Description
Buffer overflow in the gnutls_session_get_data function in lib/gnutls_session.c in GnuTLS 2.12.x before 2.12.14 and 3.x before 3.0.7, when used on a client that performs nonstandard session resumption, allows remote TLS servers to cause a denial of service (application crash) via a large SessionTicket.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | gnutls +3 | 2.8.5-4.el6_2.2 | RHSA-2012:0429 |
| RHEL 5 | gnutls +2 | 1.4.1-7.el5_8.2 | RHSA-2012:0428 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | gnutls | 3.4.15-1.1 | openSUSE-SU-2024:10105-1 |
Advisories 3
- RHSA-2012:0429 Red Hat Security Advisory: gnutls security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2012:0428 Red Hat Security Advisory: gnutls security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- openSUSE-SU-2024:10105-1 gnutls-3.4.15-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- USN-1418-1 vendor-advisory
- RHSA-2012:0531 vendor-advisory
- http://git.savannah.gnu.org/gitweb/?p=gnutls.git%3Ba=commitdiff%3Bh=e82ef4545e9e98cbcb032f55d7c750b81e3a0450
- [oss-security] 20111108 CVE request: gnutls possible DoS (GNUTLS-SA-2011-2) mailing-list
- 48712 third-party-advisory
- http://www.gnu.org/software/gnutls/security.html
- FEDORA-2012-4569 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=752308
- RHSA-2012:0488 vendor-advisory
- 48596 third-party-advisory
- http://git.savannah.gnu.org/gitweb/?p=gnutls.git%3Ba=commitdiff%3Bh=190cef6eed37d0e73a73c1e205eb31d45ab60a3c
- MDVSA-2012:045 vendor-advisory
- [gnutls-devel] 20111108 Possible buffer overflow on gnutls_session_get_data mailing-list
- [oss-security] 20111109 Re: CVE request: gnutls possible DoS (GNUTLS-SA-2011-2) mailing-list
- RHSA-2012:0429 vendor-advisory