Stack-based buffer overflow in the MHD_digest_auth_check function in libmicrohttpd before…
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
- Partial · Partial · Partial
- 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
Stack-based buffer overflow in the MHD_digest_auth_check function in libmicrohttpd before 0.9.32, when MHD_OPTION_CONNECTION_MEMORY_LIMIT is set to a large value, allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a long URI in an authentication header.
Why it matters now
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 · 16
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gnu:libmicrohttpd:*:*:*:*:*:*:*:* | up to 0.9.31 | Vulnerable | GNU |
| cpe:2.3:a:gnu:libmicrohttpd:0.9.16:*:*:*:*:*:*:* | 0.9.16 | Vulnerable | GNU |
| cpe:2.3:a:gnu:libmicrohttpd:0.9.17:*:*:*:*:*:*:* | 0.9.17 | Vulnerable | GNU |
| cpe:2.3:a:gnu:libmicrohttpd:0.9.18:*:*:*:*:*:*:* | 0.9.18 | Vulnerable | GNU |
| cpe:2.3:a:gnu:libmicrohttpd:0.9.19:*:*:*:*:*:*:* | 0.9.19 | Vulnerable | GNU |
| cpe:2.3:a:gnu:libmicrohttpd:0.9.20:*:*:*:*:*:*:* | 0.9.20 | Vulnerable | GNU |
| cpe:2.3:a:gnu:libmicrohttpd:0.9.21:*:*:*:*:*:*:* | 0.9.21 | Vulnerable | GNU |
| cpe:2.3:a:gnu:libmicrohttpd:0.9.22:*:*:*:*:*:*:* | 0.9.22 | Vulnerable | GNU |
| cpe:2.3:a:gnu:libmicrohttpd:0.9.23:*:*:*:*:*:*:* | 0.9.23 | Vulnerable | GNU |
| cpe:2.3:a:gnu:libmicrohttpd:0.9.24:*:*:*:*:*:*:* | 0.9.24 | Vulnerable | GNU |
- cpe:2.3:a:gnu:libmicrohttpd:*:*:*:*:*:*:*:* Versions up to 0.9.31 Vulnerable ·GNU
- cpe:2.3:a:gnu:libmicrohttpd:0.9.16:*:*:*:*:*:*:* Versions 0.9.16 Vulnerable ·GNU
- cpe:2.3:a:gnu:libmicrohttpd:0.9.17:*:*:*:*:*:*:* Versions 0.9.17 Vulnerable ·GNU
- cpe:2.3:a:gnu:libmicrohttpd:0.9.18:*:*:*:*:*:*:* Versions 0.9.18 Vulnerable ·GNU
- cpe:2.3:a:gnu:libmicrohttpd:0.9.19:*:*:*:*:*:*:* Versions 0.9.19 Vulnerable ·GNU
- cpe:2.3:a:gnu:libmicrohttpd:0.9.20:*:*:*:*:*:*:* Versions 0.9.20 Vulnerable ·GNU
- cpe:2.3:a:gnu:libmicrohttpd:0.9.21:*:*:*:*:*:*:* Versions 0.9.21 Vulnerable ·GNU
- cpe:2.3:a:gnu:libmicrohttpd:0.9.22:*:*:*:*:*:*:* Versions 0.9.22 Vulnerable ·GNU
- cpe:2.3:a:gnu:libmicrohttpd:0.9.23:*:*:*:*:*:*:* Versions 0.9.23 Vulnerable ·GNU
- cpe:2.3:a:gnu:libmicrohttpd:0.9.24:*:*:*:*:*:*:* Versions 0.9.24 Vulnerable ·GNU
Show 6 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gnu:libmicrohttpd:0.9.25:*:*:*:*:*:*:* | 0.9.25 | Vulnerable | GNU |
| cpe:2.3:a:gnu:libmicrohttpd:0.9.26:*:*:*:*:*:*:* | 0.9.26 | Vulnerable | GNU |
| cpe:2.3:a:gnu:libmicrohttpd:0.9.27:*:*:*:*:*:*:* | 0.9.27 | Vulnerable | GNU |
| cpe:2.3:a:gnu:libmicrohttpd:0.9.28:*:*:*:*:*:*:* | 0.9.28 | Vulnerable | GNU |
| cpe:2.3:a:gnu:libmicrohttpd:0.9.29:*:*:*:*:*:*:* | 0.9.29 | Vulnerable | GNU |
| cpe:2.3:a:gnu:libmicrohttpd:0.9.30:*:*:*:*:*:*:* | 0.9.30 | Vulnerable | GNU |
- cpe:2.3:a:gnu:libmicrohttpd:0.9.25:*:*:*:*:*:*:* Versions 0.9.25 Vulnerable ·GNU
- cpe:2.3:a:gnu:libmicrohttpd:0.9.26:*:*:*:*:*:*:* Versions 0.9.26 Vulnerable ·GNU
- cpe:2.3:a:gnu:libmicrohttpd:0.9.27:*:*:*:*:*:*:* Versions 0.9.27 Vulnerable ·GNU
- cpe:2.3:a:gnu:libmicrohttpd:0.9.28:*:*:*:*:*:*:* Versions 0.9.28 Vulnerable ·GNU
- cpe:2.3:a:gnu:libmicrohttpd:0.9.29:*:*:*:*:*:*:* Versions 0.9.29 Vulnerable ·GNU
- cpe:2.3:a:gnu:libmicrohttpd:0.9.30:*:*:*:*:*:*:* Versions 0.9.30 Vulnerable ·GNU
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 1 product
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2013-7039
- 2026-10-03 Alias added: GHSA-xjww-5jpx-q2w4
References
More GNU Libmicrohttpd vulnerabilities
- TI-2021-02429 Buffer overflow in libmicrohttpd CVSS 3.1CRITICAL 9.8
- TI-2025-38881 Heap-based buffer overflow in GNU libbmicrohttpd CVSS 4.0HIGH 8.7
- TI-2025-37229 NULL pointer dereference in GNU libbmicrohttpd CVSS 4.0HIGH 8.7
- TI-2013-05783 The MHD_http_unescape function in libmicrohttpd before 0.9.32 might allow remote… CVSS 2.0MEDIUM 6.4
- TI-2023-12106 GNU libmicrohttpd before 0.9.76 allows remote DoS (Denial of Service) due to improper… CVSS 3.1MEDIUM 5.9
Sources
- CVE-2013-7039 · CVE Program
- CVE-2013-7039 · NVD
- FIRST EPSS
- GHSA-xjww-5jpx-q2w4 · GitHub Advisory Database · CC BY 4.0
- CVE-2013-7039 · Red Hat security data · CC BY 4.0
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