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openSUSE: 2019:1888-1 Moderate: libheimdal KDC Issues and Fixes

opensuse
Calendar Grey August 14, 2019
Dist Opensuse Esm H88
A recent upgrade for libheimdal in openSUSE addresses two critical security flaws that require prompt action.
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:

...

Read the Full Advisory

Patch

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-SP1:

zypper in -t patch openSUSE-2019-1888=1

Package List

- openSUSE Backports SLE-15-SP1 (aarch64 ppc64le s390x x86_64):

libheimdal-7.7.0-bp151.4.3.1

libheimdal-devel-7.7.0-bp151.4.3.1

References

https://www.suse.com/security/cve/CVE-2018-16860.html

https://www.suse.com/security/cve/CVE-2019-12098.html

https://bugzilla.suse.com/1047218

https://bugzilla.suse.com/1084909

--

Announcement ID: openSUSE-SU-2019:1888-1
Rating: moderate
Affected Products: openSUSE Backports SLE-15-SP1

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