CVE-2024-0567: fedora Signature Bypass

Description

A vulnerability was found in GnuTLS, where a cockpit (which uses gnuTLS) rejects a certificate chain with distributed trust. This issue occurs when validating a certificate chain with cockpit-certificate-ensure. This flaw allows an unauthenticated, remote client or attacker to initiate a denial of service attack.

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CVSS v3.1 Score

7.5

HIGH

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

Weakness Type (CWE)

CWE-347 CWE-347

Affected Products

Vendor	Product	Versions
gnu	gnutls	3.7.0 — 3.8.3
fedoraproject	fedora	All
fedoraproject	fedora	All
netapp	active_iq_unified_manager	All
debian	debian_linux	All

References

Advisories & Patches

https://gitlab.com/gnutls/gnutls/-/issues/1521 https://gitlab.com/gnutls/gnutls/-/issues/1521

Exploits

https://bugzilla.redhat.com/show_bug.cgi?id=2258544 https://gitlab.com/gnutls/gnutls/-/issues/1521 https://bugzilla.redhat.com/show_bug.cgi?id=2258544 https://gitlab.com/gnutls/gnutls/-/issues/1521

Other References

https://access.redhat.com/errata/RHSA-2024:0533 https://access.redhat.com/errata/RHSA-2024:1082 https://access.redhat.com/errata/RHSA-2024:1383 https://access.redhat.com/errata/RHSA-2024:2094 https://access.redhat.com/security/cve/CVE-2024-0567 https://lists.gnupg.org/pipermail/gnutls-help/2024-January/004841.html http://www.openwall.com/lists/oss-security/2024/01/19/3 https://access.redhat.com/errata/RHSA-2024:0533 https://access.redhat.com/errata/RHSA-2024:1082 https://access.redhat.com/errata/RHSA-2024:1383

Frequently Asked Questions

What is CVE-2024-0567? +

A vulnerability was found in GnuTLS, where a cockpit (which uses gnuTLS) rejects a certificate chain with distributed trust. This issue occurs when validating a certificate chain with cockpit-certificate-ensure. This flaw allows an unauthenticated, remote client or attacker to initiate a denial of service attack. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-0567? +

CVE-2024-0567 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-0567? +

CVE-2024-0567 affects products from debian, fedoraproject, gnu, netapp, specifically: active_iq_unified_manager, debian_linux, fedora, gnutls. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-0567? +

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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