PT-2024-31476 · Matrix+1 · Libolm+1

Soatok · Published 2024-08-22 · Updated 2024-09-10 · CVE-2024-45193

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions Matrix libolm versions 3.2.16 and earlier

Description There is Ed25519 signature malleability due to lack of validation criteria in the libolm implementation of Olm, which does not ensure that S < n. This issue only affects products that are no longer supported by the maintainer.

Recommendations For Matrix libolm versions 3.2.16 and earlier, consider switching to the successor effort vodozemac as soon as possible, as libolm has been officially deprecated by the Matrix Foundation. As a temporary workaround, consider restricting the use of the Ed25519 signature functionality until a more secure alternative is implemented.

Exploit

Fix

Use of a Broken Cryptographic Algorithm

Weakness Enumeration

CWE-327

Related Identifiers

CVE-2024-45193

RUSTSEC-2024-0368

Affected Products

Debian

Libolm

References · 19

• 🔥 https://soatok.blog/2024/08/14/security-issues-in-matrixs-olm-library · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2024-45193 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2024-45193 · Security Note
• https://gitlab.matrix.org/matrix-org/olm/-/commit/6d4b5b07887821a95b144091c8497d09d377f985 · Patch
• https://osv.dev/vulnerability/RUSTSEC-2024-0368 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2024-45193 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2024-45193 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2024-45193 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-45193 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-45193 · Security Note
• https://gitlab.matrix.org/matrix-org/olm · Note
• https://twitter.com/CVEnew/status/1826645464424276248 · Twitter Post
• https://rustsec.org/advisories/RUSTSEC-2024-0368.html · Note
• https://t.me/cvedetector/3923 · Telegram Post
• https://twitter.com/VulmonFeeds/status/1826702482665353415 · Twitter Post