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Fencer Vulns
high 8.2

CVE-2024-37305 json

Buffer overflow in deserialization in oqs-provider

published 2024-06-17 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-36566

cvss
8.2
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 39%
public exploits
0
none known

Summary

oqs-provider is a provider for the OpenSSL 3 cryptography library that adds support for post-quantum cryptography in TLS, X.509, and S/MIME using post-quantum algorithms from liboqs. Flaws have been identified in the way oqs-provider handles lengths decoded with DECODE_UINT32 at the start of serialized hybrid (traditional + post-quantum) keys and signatures. Unchecked length values are later used for memory reads and writes; malformed input can lead to crashes or information leakage. Handling of plain/non-hybrid PQ key operation is not affected. This issue has been patched in in v0.6.1. All users are advised to upgrade. There are no workarounds for this issue.

Patch / fix

  • open_quantum_safe oqs_provider 0.6.1
  • oqs-provider SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 0.7.0-150600.3.3.1
  • liboqs SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 0.12.0-150600.3.3.1

suse advisories SUSE-SU-2025:0005-1

  • oqs-provider openSUSE Tumbleweed 0.6.1-1.1

opensuse advisories openSUSE-SU-2024:14054-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-37305 updated cvss 8.2

oqs-provider: buffer overflow in deserialization

  • Red Hat Enterprise Linux 10 oqsprovider
    affected: workaround, no fix available “It is recommended to update to the latest stable version to address this vulnerability.”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Affected products

  • open-quantum-safe oqs-provider
  • open_quantum_safe oqs_provider

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input
  • CWE-130 Improper Handling of Length Parameter Inconsistency
  • CWE-190 Integer Overflow or Wraparound
  • CWE-680 Integer Overflow to Buffer Overflow
  • CWE-805 Buffer Access with Incorrect Length Value

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.