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.

The remote Fedora 41 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2024-9764fc1fc9 advisory.

    Automatic update for mingw-libgcrypt-1.10.3-1.fc41.

    ##### **Changelog**

    ```
    * Fri Mar  8 2024 Richard W.M. Jones <rjones@redhat.com> - 1.10.3-1
    - Rebase to libgcrypt 1.10.3 to match Fedora (RHBZ#2268272)
    - Add *.pc (pkgconf) files

    ```

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2024:9404 advisory.

    The libgcrypt library provides general-purpose implementations of various cryptographic algorithms.

    Security Fix(es):

    * libgcrypt: vulnerable to Marvin Attack (CVE-2024-2236)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.5 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2024-736 advisory.

    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. (CVE-2024-2236)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
211410	Fedora 41 : mingw-libgcrypt (2024-9764fc1fc9)	Nessus	Fedora Local Security Checks	medium
210795	RHEL 9 : libgcrypt (RHSA-2024:9404)	Nessus	Red Hat Local Security Checks	medium
208981	Amazon Linux 2023 : libgcrypt, libgcrypt-devel (ALAS2023-2024-736)	Nessus	Amazon Linux Local Security Checks	medium

Detections

Analytics

CVE-2024-2236

medium

Tenable Plugins

medium

medium

medium