Bug#1065683: libgcrypt20: CVE-2024-2236

[Salvatore Bonaccorso]

Source: libgcrypt20
Version: 1.10.3-2
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for libgcrypt20. Mainly
filling the bug to track the upstream status with respec of
libgcrypt's status against the marvin attack.

CVE-2024-2236[0]:
| A timing-based side-channel flaw was found in libgcrypt's RSA
| implementation. This issue may allow a remote attacker to initiate a
| Bleichenbacher-style attack, which can lead to the decryption of RSA
| ciphertexts.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2024-2236
    https://www.cve.org/CVERecord?id=CVE-2024-2236
[1] https://lists.gnupg.org/pipermail/gcrypt-devel/2024-March/005607.html
[2] https://people.redhat.com/~hkario/marvin/

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore