4.3
MEDIUM
CVE-2024-45193
Matrix libolm Ed25519 Signature Malleability Vulnerability
Description

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.

INFO

Published Date :

Aug. 22, 2024, 4:15 p.m.

Last Modified :

Sept. 10, 2024, 7:35 p.m.

Remotely Exploitable :

Yes !

Impact Score :

1.4

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2024-45193 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

No affected product recoded yet

References to Advisories, Solutions, and Tools

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2024-45193 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2024-45193 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Sep. 10, 2024

    Action Type Old Value New Value
    Added CWE CISA-ADP CWE-327
    Added CVSS V3.1 CISA-ADP AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
  • CVE Modified by [email protected]

    Sep. 01, 2024

    Action Type Old Value New Value
    Changed Description 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. 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.
  • CVE Modified by [email protected]

    Aug. 28, 2024

    Action Type Old Value New Value
    Changed Description 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. 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.
  • CVE Received by [email protected]

    Aug. 22, 2024

    Action Type Old Value New Value
    Added Description 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.
    Added Reference MITRE https://soatok.blog/2024/08/14/security-issues-in-matrixs-olm-library/ [No types assigned]
    Added Reference MITRE https://gitlab.matrix.org/matrix-org/olm/ [No types assigned]
    Added Reference MITRE https://news.ycombinator.com/item?id=41249371 [No types assigned]
    Added Reference MITRE https://gitlab.matrix.org/matrix-org/olm/-/commit/6d4b5b07887821a95b144091c8497d09d377f985 [No types assigned]
    Added Tag MITRE unsupported-when-assigned
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2024-45193 is associated with the following CWEs:

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability