Description

chan_sip.c in Asterisk Open Source 1.8.x before 1.8.8.2 and 10.x before 10.0.1, when the res_srtp module is used and media support is improperly configured, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted SDP message with a crypto attribute and a (1) video or (2) text media type, as demonstrated by CSipSimple.

Affected Products 59

References 8

• downloads.asterisk.org http://downloads.asterisk.org/pub/security/AST-2012-001-1.8.diff
  Patch
• downloads.asterisk.org http://downloads.asterisk.org/pub/security/AST-2012-001-10.diff
  Patch
• downloads.asterisk.org http://downloads.asterisk.org/pub/security/AST-2012-001.html
  Vendor Advisory
• openwall.com http://www.openwall.com/lists/oss-security/2012/01/20/16
• openwall.com http://www.openwall.com/lists/oss-security/2012/01/20/18
• bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=783487
• issues.asterisk.org https://issues.asterisk.org/jira/browse/ASTERISK-19202
• issues.asterisk.org https://issues.asterisk.org/jira/secure/attachment/42202/issueA19202_crypto_if_uninited_text_or_video.patch
  Exploit

Remediation

• downloads.asterisk.org http://downloads.asterisk.org/pub/security/AST-2012-001-1.8.diff
  Patch
• downloads.asterisk.org http://downloads.asterisk.org/pub/security/AST-2012-001-10.diff
  Patch