Vulnerability · Published Oct 23, 2024 · Assigned by mitre
CVE-2024-50383
Medium 5.9
In plain English
A medium-severity security flaw in the botan package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.)
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | botan | 2.19.3+dfsg-1+deb12u1 | DEBIAN-CVE-2024-50383 |
| Debian:13 | botan | 2.19.5+dfsg-3 | DEBIAN-CVE-2024-50383 |
| Ubuntu:22.04:LTS | oscar | no fix listed | UBUNTU-CVE-2024-50383 |
| Ubuntu:24.04:LTS | oscar | no fix listed | UBUNTU-CVE-2024-50383 |
| Ubuntu:25.10 | oscar | no fix listed | UBUNTU-CVE-2024-50383 |
| Ubuntu:26.04:LTS | oscar | no fix listed | UBUNTU-CVE-2024-50383 |
| Ubuntu:26.10 | oscar | no fix listed | UBUNTU-CVE-2024-50383 |
Affected products (as reported)
Weakness: CWE-203 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N