Vulnerability Monitor

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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 consumption) via a certificate message that contains a PEM encoded certificate.

Security Impact Summary

CVE-2013-4623 is a security vulnerability that . Impacting 1 product from polarssl organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2013, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2013-09-30T22:55:04.930

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 4.3 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-20

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	polarssl	polarssl	1.1.0	Yes
Application	polarssl	polarssl	1.1.0	Yes
Application	polarssl	polarssl	1.1.0	Yes
Application	polarssl	polarssl	1.1.1	Yes
Application	polarssl	polarssl	1.1.2	Yes
Application	polarssl	polarssl	1.1.3	Yes
Application	polarssl	polarssl	1.1.4	Yes
Application	polarssl	polarssl	1.1.5	Yes
Application	polarssl	polarssl	1.1.6	Yes
Application	polarssl	polarssl	1.2.0	Yes
Application	polarssl	polarssl	1.2.1	Yes
Application	polarssl	polarssl	1.2.2	Yes
Application	polarssl	polarssl	1.2.3	Yes
Application	polarssl	polarssl	1.2.4	Yes
Application	polarssl	polarssl	1.2.5	Yes
Application	polarssl	polarssl	1.2.6	Yes
Application	polarssl	polarssl	1.2.7	Yes

References

http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115922.html ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115927.html ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2013-September/116351.html ([email protected])
http://www.debian.org/security/2013/dsa-2782 ([email protected])
http://www.securityfocus.com/bid/61764 ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=997767 ([email protected])
https://github.com/polarssl/polarssl/commit/1922a4e6aade7b1d685af19d4d9339ddb5c02859 Exploit, Patch ([email protected])
https://polarssl.org/tech-updates/security-advisories/polarssl-security-advisory-2013-03 Patch, Vendor Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115922.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115927.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2013-September/116351.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2013/dsa-2782 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/61764 (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=997767 (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/polarssl/polarssl/commit/1922a4e6aade7b1d685af19d4d9339ddb5c02859 Exploit, Patch (af854a3a-2127-422b-91ae-364da2661108)
https://polarssl.org/tech-updates/security-advisories/polarssl-security-advisory-2013-03 Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For polarssl's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.