When sampling randomness for a shared secret, the implementation of Kyber and FrodoKEM, did not check whether crypto/rand.Read() returns an error. In rare deployment cases (error thrown by the Read() function), this could lead to a predictable shared secret. The tkn20 and blindrsa components did not check whether enough randomness was returned from the user provided randomness source. Typically the user provides crypto/rand.Reader, which in the vast majority of cases will always return the right number random bytes. In the cases where it does not, or the user provides a source that does not, the blinding for blindrsa is weak and integrity of the plaintext is not ensured in tkn20.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - When sampling randomness for a shared secret, the implementation of Kyber and FrodoKEM, did not check
    whether crypto/rand.Read() returns an error. In rare deployment cases (error thrown by the Read()
    function), this could lead to a predictable shared secret. The tkn20 and blindrsa components did not check
    whether enough randomness was returned from the user provided randomness source. Typically the user
    provides crypto/rand.Reader, which in the vast majority of cases will always return the right number
    random bytes. In the cases where it does not, or the user provides a source that does not, the blinding
    for blindrsa is weak and integrity of the plaintext is not ensured in tkn20. (CVE-2023-1732)

The remote Fedora 41 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2024-97fd10b49f advisory.

    Automatic update for golang-github-cloudflare-circl-1.3.7-1.fc41.

    ##### **Changelog**

    ```
    * Thu Mar  7 2024 Mikel Olasagasti Uranga <mikel@olasagasti.info> - 1.3.7-1
    - Update to 1.3.7 - Closes rhbz#2165786 rhbz#2203758
    * Sun Feb 11 2024 Maxwell G <maxwell@gtmx.me> - 1.3.1-6
    - Rebuild for golang 1.22.0
    * Wed Jan 24 2024 Fedora Release Engineering <releng@fedoraproject.org> - 1.3.1-5
    - Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild

    ```

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.

ID	Name	Product	Family	Type	Severity
427979	Bottlerocket: amazon-ssm-agent: security update to 2.3.6	Tenable Cloud Security	Bottlerocket Local Security Checks	Local	high
427979	Bottlerocket: amazon-ssm-agent: security update to 2.3.6	Tenable Self-Hosted Container Security	Bottlerocket Local Security Checks	Local	high
409036	SCA: security update for github.com/cloudflare/circl (GHSA-2q89-485c-9j2x)	Tenable Cloud Security	SCA Checks	Local	high
409036	SCA: security update for github.com/cloudflare/circl (GHSA-2q89-485c-9j2x)	Tenable Self-Hosted Container Security	SCA Checks	Local	high
211134	Fedora 41 : golang-github-cloudflare-circl (2024-97fd10b49f)	Nessus	Fedora Local Security Checks	Local	high

Detections

Analytics

CVE-2023-1732

high

Tenable Plugins

high

high

high

high

high