CVE-2013-4623
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…
Does this matter?
Lower severity and a low EPSS score (1.89%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 2.0
- 4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:N/A:P
- EPSS
- 1.89% probability · 78th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- polarssl/polarssl
- Source
- cve@mitre.org
References
- http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115922.html
- http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115927.html
- http://lists.fedoraproject.org/pipermail/package-announce/2013-September/116351.html
- http://www.debian.org/security/2013/dsa-2782
- http://www.securityfocus.com/bid/61764
- https://bugzilla.redhat.com/show_bug.cgi?id=997767
- https://github.com/polarssl/polarssl/commit/1922a4e6aade7b1d685af19d4d9339ddb5c02859Exploit, Patch
- https://polarssl.org/tech-updates/security-advisories/polarssl-security-advisory-2013-03Patch, Vendor Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115922.html
- http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115927.html
- http://lists.fedoraproject.org/pipermail/package-announce/2013-September/116351.html
- http://www.debian.org/security/2013/dsa-2782
- http://www.securityfocus.com/bid/61764
- https://bugzilla.redhat.com/show_bug.cgi?id=997767
- https://github.com/polarssl/polarssl/commit/1922a4e6aade7b1d685af19d4d9339ddb5c02859Exploit, Patch
- https://polarssl.org/tech-updates/security-advisories/polarssl-security-advisory-2013-03Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.