Description
GnuTLS incorrectly validates the first byte of padding in CBC modes
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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | gnutls26 | 2.12.20-8+deb7u4 | DSA-3408-1 |
| Debian 6.0 | gnutls26 | 2.8.6-1+squeeze6 | DLA-364-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | gnutls26 | 2.12.23-12ubuntu2.3 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 11 SP4 | gnutls | 2.4.1-24.39.60.1 | SUSE-SU-2016:0077-1 |
| SLES 11 SP3 | gnutls | 2.4.1-24.39.60.1 | SUSE-SU-2016:0077-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 11 SP4 | gnutls | 2.4.1-24.39.60.1 | SUSE-SU-2016:0077-1 |
| SLES for SAP 11 SP3 | gnutls | 2.4.1-24.39.60.1 | SUSE-SU-2016:0077-1 |
Advisories 3
- DSA-3408-1 gnutls26 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-364-1 gnutls26 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2016:0077-1 Security update for gnutls SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://security-tracker.debian.org/tracker/CVE-2015-8313
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2015-8313
- https://bugzilla.suse.com/show_bug.cgi?id=CVE-2015-8313
- http://www.securityfocus.com/bid/78327
- http://www.debian.org/security/2015/dsa-3408
- http://www.securityfocus.com/archive/1/537012/100/0/threaded
- https://blog.hboeck.de/archives/877-A-little-POODLE-left-in-GnuTLS-old-versions.html