CVE Database


Impact: Moderate
Public: 2013-02-04
Bugzilla: 908445: CVE-2013-1623 yaSSL: TLS CBC padding timing attack


The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2013-1623 from the MITRE CVE dictionary and NIST NVD.


Not vulnerable. This issue did not affect the versions of mysql as shipped with Red Hat Enterprise Linux 5 or 6. The packages use OpenSSL and not yaSSL.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score: 5.1
Base Metrics: AV:N/AC:H/Au:N/C:P/I:P/A:P
Access Vector: Network
Access Complexity: High
Authentication: None
Confidentiality Impact: Partial
Integrity Impact: Partial
Availability Impact: Partial

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat security errata

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External References

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