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it-securitynotifies - [IT-SecNots] [SECURITY] [DSA 4944-1] krb5 security update

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[IT-SecNots] [SECURITY] [DSA 4944-1] krb5 security update


Chronologisch Thread 
  • From: Salvatore Bonaccorso <carnil AT debian.org>
  • To: debian-security-announce AT lists.debian.org
  • Subject: [IT-SecNots] [SECURITY] [DSA 4944-1] krb5 security update
  • Date: Sun, 25 Jul 2021 07:27:47 +0000
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

- -------------------------------------------------------------------------
Debian Security Advisory DSA-4944-1 security AT 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 AT lists.debian.org
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  • [IT-SecNots] [SECURITY] [DSA 4944-1] krb5 security update, Salvatore Bonaccorso, 25.07.2021

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