randombit Botan up to 3.5.x donna128 lib/utils/donna128.h information exposure

Summaryinfo

A vulnerability has been found in randombit Botan up to 3.5.x and classified as problematic. Affected is an unknown function in the library lib/utils/donna128.h of the component donna128. This manipulation causes an unknown weakness. The identification of this vulnerability is CVE-2024-50383. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in randombit Botan up to 3.5.x. It has been declared as problematic. Affected by this vulnerability is an unknown part in the library lib/utils/donna128.h of the component donna128. The CWE definition for the vulnerability is CWE-203. The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not. The impact remains unknown. The summary by CVE is:

Botan before 3.6.0, when certain GCC versions are used, has a compiler-induced secret-dependent operation in lib/utils/donna128.h in donna128 (used in Chacha-Poly1305 and x25519). An addition can be skipped if a carry is not set. This was observed for GCC 11.3.0 with -O2 on MIPS, and GCC on x86-i386. (Only 32-bit processors can be affected.)

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2024-50383 since 10/23/2024. 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.

The vulnerability scanner Nessus provides a plugin with the ID 209976 (openSUSE 15 Security Update : Botan (openSUSE-SU-2024:0343-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.6.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (209976). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• randombit

Name

• Botan

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5

License

• open-source

Website

• Product: https://github.com/randombit/botan/

CPE 2.3info

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

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