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RHSA-2010:0029: krb5 security update

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RHSA-2010:0029: krb5 security update

Severity
10
CVSS
(AV:N/AC:L/Au:N/C:C/I:C/A:C)
Published
01/13/2010
Created
07/25/2018
Added
01/27/2010
Modified
07/04/2017

Description

Kerberos is a network authentication system which allows clients andservers to authenticate to each other using symmetric encryption and atrusted third party, the Key Distribution Center (KDC).Multiple integer underflow flaws, leading to heap-based corruption, werefound in the way the MIT Kerberos Key Distribution Center (KDC) decryptedciphertexts encrypted with the Advanced Encryption Standard (AES) andARCFOUR (RC4) encryption algorithms. If a remote KDC client were able toprovide a specially-crafted AES- or RC4-encrypted ciphertext or texts, itcould potentially lead to either a denial of service of the central KDC(KDC crash or abort upon processing the crafted ciphertext), or arbitrarycode execution with the privileges of the KDC (i.e., root privileges).(CVE-2009-4212)All krb5 users should upgrade to these updated packages, which contain abackported patch to correct these issues. All running services using theMIT Kerberos libraries must be restarted for the update to take effect.

Solution(s)

  • redhat-upgrade-krb5-devel
  • redhat-upgrade-krb5-libs
  • redhat-upgrade-krb5-server
  • redhat-upgrade-krb5-workstation

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