CVE-2013-1624 Improper Input Validation in Bouncy Castle

What is CVE-2013-1624?

CVE-2013-1624 is a medium-severity vulnerability in Bouncycastle Bc-Java, published on 8 Feb 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The TLS implementation in the Bouncy Castle Java library before 1.48 and C# library before 1.8 does 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.

Weakness: CWE-310

Which versions are affected by CVE-2013-1624?

2 open source packages ship an affected version, including org.bouncycastle:bcprov-jdk15on. It affects 2 products.

Products include Bouncycastle Bc-Java, Bouncycastle Legion-of-the-Bouncy-Castle-C\#-Cryptography-Api.

How do I fix CVE-2013-1624?

Upgrade org.bouncycastle:bcprov-jdk15on to 1.48 or later.

Is CVE-2013-1624 being exploited?

There is no known exploitation of CVE-2013-1624 in the wild and no public exploit code.

Other vulnerabilities in Bouncycastle Bc-Java

• CVE-2007-6721 Legion of the Bouncy Castle Java Cryptography API Bleichenbacher Oracle Vulnerability Critical 10.0
• CVE-2018-1000613 Deserialization of Untrusted Data in Bouncy castle Critical 9.8
• CVE-2026-58062 Stapled OCSP response accepted without binding to the checked certificate Critical 9.3
• CVE-2026-59638 JSSE hostname verifier CN-fallback enabled by default despite documented opt-in Critical 9.3
• CVE-2026-59650 MTI/A0 DH agreement exponentiates unvalidated peer value Critical 9.3

All Bouncycastle Bc-Java vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2013-1624, GHSA-8353-fgcr-xfhx.