Is CVE-2013-1623 actively exploited?

CVE-2013-1623 has no public evidence of in-the-wild exploitation as of 2025-04-11.

What is the CVSS score for CVE-2013-1623?

CVE-2013-1623 has a CVSS score of 4.3 (UNKNOWN severity). Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N.

How do I patch CVE-2013-1623?

Patch guidance is available from yassl security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2013-1623.

CVE-2013-1623 - remediation guidance & executive summary

Q: Which products are affected by CVE-2013-1623?

40 products: yassl cyassl, yassl cyassl, yassl cyassl, yassl cyassl, yassl cyassl, and 35 more.

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.

CVSS Metrics

Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N
Access Vector: network
Access Cmplx: medium
Auth: none
Confidentiality: partial
Integrity: none
Availability: none
Weaknesses: CWE-310

Metadata

Primary Vendor: YASSL
Published: 2/8/2013
Last Modified: 4/11/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

yassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyasslyassl : cyassl

Remediation Guidance

Executive Summary

View on NIST NVD