phpseclib up to 3.0.33 Math/BinaryField.php denial of service

Summaryinfo

A vulnerability marked as problematic has been reported in phpseclib up to 3.0.33. Affected is an unknown function of the file Math/BinaryField.php. Performing a manipulation results in denial of service. This vulnerability is identified as CVE-2023-49316. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in phpseclib up to 3.0.33. It has been classified as problematic. This affects an unknown code of the file Math/BinaryField.php. 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:

In Math/BinaryField.php in phpseclib before 3.0.34, excessively large degrees can lead to a denial of service.

The weakness was released 11/27/2023 as 964d78101a70305df33f442f5490f0adb3b7e77f. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2023-49316 since 11/26/2023. Technical details are known, but no exploit is available.

By approaching the search of inurl:Math/BinaryField.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 3.0.34 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 964d78101a70305df33f442f5490f0adb3b7e77f 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-2023-2993). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• phpseclib

Version

• 3.0.0
• 3.0.1
• 3.0.2
• 3.0.3
• 3.0.4
• 3.0.5
• 3.0.6
• 3.0.7
• 3.0.8
• 3.0.9
• 3.0.10
• 3.0.11
• 3.0.12
• 3.0.13
• 3.0.14
• 3.0.15
• 3.0.16
• 3.0.17
• 3.0.18
• 3.0.19
• 3.0.20
• 3.0.21
• 3.0.22
• 3.0.23
• 3.0.24
• 3.0.25
• 3.0.26
• 3.0.27
• 3.0.28
• 3.0.29
• 3.0.30
• 3.0.31
• 3.0.32
• 3.0.33

License

• open-source

Website

• Product: https://github.com/phpseclib/phpseclib/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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