CVE-2013-4623: n/a vulnerability

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 properl...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 16:52 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2013-4623 is a remote denial-of-service issue in PolarSSL certificate parsing. A malformed TLS certificate message containing a PEM encoded certificate can make affected versions loop indefinitely and consume CPU. The business impact is service degradation or outage in products that embed vulnerable PolarSSL versions. Exposure is most likely where applications or appliances use PolarSSL 1.1.x before 1.1.7 or 1.2.x before 1.2.8 and process certificate messages from untrusted TLS peers. Bundled or statically linked copies matter; package names alone may not reveal exposure. Treat this as a targeted availability risk. It is not documented here as actively exploited, but affected TLS-facing systems could be forced into CPU exhaustion. Prioritize remediation for exposed services, embedded products, and systems with poor redundancy. Mitigation focus: Upgrade PolarSSL 1.1.x to 1.1.7 or later.; Upgrade PolarSSL 1.2.x to 1.2.8 or later.; Apply relevant Fedora or Debian security updates where those packages are used..

Prepared: Jun 14, 2026, 15:32 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Sep 30, 2013, 20:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://polarssl.org/tech-updates/security-advisories/polarssl-security-advisory-2013-03CVE reference · x_refsource_CONFIRM
https://bugzilla.redhat.com/show_bug.cgi?id=997767CVE reference · x_refsource_CONFIRM
https://github.com/polarssl/polarssl/commit/1922a4e6aade7b1d685af19d4d9339ddb5c02859CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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