Double free vulnerability in GnuTLS before 3.3.17 and 3.4.x before 3.4.4 allows remote…
Priority MEDIUM 41Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
EPSS 0.19178 97th percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 23
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gnu:gnutls:3.3.0:-:*:*:*:*:*:* | 3.3.0 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.3.0:pre0:*:*:*:*:*:* | 3.3.0 pre0 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.3.1:*:*:*:*:*:*:* | 3.3.1 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.3.2:*:*:*:*:*:*:* | 3.3.2 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.3.3:*:*:*:*:*:*:* | 3.3.3 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.3.4:*:*:*:*:*:*:* | 3.3.4 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.3.5:*:*:*:*:*:*:* | 3.3.5 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.3.6:*:*:*:*:*:*:* | 3.3.6 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.3.7:*:*:*:*:*:*:* | 3.3.7 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.3.8:*:*:*:*:*:*:* | 3.3.8 | Vulnerable | GNU |
- cpe:2.3:a:gnu:gnutls:3.3.0:-:*:*:*:*:*:* Versions 3.3.0 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.3.0:pre0:*:*:*:*:*:* Versions 3.3.0 pre0 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.3.1:*:*:*:*:*:*:* Versions 3.3.1 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.3.2:*:*:*:*:*:*:* Versions 3.3.2 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.3.3:*:*:*:*:*:*:* Versions 3.3.3 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.3.4:*:*:*:*:*:*:* Versions 3.3.4 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.3.5:*:*:*:*:*:*:* Versions 3.3.5 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.3.6:*:*:*:*:*:*:* Versions 3.3.6 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.3.7:*:*:*:*:*:*:* Versions 3.3.7 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.3.8:*:*:*:*:*:*:* Versions 3.3.8 Vulnerable ·GNU
Show 13 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gnu:gnutls:3.3.9:*:*:*:*:*:*:* | 3.3.9 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.3.10:*:*:*:*:*:*:* | 3.3.10 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.3.11:*:*:*:*:*:*:* | 3.3.11 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.3.12:*:*:*:*:*:*:* | 3.3.12 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.3.13:*:*:*:*:*:*:* | 3.3.13 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.3.14:*:*:*:*:*:*:* | 3.3.14 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.3.15:*:*:*:*:*:*:* | 3.3.15 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.3.16:*:*:*:*:*:*:* | 3.3.16 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.4.0:*:*:*:*:*:*:* | 3.4.0 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.4.1:*:*:*:*:*:*:* | 3.4.1 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.4.2:*:*:*:*:*:*:* | 3.4.2 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:3.4.3:*:*:*:*:*:*:* | 3.4.3 | Vulnerable | GNU |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
- cpe:2.3:a:gnu:gnutls:3.3.9:*:*:*:*:*:*:* Versions 3.3.9 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.3.10:*:*:*:*:*:*:* Versions 3.3.10 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.3.11:*:*:*:*:*:*:* Versions 3.3.11 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.3.12:*:*:*:*:*:*:* Versions 3.3.12 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.3.13:*:*:*:*:*:*:* Versions 3.3.13 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.3.14:*:*:*:*:*:*:* Versions 3.3.14 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.3.15:*:*:*:*:*:*:* Versions 3.3.15 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.3.16:*:*:*:*:*:*:* Versions 3.3.16 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.4.0:*:*:*:*:*:*:* Versions 3.4.0 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.4.1:*:*:*:*:*:*:* Versions 3.4.1 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.4.2:*:*:*:*:*:*:* Versions 3.4.2 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:3.4.3:*:*:*:*:*:*:* Versions 3.4.3 Vulnerable ·GNU
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
Not affected: 2 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2015-6251
- 2026-10-03 Alias added: GHSA-63p6-5792-gpfq
References
Advisory 4
Other 4
- https://bugzilla.redhat.com/show_bug.cgi?id=1251902
- [oss-security] 20150810 CVE request: GNUTLS-SA-2015-3 double free in certificate DN decoding
- https://gitlab.com/gnutls/gnutls/commit/272854367efc130fbd4f1a51840d80c630214e12
- [oss-security] 20150817 Re: CVE request: GNUTLS-SA-2015-3 double free in certificate DN decoding
Sources
- CVE-2015-6251 · CVE Program
- CVE-2015-6251 · NVD
- FIRST EPSS
- GHSA-63p6-5792-gpfq · GitHub Advisory Database · CC BY 4.0
- CVE-2015-6251 · Red Hat security data · CC BY 4.0
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