PT-2009-4881 · Gnutls+2 · Gnutls+2

Joe Orton · Published 2009-08-21 · Updated 2020-05-22 · CVE-2009-2474

Positive Technologies (AI Summary)

CVSS v2.0

5.8

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions neon versions prior to 0.28.6

Description The issue arises from improper handling of a '0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate when OpenSSL or GnuTLS is used. This allows 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 0.28.6, update to version 0.28.6 or later to resolve the issue. As a temporary workaround, consider restricting the use of SSL servers with certificates containing a '0' character in the domain name until a patch is available.

Fix

Inadequate Encryption Strength

Weakness Enumeration

CWE-326

Related Identifiers

CVE-2009-2474

OPENSUSE-SU-2024:10496-1

RHSA-2009:1452

RHSA-2009_1452

Affected Products

Gnutls

Openssl

Red Hat

References · 21

• https://redhat.com/archives/fedora-package-announce/2009-August/msg00945.html · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2009-2474 · Vendor Advisory
• https://redhat.com/archives/fedora-package-announce/2009-August/msg00924.html · Vendor Advisory
• http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2009-2474 · Security Note
• http://ubuntu.com/usn/usn-835-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2009-2474 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2009-2474 · Vendor Advisory
• http://mandriva.com/security/advisories?name=MDVSA-2009:221 · Vendor Advisory
• https://access.redhat.com/security/cve/CVE-2009-2474 · Note
• http://secunia.com/advisories/36799 · Note
• http://lists.manyfish.co.uk/pipermail/neon/2009-August/001046.html · Note
• https://access.redhat.com/errata/RHSA-2009:1452 · Note
• http://secunia.com/advisories/36371 · Note
• http://vupen.com/english/advisories/2009/2341 · Note