GnuTLS libtasn1 up to 4.19.x Set Of Element denial of service

Summaryinfo

A vulnerability has been found in GnuTLS libtasn1 up to 4.19.x and classified as problematic. The affected element is an unknown function of the component Set Of Element Handler. Performing a manipulation results in denial of service. This vulnerability is reported as CVE-2024-12133. The attack is possible to be carried out remotely. Moreover, an exploit is present. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in GnuTLS libtasn1 up to 4.19.x. It has been classified as problematic. This affects an unknown part of the component Set Of Element Handler. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

A flaw in libtasn1 causes inefficient handling of specific certificate data. When processing a large number of elements in a certificate, libtasn1 takes much longer than expected, which can slow down or even crash the system. This flaw allows an attacker to send a specially crafted certificate, causing a denial of service attack.

It is possible to read the advisory at gitlab.com. This vulnerability is uniquely identified as CVE-2024-12133 since 12/04/2024. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but an exploit is available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 215973 (Debian dsa-5863 : libtasn1-6 - security update), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the databases at Tenable (215973), EUVD (EUVD-2024-50622) and CERT Bund (WID-SEC-2025-2363). Be aware that VulDB is the high quality source for vulnerability data.

Affected

• Oracle MySQL
• Red Hat Enterprise Linux
• Ubuntu Linux
• Oracle Linux
• RESF Rocky Linux
• Xerox FreeFlow Print Server

Productinfo

Type

• Network Encryption Software

Vendor

• GnuTLS

Name

• libtasn1

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4
• 4.5
• 4.6
• 4.7
• 4.8
• 4.9
• 4.10
• 4.11
• 4.12
• 4.13
• 4.14
• 4.15
• 4.16
• 4.17
• 4.18
• 4.19

License

• open-source

CPE 2.3info

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CPE 2.2info

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Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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