Medium severity · published Aug 22, 2024
CVE-2024-45193
An issue was discovered in Matrix libolm through 3.2.16
4.3
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OL
Olm · Matrix
through 3.2.16 · source: NVD, CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-45193
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-45193
Product
https://gitlab.matrix.org/matrix-org/olm/
Patch
https://gitlab.matrix.org/matrix-org/olm/-/commit/6d4b5b07887821a95b144091c8497d09d377f985
Issue Tracking
https://news.ycombinator.com/item?id=41249371
Exploit
https://soatok.blog/2024/08/14/security-issues-in-matrixs-olm-library/
More from Olm
9.8
CVE-2021-44538
The olm_session_describe function in Matrix libolm before 3.2.7 is vulnerable to a buffer overflow
9.8
CVE-2021-34813
Matrix libolm before 3.2.3 allows a malicious Matrix homeserver to crash a client (while it is attempting to retrieve an Olm encrypted room key backup from the homeserver) because…
5.3
CVE-2024-45191
An issue was discovered in Matrix libolm through 3.2.16
5.3
CVE-2024-45192
An issue was discovered in Matrix libolm through 3.2.16