gnutls: double free flaw in certificate DN decoding (GNUTLS-SA-2015-3)
Published Aug 24, 2015
5.0
MEDIUMCVSS 2.0
EPSS 19.03%
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.
Affected products
No data.
Configuration 1
- 3.3.0
- 3.3.0
- 3.3.1
- 3.3.2
- 3.3.3
- 3.3.4
- 3.3.5
- 3.3.6
- 3.3.7
- 3.3.8
- 3.3.9
- 3.3.10
- 3.3.11
- 3.3.12
- 3.3.13
- 3.3.14
- 3.3.15
- 3.3.16
- 3.4.0
- 3.4.1
- 3.4.2
- 3.4.3
Configuration 2
- 8.0
No data.
Red Hat Enterprise Linux 5
gnutls
Not affected
Red Hat Enterprise Linux 6
gnutls
Not affected
Red Hat Enterprise Linux 7
gnutls
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | gnutls | Not affected | n/a |
| Red Hat Enterprise Linux 6 | gnutls | Not affected | n/a |
| Red Hat Enterprise Linux 7 | gnutls | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of gnutls as shipped with Red Hat Enterprise Linux 4, 5, and 6.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 19.03% (0.19030) | 97.23th | v5 (v2026.06.15) |
| Jun 15, 2026 | 19.03% (0.19030) | 96.94th | v5 (v2026.06.15) |
| Mar 30, 2025 | 6.69% (0.06692) | 90.33th | v4 (v2025.03.14) |
| Mar 29, 2025 | 8.50% (0.08498) | 87.06th | v4 (v2025.03.14) |
| Mar 17, 2025 | 6.69% (0.06692) | 90.55th | v4 (v2025.03.14) |
| Dec 12, 2024 | 18.69% (0.18690) | 96.41th | v3 (v2023.03.01) |
| Mar 7, 2023 | 18.69% (0.18690) | 95.37th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
References (13)
- http://lists.fedoraproject.org/pipermail/package-announce/2015-September/165286.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-updates/2015-09/msg00001.html vendor-advisoryx_refsource_SUSE
- http://www.debian.org/security/2015/dsa-3334 vendor-advisoryx_refsource_DEBIAN
- http://www.gnutls.org/security.html#GNUTLS-SA-2015-3 x_refsource_CONFIRMVendor Advisory
- http://www.openwall.com/lists/oss-security/2015/08/10/1 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2015/08/17/6 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/76267 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1033226 vdb-entryx_refsource_SECTRACK
- https://access.redhat.com/security/cve/CVE-2015-6251 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1251902 x_refsource_CONFIRMIssue Tracking
- https://gitlab.com/gnutls/gnutls/commit/272854367efc130fbd4f1a51840d80c630214e12 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2015-6251
- https://www.cve.org/CVERecord?id=CVE-2015-6251
Change history (0)
No recorded changes yet.