Use-after-free vulnerability in the _gnutls_handshake_hash_buffers_clear function in…
Priority MEDIUM 42CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- High
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Complete · Complete · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
Use-after-free vulnerability in the _gnutls_handshake_hash_buffers_clear function in lib/gnutls_handshake.c in libgnutls in GnuTLS 2.3.5 through 2.4.0 allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via TLS transmission of data that is improperly used when the peer calls gnutls_handshake within a normal session, leading to attempted access to a deallocated libgcrypt handle.
Why it matters now
EPSS 0.05457 92nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
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 · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gnu:gnutls:2.3.5:*:*:*:*:*:*:* | 2.3.5 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:2.3.6:*:*:*:*:*:*:* | 2.3.6 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:2.3.7:*:*:*:*:*:*:* | 2.3.7 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:2.3.8:*:*:*:*:*:*:* | 2.3.8 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:2.3.9:*:*:*:*:*:*:* | 2.3.9 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gnutls:2.4.0:*:*:*:*:*:*:* | 2.4.0 | Vulnerable | GNU |
- cpe:2.3:a:gnu:gnutls:2.3.5:*:*:*:*:*:*:* Versions 2.3.5 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:2.3.6:*:*:*:*:*:*:* Versions 2.3.6 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:2.3.7:*:*:*:*:*:*:* Versions 2.3.7 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:2.3.8:*:*:*:*:*:*:* Versions 2.3.8 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:2.3.9:*:*:*:*:*:*:* Versions 2.3.9 Vulnerable ·GNU
- cpe:2.3:a:gnu:gnutls:2.4.0:*:*:*:*:*:*:* Versions 2.4.0 Vulnerable ·GNU
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2008-2377
- 2026-10-03 Alias added: GHSA-9h4r-gpqc-r78x
References
More Gnutls vulnerabilities
- TI-2009-03392 The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft… CVSS 3.1CRITICAL 9.8
- TI-2026-03321 Gnutls: gnutls: policy bypass due to case-sensitive nameconstraints comparison CVSS 3.1HIGH 7.4
- TI-2024-00525 Gnutls: rejects certificate chain with distributed trust CVSS 3.1HIGH 7.5
- TI-2023-00345 Observable discrepancy in gnutls CVSS 3.1HIGH 7.4
- TI-2019-02841 Use after free in gnutls CVSS 3.0HIGH 7.5
- TI-2017-03378 Double free vulnerability in the gnutls_x509_ext_import_proxy function in GnuTLS before… CVSS 3.0CRITICAL 9.8
Sources
- CVE-2008-2377 · CVE Program
- CVE-2008-2377 · NVD
- FIRST EPSS
- GHSA-9h4r-gpqc-r78x · GitHub Advisory Database · CC BY 4.0
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