CVE-2024-28834: Weak Crypto (CVSS 5.3)

Description

A flaw was found in GnuTLS. The Minerva attack is a cryptographic vulnerability that exploits deterministic behavior in systems like GnuTLS, leading to side-channel leaks. In specific scenarios, such as when using the GNUTLS_PRIVKEY_FLAG_REPRODUCIBLE flag, it can result in a noticeable step in nonce size from 513 to 512 bits, exposing a potential timing side-channel.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness Type (CWE)

CWE-327 CWE-327

References

Other References

https://access.redhat.com/errata/RHSA-2024:1784 https://access.redhat.com/errata/RHSA-2024:1879 https://access.redhat.com/errata/RHSA-2024:1997 https://access.redhat.com/errata/RHSA-2024:2044 https://access.redhat.com/errata/RHSA-2024:2570 https://access.redhat.com/errata/RHSA-2024:2889 https://access.redhat.com/security/cve/CVE-2024-28834 https://bugzilla.redhat.com/show_bug.cgi?id=2269228 https://lists.gnupg.org/pipermail/gnutls-help/2024-March/004845.html https://minerva.crocs.fi.muni.cz/

Frequently Asked Questions

What is CVE-2024-28834? +

A flaw was found in GnuTLS. The Minerva attack is a cryptographic vulnerability that exploits deterministic behavior in systems like GnuTLS, leading to side-channel leaks. In specific scenarios, such as when using the GNUTLS_PRIVKEY_FLAG_REPRODUCIBLE flag, it can result in a noticeable step in nonce size from 513 to 512 bits, exposing a potential timing side-channel. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2024-28834? +

CVE-2024-28834 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

How do I check if I'm vulnerable to CVE-2024-28834? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-28834