The x509parse_crt function in x509.h in PolarSSL 1.1.x before 1.1.7 and 1.2.x before…
Priority LOW 24CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
The x509parse_crt function in x509.h in PolarSSL 1.1.x before 1.1.7 and 1.2.x before 1.2.8 does not properly parse certificate messages during the SSL/TLS handshake, which allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a certificate message that contains a PEM encoded certificate.
Why it matters now
EPSS 0.01887 79th 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 · 17
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:polarssl:polarssl:1.1.0:*:*:*:*:*:*:* | 1.1.0 | Vulnerable | polarssl |
| cpe:2.3:a:polarssl:polarssl:1.1.0:rc0:*:*:*:*:*:* | 1.1.0 rc0 | Vulnerable | polarssl |
| cpe:2.3:a:polarssl:polarssl:1.1.0:rc1:*:*:*:*:*:* | 1.1.0 rc1 | Vulnerable | polarssl |
| cpe:2.3:a:polarssl:polarssl:1.1.1:*:*:*:*:*:*:* | 1.1.1 | Vulnerable | polarssl |
| cpe:2.3:a:polarssl:polarssl:1.1.2:*:*:*:*:*:*:* | 1.1.2 | Vulnerable | polarssl |
| cpe:2.3:a:polarssl:polarssl:1.1.3:*:*:*:*:*:*:* | 1.1.3 | Vulnerable | polarssl |
| cpe:2.3:a:polarssl:polarssl:1.1.4:*:*:*:*:*:*:* | 1.1.4 | Vulnerable | polarssl |
| cpe:2.3:a:polarssl:polarssl:1.1.5:*:*:*:*:*:*:* | 1.1.5 | Vulnerable | polarssl |
| cpe:2.3:a:polarssl:polarssl:1.1.6:*:*:*:*:*:*:* | 1.1.6 | Vulnerable | polarssl |
| cpe:2.3:a:polarssl:polarssl:1.2.0:*:*:*:*:*:*:* | 1.2.0 | Vulnerable | polarssl |
- cpe:2.3:a:polarssl:polarssl:1.1.0:*:*:*:*:*:*:* Versions 1.1.0 Vulnerable ·polarssl
- cpe:2.3:a:polarssl:polarssl:1.1.0:rc0:*:*:*:*:*:* Versions 1.1.0 rc0 Vulnerable ·polarssl
- cpe:2.3:a:polarssl:polarssl:1.1.0:rc1:*:*:*:*:*:* Versions 1.1.0 rc1 Vulnerable ·polarssl
- cpe:2.3:a:polarssl:polarssl:1.1.1:*:*:*:*:*:*:* Versions 1.1.1 Vulnerable ·polarssl
- cpe:2.3:a:polarssl:polarssl:1.1.2:*:*:*:*:*:*:* Versions 1.1.2 Vulnerable ·polarssl
- cpe:2.3:a:polarssl:polarssl:1.1.3:*:*:*:*:*:*:* Versions 1.1.3 Vulnerable ·polarssl
- cpe:2.3:a:polarssl:polarssl:1.1.4:*:*:*:*:*:*:* Versions 1.1.4 Vulnerable ·polarssl
- cpe:2.3:a:polarssl:polarssl:1.1.5:*:*:*:*:*:*:* Versions 1.1.5 Vulnerable ·polarssl
- cpe:2.3:a:polarssl:polarssl:1.1.6:*:*:*:*:*:*:* Versions 1.1.6 Vulnerable ·polarssl
- cpe:2.3:a:polarssl:polarssl:1.2.0:*:*:*:*:*:*:* Versions 1.2.0 Vulnerable ·polarssl
Show 7 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:polarssl:polarssl:1.2.1:*:*:*:*:*:*:* | 1.2.1 | Vulnerable | polarssl |
| cpe:2.3:a:polarssl:polarssl:1.2.2:*:*:*:*:*:*:* | 1.2.2 | Vulnerable | polarssl |
| cpe:2.3:a:polarssl:polarssl:1.2.3:*:*:*:*:*:*:* | 1.2.3 | Vulnerable | polarssl |
| cpe:2.3:a:polarssl:polarssl:1.2.4:*:*:*:*:*:*:* | 1.2.4 | Vulnerable | polarssl |
| cpe:2.3:a:polarssl:polarssl:1.2.5:*:*:*:*:*:*:* | 1.2.5 | Vulnerable | polarssl |
| cpe:2.3:a:polarssl:polarssl:1.2.6:*:*:*:*:*:*:* | 1.2.6 | Vulnerable | polarssl |
| cpe:2.3:a:polarssl:polarssl:1.2.7:*:*:*:*:*:*:* | 1.2.7 | Vulnerable | polarssl |
- cpe:2.3:a:polarssl:polarssl:1.2.1:*:*:*:*:*:*:* Versions 1.2.1 Vulnerable ·polarssl
- cpe:2.3:a:polarssl:polarssl:1.2.2:*:*:*:*:*:*:* Versions 1.2.2 Vulnerable ·polarssl
- cpe:2.3:a:polarssl:polarssl:1.2.3:*:*:*:*:*:*:* Versions 1.2.3 Vulnerable ·polarssl
- cpe:2.3:a:polarssl:polarssl:1.2.4:*:*:*:*:*:*:* Versions 1.2.4 Vulnerable ·polarssl
- cpe:2.3:a:polarssl:polarssl:1.2.5:*:*:*:*:*:*:* Versions 1.2.5 Vulnerable ·polarssl
- cpe:2.3:a:polarssl:polarssl:1.2.6:*:*:*:*:*:*:* Versions 1.2.6 Vulnerable ·polarssl
- cpe:2.3:a:polarssl:polarssl:1.2.7:*:*:*:*:*:*:* Versions 1.2.7 Vulnerable ·polarssl
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2013-4623
- 2026-10-03 Alias added: GHSA-hfr2-452h-93q6
References
More Polarssl vulnerabilities
- TI-2011-03940 PolarSSL versions prior to v1.1 use the HAVEGE random number generation algorithm. CVSS 3.1CRITICAL 9.8
- TI-2013-00104 The TLS protocol 1.1 and 1.2 and the DTLS protocol 1.0 and 1.2, as used in OpenSSL… CVSS 2.0LOW 2.6
- TI-2015-01069 The asn1_get_sequence_of function in library/asn1parse.c in PolarSSL 1.0 through 1.2.12… CVSS 2.0HIGH 7.5
- TI-2014-07923 Memory leak in PolarSSL before 1.3.9 allows remote attackers to cause a denial of service… CVSS 2.0HIGH 7.8
- TI-2014-07087 Memory leak in PolarSSL before 1.2.12 and 1.3.x before 1.3.9 allows remote attackers to… CVSS 2.0HIGH 7.8
- TI-2012-01903 A Security Bypass vulnerability exists in PolarSSL 0.99pre4 through 1.1.1 due to a weak… CVSS 3.1HIGH 7.4
Sources
- CVE-2013-4623 · CVE Program
- CVE-2013-4623 · NVD
- FIRST EPSS
- GHSA-hfr2-452h-93q6 · GitHub Advisory Database · CC BY 4.0
- CVE-2013-4623 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences