| Name | CVE-2015-6251 |
| Description | Double free vulnerability in GnuTLS before 3.3.17 and 3.4.x before 3.4.4 allows remote attackers to cause a denial of service via a long DistinguishedName (DN) entry in a certificate. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| References | DSA-3334-1 |
| NVD severity | medium (attack range: remote) |
| Debian Bugs | 795068 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| gnutls28 (PTS) | jessie | 3.3.8-6+deb8u7 | fixed |
| jessie (security) | 3.3.8-6+deb8u6 | fixed | |
| stretch | 3.5.8-5+deb9u3 | fixed | |
| stretch (security) | 3.5.8-5+deb9u1 | fixed | |
| buster, sid | 3.5.19-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| gnutls26 | source | (unstable) | (not affected) | |||
| gnutls28 | source | (unstable) | 3.3.17-1 | medium | 795068 | |
| gnutls28 | source | jessie | 3.3.8-6+deb8u2 | medium | DSA-3334-1 |
- gnutls26 <not-affected> (Vulnerable code not present)
http://www.openwall.com/lists/oss-security/2015/08/10/1
https://gitlab.com/gnutls/gnutls/commit/272854367efc130fbd4f1a51840d80c630214e12
http://www.gnutls.org/security.html#GNUTLS-SA-2015-3
_gnutls_x509_dn_to_string() introduced in 3.1.10 via:
https://gitlab.com/gnutls/gnutls/commit/6be35136333b5d6289f23209cf896e741462909a