CVE-2024-50383

Description

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.)

Category

5.9
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.08%
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/randombit/botan/commit/53b0cfde580e86b03d0d27a488b6c134f662e957
https://github.com/randombit/botan/compare/3.5.0...3.6.0
https://arxiv.org/pdf/2410.13489
https://news.ycombinator.com/item?id=41887153

Frequently Asked Questions

What is the severity of CVE-2024-50383?
CVE-2024-50383 has been scored as a medium severity vulnerability.
How to fix CVE-2024-50383?
To fix CVE-2024-50383, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-50383 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-50383 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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