Out-of-bounds write in LibreSSL
Priority MEDIUM 48CWE-787Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
Off-by-one error in the OBJ_obj2txt function in LibreSSL before 2.3.1 allows remote attackers to cause a denial of service (program crash) or possible execute arbitrary code via a crafted X.509 certificate, which triggers a stack-based buffer overflow. Note: this vulnerability exists because of an incorrect fix for CVE-2014-3508.
Why it matters now
EPSS 0.03489 89th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Fixed LibreSSL (LibreSSL): 2.3.1
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 |
|---|---|---|---|---|---|
| LibreSSL | LibreSSL | before 2.3.1 | 2.3.1 | Patch available | CNA |
- LibreSSL VendorLibreSSL Affected before 2.3.1 Fixed in 2.3.1 Patch available CNA
Remediation
- Fix · CNA LibreSSL (LibreSSL) Fixed in 2.3.1
Timeline
- 2026-10-02 Threatist record created from CVE-2015-5334
- 2026-10-03 Alias added: GHSA-6q9j-c3rh-x87m
References
Sources
- CVE-2015-5334 · CVE Program
- CVE-2015-5334 · NVD
- FIRST EPSS
- GHSA-6q9j-c3rh-x87m · GitHub Advisory Database · CC BY 4.0
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