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  • [SECURITY] [DSA 4944-1] krb5 security update

    From Salvatore Bonaccorso@21:1/5 to All on Sun Jul 25 09:30:01 2021
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    - ------------------------------------------------------------------------- Debian Security Advisory DSA-4944-1 security@debian.org https://www.debian.org/security/ Salvatore Bonaccorso
    July 25, 2021 https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package : krb5
    CVE ID : CVE-2021-36222
    Debian Bug : 991365

    It was discovered that the Key Distribution Center (KDC) in krb5, the
    MIT implementation of Kerberos, is prone to a NULL pointer dereference
    flaw. An unauthenticated attacker can take advantage of this flaw to
    cause a denial of service (KDC crash) by sending a request containing a PA-ENCRYPTED-CHALLENGE padata element without using FAST.

    For the stable distribution (buster), this problem has been fixed in
    version 1.17-3+deb10u2.

    We recommend that you upgrade your krb5 packages.

    For the detailed security status of krb5 please refer to its security
    tracker page at:
    https://security-tracker.debian.org/tracker/krb5

    Further information about Debian Security Advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org
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