5.9

CVE-2024-50382: botan_project botan Observable Discrepancy

CVSS: 5.9v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2024-50382DEBIAN-CVE-2024-50382openSUSE-SU-2024:14429-1
Published 23-10-2024Last modified 24-10-2024
Open JSON

Vulnerability summary

CVE-2024-50382 is a medium (CVSS 5.9) Observable Discrepancy vulnerability in botan_project botan. EPSS estimates a 0.55% chance of exploitation in the next 30 days, higher than 45.1% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.9/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.55%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2024:0343-1USN-7586-1

Timeline

  1. 23-10-2024
    PublishedVulnerability first disclosed.
  2. 24-10-2024
    Last modifiedVulnerability information updated.

Description

Botan before 3.6.0, when certain LLVM versions are used, has compiler-induced secret-dependent control flow in lib/utils/ghash/ghash.cpp in GHASH in AES-GCM. There is a branch instead of an XOR with carry. This was observed for Clang in LLVM 15 on RISC-V.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.55%

Chance of exploitation in the next 30 days

Percentile

45%

Versus all other CVEs

30-day change

0.00 pp

From 0.55% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.55%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (arxiv.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Ubuntu2 products
  • botanAll versions (No fix recorded) | < 2.19.1+dfsg-2ubuntu1+esm1 | < 2.19.3+dfsg-1ubuntu2+esm1
  • oscarAll versions (No fix recorded)
Botan_project1 product
Debian1 product
  • botan< 2.19.3+dfsg-1+deb12u1 | < 2.19.5+dfsg-3
Opensuse1 product
  • Botan&distro=openSUSE Tumbleweed< 3.6.0-1.1

4 vendors · 5 products

References

10 links