Timing side-channel attack in libgcrypt



Risk Medium
Patch available NO
Number of vulnerabilities 1
CVE-ID CVE-2024-2236
CWE-ID CWE-208
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Libgcrypt
Client/Desktop applications / Encryption software

Vendor GNU

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Information Exposure Through Timing Discrepancy

EUVDB-ID: #VU87339

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 - Information Exposure Through Timing Discrepancy

Exploit availability: No

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

CPE2.3 External links

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


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.



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