Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2013-1623

4.3 · MEDIUM

The TLS and DTLS implementations in wolfSSL CyaSSL before 2.5.0 do not properly consider timing side-channel attacks on a noncompliant MAC check operation during the processing of malformed CBC pad…

Published Feb 8, 2013yasslCWE-310EPSS 2.42%

Overview

CVE-2013-1623 is a medium-severity vulnerability affecting yassl cyassl. It was published on February 8, 2013 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The TLS and DTLS implementations in wolfSSL CyaSSL before 2.5.0 do not properly consider timing side-channel attacks on a noncompliant MAC check operation during the processing of malformed CBC padding, which allows remote attackers to conduct distinguishing attacks and plaintext-recovery attacks via statistical analysis of timing data for crafted packets, a related issue to CVE-2013-0169.

Remediation

Check the references section for vendor advisories and patches from yassl. Update cyassl to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
yasslcyassl0Affected

References

Refopenwall.com/lists/oss-security/2013/02/05/24Refsecunia.com/advisories/53372Refsecurity.gentoo.org/glsa/glsa-201308-06.xmlRefwww.isg.rhul.ac.uk/tls/TLStiming.pdfRefwww.yassl.com/yaSSL/Blog/Entries/2013/2/5_WolfSSL%2C_provider_of_CyaSSL_Embedded_SSL%2C_releases_first_embedded_TLS_and_DTLS_protocol_fix_for_Lucky_Thirteen_Attack.htmlRefopenwall.com/lists/oss-security/2013/02/05/24Refsecunia.com/advisories/53372Refsecurity.gentoo.org/glsa/glsa-201308-06.xmlRefwww.isg.rhul.ac.uk/tls/TLStiming.pdfRefwww.yassl.com/yaSSL/Blog/Entries/2013/2/5_WolfSSL%2C_provider_of_CyaSSL_Embedded_SSL%2C_releases_first_embedded_TLS_and_DTLS_protocol_fix_for_Lucky_Thirteen_Attack.html

How CyberStrike helps

Frequently asked questions

What is CVE-2013-1623?

CVE-2013-1623 is a medium-severity vulnerability affecting yassl cyassl. It was published on February 8, 2013 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

How severe is CVE-2013-1623?

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2013-1623?

Check the references section for vendor advisories and patches from yassl. Update cyassl to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2013-1623?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2013-1623 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related MEDIUM CVEs from 2013

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999