Buffer overflow in the dane_query_tlsa function in the DANE library (libdane) in GnuTLS 3.1.x before 3.1.15 and 3.2.x before 3.2.5 allows remote servers to cause a denial of service (memory corruption) via a response with more than four DANE entries.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2013-4466 from the MITRE CVE dictionary dictionary and NIST NVD.
Not vulnerable. This issue did not affect the versions of gnutls as shipped with Red Hat Enterprise Linux 5 and 6 as they did not include support for DANE protocol.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
| Base Score | 6.8 |
|---|---|
| Base Metrics | AV:N/AC:M/Au:N/C:P/I:P/A:P |
| Access Vector | Network |
| Access Complexity | Medium |
| Authentication | None |
| Confidentiality Impact | Partial |
| Integrity Impact | Partial |
| Availability Impact | Partial |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | gnutls | Not affected |
| Red Hat Enterprise Linux 6 | gnutls | Not affected |
| Red Hat Enterprise Linux 6 | mingw32-gnutls | Not affected |
| Red Hat Enterprise Linux 5 | gnutls | Not affected |
Vulmon