PolarSSL 1.3.8 does not properly negotiate the signature algorithm to use, which allows remote attackers to conduct downgrade attacks via unspecified vectors.

PolarSSL 1.3.8 does not properly negotiate the signature algorithm to use, allowing remote attackers to conduct downgrade attacks.

This plugin sends a list of hash algorithms (SHA512, SHA384, SHA256, SHA224, SHA1, and MD5) in descending order, and checks if the server selects MD5.

- Update to 1.2.12

    - CVE-2014-8628 (#1159845)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

polarssl was updated to version 1.3.9 to fix two security issues.

These security issues were fixed :

  - Lowest common hash was selected from     signature_algorithms extension in TLS 1.2     (CVE-2014-8627).

  - Remotely-triggerable memory leak when parsing some X.509     certificates (CVE-2014-8628).

ID	Name	Product	Family	Severity
80399	PolarSSL Weak Signature Algorithm Negotiation	Nessus	General	medium
79395	Fedora 19 : polarssl-1.2.12-1.fc19 (2014-14912)	Nessus	Fedora Local Security Checks	high
79394	Fedora 20 : polarssl-1.2.12-1.fc20 (2014-14898)	Nessus	Fedora Local Security Checks	high
79348	openSUSE Security Update : polarssl (openSUSE-SU-2014:1457-1)	Nessus	SuSE Local Security Checks	high

Detections

Analytics

CVE-2014-8627

critical

Tenable Plugins

medium

high

high

high