CVE-2024-45191
An issue was discovered in Matrix libolm (aka Olm) through 3.2.16. The AES implementation is...
An issue was discovered in Matrix libolm through 3.2.16. The AES implementation is vulnerable to cache-timing attacks due to use of S-boxes. This is related to software that uses a lookup table for the SubWord step. This refers to the libolm implementation of Olm. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
An issue was discovered in Matrix libolm through 3.2.16. The AES implementation is vulnerable to cache-timing attacks due to use of S-boxes. This is related to software that uses a lookup table for the SubWord step. This refers to the libolm implementation of Olm. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
- Record
CVE-2024-45191- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-208
- Updated
- 2026-11-02
EUVDEUVD-2024-41367
An issue was discovered in Matrix libolm through 3.2.16. The AES implementation is vulnerable to cache-timing attacks due to use of S-boxes. This is related to software that uses a lookup table for the SubWord step. This refers to the libolm implementation of Olm. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
- Record
EUVD-2024-41367- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-gc66-2jq6-66c6
An issue was discovered in Matrix libolm (aka Olm) through 3.2.16. The AES implementation is...
An issue was discovered in Matrix libolm (aka Olm) through 3.2.16. The AES implementation is vulnerable to cache-timing attacks due to use of S-boxes. This is related to software that uses a lookup table for the SubWord step. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
- Record
GHSA-gc66-2jq6-66c6- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-208
- Updated
- 2026-11-02
NVD
An issue was discovered in Matrix libolm through 3.2.16. The AES implementation is vulnerable to cache-timing attacks due to use of S-boxes. This is related to software that uses a lookup table for the SubWord step. This refers to the libolm implementation of Olm. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
- Record
CVE-2024-45191- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-208
- Updated
- 2026-11-02
OSV
An issue was discovered in Matrix libolm through 3.2.16. The AES implementation is vulnerable to cache-timing attacks due to use of S-boxes. This is related to software that uses a lookup table for the SubWord step. This refers to the libolm implementation of Olm. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
- Record
CVE-2024-45191- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2024-45191
An issue was discovered in Matrix libolm through 3.2.16. The AES implementation is vulnerable to cache-timing attacks due to use of S-boxes. This is related to software that uses a lookup table for the SubWord step. This refers to the libolm implementation of Olm. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
- Record
DEBIAN-CVE-2024-45191- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2024-45191
An issue was discovered in Matrix libolm through 3.2.16. The AES implementation is vulnerable to cache-timing attacks due to use of S-boxes. This is related to software that uses a lookup table for the SubWord step. This refers to the libolm implementation of Olm. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
- Record
UBUNTU-CVE-2024-45191- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
olmDebian:12 |
All versions, plus listed versions 3.2.13~dfsg-13.2.15~dfsg-13.2.16+dfsg-13.2.16+dfsg-23.2.16+dfsg-33.2.16+dfsg-43.2.16+dfsg-53.2.16+dfsg-6 |
None known |
olmDebian:13 |
All versions, plus listed versions 3.2.16+dfsg-33.2.16+dfsg-43.2.16+dfsg-53.2.16+dfsg-6 |
None known |
olmDebian:14 |
All versions, plus listed versions 3.2.16+dfsg-33.2.16+dfsg-43.2.16+dfsg-53.2.16+dfsg-6 |
None known |
olmUbuntu:18.04:LTS |
All versions, plus listed versions 2.2.2+git20170526.0fd768e+dfsg-1 |
None known |
olmUbuntu:Pro:20.04:LTS |
All versions, plus listed versions 3.1.3+dfsg-23.1.3+dfsg-2build13.1.3+dfsg-2build23.1.3+dfsg-2ubuntu0.1~esm1 |
None known |
olmUbuntu:22.04:LTS |
All versions, plus listed versions 3.2.1~dfsg-7ubuntu23.2.1~dfsg-7ubuntu33.2.10~dfsg-4ubuntu13.2.10~dfsg-5ubuntu13.2.10~dfsg-6ubuntu1 |
None known |
olmUbuntu:24.04:LTS |
All versions, plus listed versions 3.2.13~dfsg-1ubuntu13.2.15~dfsg-1ubuntu13.2.16+dfsg-2 |
None known |
olmUbuntu:25.10 |
All versions, plus listed versions 3.2.16+dfsg-3 |
None known |
olmUbuntu:26.10 |
All versions, plus listed versions 3.2.16+dfsg-53.2.16+dfsg-6 |
None known |
olmUbuntu:26.04:LTS |
All versions, plus listed versions 3.2.16+dfsg-33.2.16+dfsg-5 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2024-45191 is a medium vulnerability (CVSS 5.3) in Matrix Olm, published August 22, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.45%, the 39th percentile. No source names a fixed version.