PT-2009-5183 · Apple · Macos X

Published 2009-11-10 · Updated 2009-11-17 · CVE-2009-2825

Positive Technologies (AI Summary)

CVSS v2.0

4.3

Medium

Base vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

Name of the Vulnerable Software and Affected Versions Mac OS X versions prior to 10.6.2

Description The issue arises from the improper handling of a '0' character in a domain name within the subject's Common Name (CN) field of an X.509 certificate. This could potentially allow man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority.

Recommendations For versions prior to 10.6.2, update to Mac OS X version 10.6.2 or later to resolve the issue. As a temporary workaround, consider restricting the acceptance of certificates with '0' characters in the domain name of the subject's Common Name field until a patch is applied.

Fix

Weakness Enumeration

CWE-310

Related Identifiers

CVE-2009-2825

Affected Products

Macos X

References · 5

• http://support.apple.com/kb/HT3937 · Vendor Advisory
• http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2009-2825 · Security Note
• http://securityfocus.com/bid/36956 · Patch
• http://vupen.com/english/advisories/2009/3184 · Note