CVE-2024-45193

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-45193
An issue was discovered in Matrix libolm through 3.2.16. There is Ed25519 signature malleability due to lack of validation criteria (does not ensure that S < n). This refers to the libolm implementation of Olm. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

4.3 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://gitlab.matrix.org/matrix-org/olm/ Product
https://gitlab.matrix.org/matrix-org/olm/-/commit/6d4b5b07887821a95b144091c8497d09d377f985 Patch
https://news.ycombinator.com/item?id=41249371 Issue Tracking
https://soatok.blog/2024/08/14/security-issues-in-matrixs-olm-library/ Exploit
Configurations

Configuration 1 (hide)

cpe:2.3:a:matrix:olm:*:*:*:*:*:*:*:*
History

17 Jun 2025, 19:51

Type Values Removed Values Added
CPE cpe:2.3:a:matrix:olm:*:*:*:*:*:*:*:*
First Time Matrix olm
Matrix
References () https://gitlab.matrix.org/matrix-org/olm/ - () https://gitlab.matrix.org/matrix-org/olm/ - Product
References () https://gitlab.matrix.org/matrix-org/olm/-/commit/6d4b5b07887821a95b144091c8497d09d377f985 - () https://gitlab.matrix.org/matrix-org/olm/-/commit/6d4b5b07887821a95b144091c8497d09d377f985 - Patch
References () https://news.ycombinator.com/item?id=41249371 - () https://news.ycombinator.com/item?id=41249371 - Issue Tracking
References () https://soatok.blog/2024/08/14/security-issues-in-matrixs-olm-library/ - () https://soatok.blog/2024/08/14/security-issues-in-matrixs-olm-library/ - Exploit

10 Sep 2024, 19:35

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 4.3
CWE CWE-327

01 Sep 2024, 22:15

Type Values Removed Values Added
Summary (en) An issue was discovered in Matrix libolm through 3.2.16. There is Ed25519 signature malleability due to lack of validation criteria (does not ensure that S < n). NOTE: This vulnerability only affects products that are no longer supported by the maintainer. (en) An issue was discovered in Matrix libolm through 3.2.16. There is Ed25519 signature malleability due to lack of validation criteria (does not ensure that S < n). This refers to the libolm implementation of Olm. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

28 Aug 2024, 19:15

Type Values Removed Values Added
Summary (en) An issue was discovered in Matrix libolm (aka Olm) through 3.2.16. There is Ed25519 signature malleability due to lack of validation criteria (does not ensure that S < n). NOTE: This vulnerability only affects products that are no longer supported by the maintainer. (en) An issue was discovered in Matrix libolm through 3.2.16. There is Ed25519 signature malleability due to lack of validation criteria (does not ensure that S < n). NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

23 Aug 2024, 16:18

Type Values Removed Values Added
Summary
  • (es) Se descubrió un problema en Matrix libolm (también conocido como Olm) hasta la versión 3.2.16. Existe maleabilidad de la firma Ed25519 debido a la falta de criterios de validación (no asegura que S &lt; n). NOTA: Esta vulnerabilidad solo afecta a productos que ya no son compatibles con el fabricante.

22 Aug 2024, 16:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-08-22 16:15

Updated : 2025-06-17 19:51

NVD link : CVE-2024-45193

Mitre link : CVE-2024-45193

CVE.ORG link : CVE-2024-45193

JSON object : View

Products Affected

matrix

  • olm
CWE
CWE-327

Use of a Broken or Risky Cryptographic Algorithm