CVE-2015-6251
gnutls: double free flaw in certificate DN decoding (GNUTLS-SA-2015-3)
Severity
ModerateRed Hat Product Security
CVSS 2.0
Review impact separately from score.
Published · August 10, 2015
Updated · November 21, 2025
Description
A use-after-free flaw was found in GnuTLS's _gnutls_x509_dn_to_string() function. A remote attacker could create a specially crafted certificate with very long DistinguishedName (DN) entries that, when processed by an application compiled against GnuTLS, could cause that application to crash.
Statement
This issue did not affect the versions of gnutls as shipped with Red Hat Enterprise Linux 4, 5, and 6.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 2.0 · 4.3AV:N/AC:M/Au:N/C:N/I:N/A:P
CWE-416 · Use After Free