#VU87339 Information Exposure Through Timing Discrepancy in Libgcrypt - CVE-2024-2236

Vulnerability identifier: #VU87339

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-2236

CWE-ID: CWE-208

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Libgcrypt
Client/Desktop applications / Encryption software

Vendor: GNU

Description

The vulnerability allows a remote attacker to perform timing attack.

The vulnerability exists due to an error in libgcrypt's RSA implementation. A remote attacker can initiate a Bleichenbacher-style attack, which can lead to the decryption of RSA ciphertexts.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Libgcrypt: 1.2.3 - 1.10.3

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External links
http://access.redhat.com/security/cve/CVE-2024-2236
http://bugzilla.redhat.com/show_bug.cgi?id=2268268

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.