Rapid7 Vulnerability & Exploit Database

RHSA-2011:0262: sendmail security and bug fix update

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RHSA-2011:0262: sendmail security and bug fix update

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
01/04/2010
Created
07/25/2018
Added
02/24/2011
Modified
07/04/2017

Description

Sendmail is a Mail Transport Agent (MTA) used to send mail betweenmachines.A flaw was found in the way sendmail handled NUL characters in theCommonName field of X.509 certificates. An attacker able to get acarefully-crafted certificate signed by a trusted Certificate Authoritycould trick sendmail into accepting it by mistake, allowing the attacker toperform a man-in-the-middle attack or bypass intended client certificateauthentication. (CVE-2009-4565) The CVE-2009-4565 issue only affected configurations using TLS withcertificate verification and CommonName checking enabled, which is not atypical configuration.This update also fixes the following bugs:All sendmail users should upgrade to these updated packages, which containbackported patches to correct these issues. After installing this update,sendmail will be restarted automatically.

Solution(s)

  • redhat-upgrade-sendmail
  • redhat-upgrade-sendmail-cf
  • redhat-upgrade-sendmail-devel
  • redhat-upgrade-sendmail-doc

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