libjwt 1.15.3 strcmp timing discrepancy

Summaryinfo

A vulnerability, which was classified as critical, has been found in libjwt 1.15.3. Affected is the function strcmp. This manipulation causes timing discrepancy. The identification of this vulnerability is CVE-2024-25189. There is no exploit available.

Detailsinfo

A vulnerability has been found in libjwt 1.15.3 and classified as problematic. Affected by this vulnerability is the function strcmp. The manipulation with an unknown input leads to a timing discrepancy vulnerability. The CWE definition for the vulnerability is CWE-208. Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not. As an impact it is known to affect confidentiality. The summary by CVE is:

libjwt 1.15.3 uses strcmp (which is not constant time) to verify authentication, which makes it easier to bypass authentication via a timing side channel.

The weakness was shared 02/08/2024. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2024-25189 since 02/07/2024. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• libjwt

Version

• 1.15.3

CPE 2.3info

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CPE 2.2info

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