spbu-se spbu_se_site prior 2024.01.29 on Windows Avatar Image allocation of resources

Summaryinfo

A vulnerability was found in spbu-se spbu_se_site on Windows. It has been declared as critical. Affected is an unknown function of the component Avatar Image Handler. Executing a manipulation can lead to allocation of resources. This vulnerability appears as CVE-2024-23826. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in spbu-se spbu_se_site on Windows and classified as critical. This vulnerability affects some unknown processing of the component Avatar Image Handler. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. As an impact it is known to affect availability. CVE summarizes:

spbu_se_site is the website of the Department of System Programming of St. Petersburg State University. Before 2024.01.29, when uploading an avatar image, an authenticated user may intentionally use a large Unicode filename which would lead to a server-side denial of service under Windows. This is due to no limitation of the length of the filename and the costly use of the Unicode normalization with the form NFKD on Windows OS. This vulnerability was fixed in the 2024.01.29 release.

The weakness was presented 01/29/2024 as GHSA-5vfc-v7hg-pvwm. The advisory is shared for download at github.com. This vulnerability was named CVE-2024-23826 since 01/22/2024. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 2024.01.29 eliminates this vulnerability. Applying the patch 5ad623eb0405260763046343c5785bc588d8a57d is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2024-21273). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• spbu-se

Name

• spbu_se_site

License

• open-source

Website

• Product: https://github.com/spbu-se/spbu_se_site/

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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