CVE-2024-0202

A security vulnerability has been identified in the cryptlib cryptographic library when cryptlib is compiled with the support for RSA key exchange ciphersuites in TLS (by setting the USE_RSA_SUITES define), it will be vulnerable to the timing variant of the Bleichenbacher attack. An attacker that is able to perform a large number of connections to the server will be able to decrypt RSA ciphertexts or forge signatures using server's certificate. THIS CVE ID IS CURRENTLY DISPUTED - MAINTAINER NOTE: There are only two situations where it's enabled, one is for fuzz-testing to exercise code paths that wouldn't otherwise be available, the other is for static source code analysis with tools like Coverity and Prefast, again to open up code paths that otherwise wouldn't be available. It can also be enabled manually in two specific test builds just to make sure the code still compiles OK, to avoid bit rot and verify that the fuzz-testing build will compile without errors.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://bugzilla.redhat.com/show_bug.cgi?id=2256518	Issue Tracking Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2256518	Issue Tracking Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:cryptlib:cryptlib:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2024-02-05 21:15

Updated : 2026-03-16 20:16

NVD link : CVE-2024-0202

Mitre link : CVE-2024-0202

CVE.ORG link : CVE-2024-0202

JSON object : View

Products Affected

cryptlib

cryptlib

CWE

CWE-208

Observable Timing Discrepancy

CWE-203

Observable Discrepancy

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