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AUSCERT External Security Bulletin Redistribution
[SECURITY] [DLA 1643-1] krb5 security update
29 January 2019
AusCERT Security Bulletin Summary
Operating System: Debian GNU/Linux 8
Impact/Access: Denial of Service -- Existing Account
Unauthorised Access -- Existing Account
CVE Names: CVE-2018-20217 CVE-2018-5730 CVE-2018-5729
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Package : krb5
Version : 1.12.1+dfsg-19+deb8u5
CVE ID : CVE-2018-5729 CVE-2018-5730 CVE-2018-20217
krb5, a MIT Kerberos implementation, had several flaws in LDAP DN
checking, which could be used to circumvent a DN containership check by
supplying special parameters to some calls.
Further an attacker could crash the KDC by making S4U2Self requests.
For Debian 8 "Jessie",
these problems have been fixed in version 1.12.1+dfsg-19+deb8u5.
We recommend that you upgrade your krb5 packages.
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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