CVE-2009-2730 Security feature bypass in n/a
Man-in-the-middle attackers can spoof SSL servers by exploiting null byte handling in X.509 certificate domain names within the GnuTLS library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2009-2730?
CVE-2009-2730 is a high-severity vulnerability in Gnu Gnutls, published on 12 Aug 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
libgnutls in GnuTLS before 2.8.2 does not properly handle a '\0' character in a domain name in the subject's (1) Common Name (CN) or (2) Subject Alternative Name (SAN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority.
Weakness: CWE-310
Which versions are affected by CVE-2009-2730?
It affects 1 product.
Linux distribution packages (22)
gnutls Red Hat:enterprise_linux:4::as | All versions | 0:1.0.20-4.el4_8.3 |
gnutls-debuginfo Red Hat:enterprise_linux:4::as | All versions | 0:1.0.20-4.el4_8.3 |
gnutls-devel Red Hat:enterprise_linux:4::as | All versions | 0:1.0.20-4.el4_8.3 |
gnutls Red Hat:enterprise_linux:4::desktop | All versions | 0:1.0.20-4.el4_8.3 |
gnutls-debuginfo Red Hat:enterprise_linux:4::desktop | All versions | 0:1.0.20-4.el4_8.3 |
gnutls-devel Red Hat:enterprise_linux:4::desktop | All versions | 0:1.0.20-4.el4_8.3 |
gnutls Red Hat:enterprise_linux:4::es | All versions | 0:1.0.20-4.el4_8.3 |
gnutls-debuginfo Red Hat:enterprise_linux:4::es | All versions | 0:1.0.20-4.el4_8.3 |
gnutls-devel Red Hat:enterprise_linux:4::es | All versions | 0:1.0.20-4.el4_8.3 |
gnutls Red Hat:enterprise_linux:4::ws | All versions | 0:1.0.20-4.el4_8.3 |
gnutls-debuginfo Red Hat:enterprise_linux:4::ws | All versions | 0:1.0.20-4.el4_8.3 |
gnutls-devel Red Hat:enterprise_linux:4::ws | All versions | 0:1.0.20-4.el4_8.3 |
gnutls Red Hat:enterprise_linux:5::client | All versions | 0:1.4.1-3.el5_3.5 |
gnutls-debuginfo Red Hat:enterprise_linux:5::client | All versions | 0:1.4.1-3.el5_3.5 |
gnutls-utils Red Hat:enterprise_linux:5::client | All versions | 0:1.4.1-3.el5_3.5 |
gnutls Red Hat:enterprise_linux:5::client_workstation | All versions | 0:1.4.1-3.el5_3.5 |
gnutls-debuginfo Red Hat:enterprise_linux:5::client_workstation | All versions | 0:1.4.1-3.el5_3.5 |
gnutls-devel Red Hat:enterprise_linux:5::client_workstation | All versions | 0:1.4.1-3.el5_3.5 |
gnutls Red Hat:enterprise_linux:5::server | All versions | 0:1.4.1-3.el5_3.5 |
gnutls-debuginfo Red Hat:enterprise_linux:5::server | All versions | 0:1.4.1-3.el5_3.5 |
gnutls-devel Red Hat:enterprise_linux:5::server | All versions | 0:1.4.1-3.el5_3.5 |
gnutls-utils Red Hat:enterprise_linux:5::server | All versions | 0:1.4.1-3.el5_3.5 |
Products include Gnu Gnutls.
How do I fix CVE-2009-2730?
Upgrade to a fixed version.
Is CVE-2009-2730 being exploited?
There is no known exploitation of CVE-2009-2730 in the wild and no public exploit code.
Other vulnerabilities in Gnu Gnutls
Sources
Also known as GHSA-x6gw-c9hx-x25f, RHSA-2009:1232.