuginfo-2.79-13.el8_3.1.aarch64.rpm ppc64le: dnsmasq-2.79-13.el8_3.1.ppc64le.rpm dnsmasq-debuginfo-2.79-13.el8_3.1.ppc64le.rpm dnsmasq-debugsource-2.79-13.el8_3.1.ppc64le.rpm dnsmasq-utils-2.79-13.el8_3.1.ppc64le.rpm dnsmasq-utils-debuginfo-2.79-13.el8_3.1.ppc64le.rpm s390x: dnsmasq-2.79-13.el8_3.1.s390x.rpm dnsmasq-debuginfo-2.79-13.el8_3.1.s390x.rpm dnsmasq-debugsource-2.79-13.el8_3.1.s390x.rpm dnsmasq-utils-2.79-13.el8_3.1.s390x.rpm dnsmasq-utils-debuginfo-2.79-13.el8_3.1.s390x.rpm x86_64: dnsmasq-2.79-13.el8_3.1.x86_64.rpm dnsmasq-debuginfo-2.79-13.el8_3.1.x86_64.rpm dnsmasq-debugsource-2.79-13.el8_3.1.x86_64.rpm dnsmasq-utils-2.79-13.el8_3.1.x86_64.rpm dnsmasq-utils-debuginfo-2.79-13.el8_3.1.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2020-25681 https://access.redhat.com/security/cve/CVE-2020-25682 https://access.redhat.com/security/cve/CVE-2020-25683 https://access.redhat.com/security/cve/CVE-2020-25684 https://access.redhat.com/security/cve/CVE-2020-25685 https://access.redhat.com/security/cve/CVE-2020-25686 https://access.redhat.com/security/cve/CVE-2020-25687 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/RHSB-2021-001 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2021 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPGv1 iQIVAwUBYAbejNzjgjWX9erEAQgk0A/9FxmnqHYE8Hn1es6TKcskQ21iW12qSOce x8cj5tx4AmJNfUx81W4liq2xT6cA70ruZiGuSWlnEdByKawopIRxTP3Nq/zFKwb1 XGIfAZe1xZtwBZSbbRsC+mROPzKaIAslmOzVXN2FIWAWSesNl6cmN8gBp8a3R+am tLj02/152ko3LhtPG/EjWWg4Gq4S4R72KH1di/AVdtaTIbF/CKdI5Hz5BjZa5tYt xNKXci6G0i8lHBAdTxXb1uUBRwuQuYIU2BVIga0vOkyTFJvSVpIkV55DJj+d9bPg 3zwVif2EyAWrOjHqa50olCyUoEfFxMywb64FscsbyOtJ5pXcaxG+QJtLRjL3SeUu ZlJkGctmuQnxDFeABux/qBl8st/i1v1+KQ6SG17MZ8hvuQK6E/KRw4fQR7qgczFG AbpNnIBSxKGtI2e1WQCE82PJ2ZsWoiBDKBTNtvYngFWmvRDKVIPLOsd5DZ6KFtZe BtTW4wENLzUdPRwNnDTVtKIBH6BFFVWp6aHxYD9JKE9UxPV6xCp1Zg2HQzWIoidB zLS82cgAVs6GEYeLi931IkP7bjewy2HTv1KimX5o52mdR5lsJcfqjB7fBDwS4PO8 MGZMKonmQtRX6hnqAWdoNTlt5S/Jw4Hae2QSP+YjEmF7VuwFGF8c4G3Z+bSsSVJV 8+H3Doznrqc=N5Z0 -----END PGP SIGNATURE----- -- RHSA-announce mailing list
Jan 19, 2021
•Important
Red Hat
98
security advisorynetwork securityred hat enterpriseRHEL 5: RHSA-2008:0789-01 Moderate: dnsmasq DNS Source Port Update
An updated dnsmasq package that implements UDP source-port randomization is now available for Red Hat Enterprise Linux 5. The dnsmasq DNS resolver used a fixed source UDP port. This could have made DNS spoofing attacks easier. dnsmasq has been updated to use random UDP source ports, helping to make DNS spoofing attacks harder. This update has been rated as having moderate security impact by the Red Hat Security Response Team.. ==================================================================== Red Hat Security Advisory Synopsis: Moderate: dnsmasq security update Advisory ID: RHSA-2008:0789-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2008:0789.html Issue date: 2008-08-11 CVE Names: CVE-2008-1447 ==================================================================== 1. Summary: An updated dnsmasq package that implements UDP source-port randomization is now available for Red Hat Enterprise Linux 5. This update has been rated as having moderate security impact by the Red Hat Security Response Team. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64 Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 3. Description: Dnsmasq is lightweight DNS forwarder and DHCP server. It is designed to provide DNS and, optionally, DHCP, to a small network. The dnsmasq DNS resolver used a fixed source UDP port. This could have made DNS spoofing attacks easier. dnsmasq has been updated to use random UDP source ports, helping to make DNS spoofing attacks harder. (CVE-2008-1447) All dnsmasq users are advised to upgrade to this updated package, that upgrades dnsmasq to version 2.45, which resolves this issue. 4. Solution: Before applying this update, make sure that all previously-released errata relevant to your system have been applied. This update is available via Red Hat Network. Details on how to use theRed Hat Network to apply this update are available at 5. Bugs fixed (http://bugzilla.redhat.com/): 449345 - CVE-2008-1447 implement source UDP port randomization (CERT VU#800113) 6. Package List: Red Hat Enterprise Linux Desktop (v. 5 client): Source: i386: dnsmasq-2.45-1.el5_2.1.i386.rpm dnsmasq-debuginfo-2.45-1.el5_2.1.i386.rpm x86_64: dnsmasq-2.45-1.el5_2.1.x86_64.rpm dnsmasq-debuginfo-2.45-1.el5_2.1.x86_64.rpm Red Hat Enterprise Linux (v. 5 server): Source: i386: dnsmasq-2.45-1.el5_2.1.i386.rpm dnsmasq-debuginfo-2.45-1.el5_2.1.i386.rpm ia64: dnsmasq-2.45-1.el5_2.1.ia64.rpm dnsmasq-debuginfo-2.45-1.el5_2.1.ia64.rpm ppc: dnsmasq-2.45-1.el5_2.1.ppc.rpm dnsmasq-debuginfo-2.45-1.el5_2.1.ppc.rpm s390x: dnsmasq-2.45-1.el5_2.1.s390x.rpm dnsmasq-debuginfo-2.45-1.el5_2.1.s390x.rpm x86_64: dnsmasq-2.45-1.el5_2.1.x86_64.rpm dnsmasq-debuginfo-2.45-1.el5_2.1.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key#package 7. References: https://www.cve.org/CVERecord?id=CVE-2008-1447 https://access.redhat.com/security/updates/classification#moderate https://thekelleys.org.uk/dnsmasq/CHANGELOG 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2008 Red Hat, Inc. . The update to DNS source-port randomization significantly enhances defense against spoofing attacks. Vital for users of Red Hat Enterprise Linux 5.. dnsmasq update, Red Hat Enterprise Linux, dns spoofing, network security, security patch. . LinuxSecurity.com Team
Aug 11, 2008
Red Hat
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