libolm3: Matrix libolm before 3.2.3 allows a malicious Matrix homeserver to crash a client (while it is attempting to retrieve...
CVE-2021-34813 is fixed in 2 products on 1 platform, first by libolm3 3.1.3+dfsg-2ubuntu0.1~esm1, released June 16, 2021. It is not reported as exploited. Patch Radar priority: Routine.
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 olm_pk_decrypt has a stack-based buffer overflow. Remote code execution might be possible for some nonstandard build configurations.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libolm3 · Ubuntu 20.04 LTS (focal) | 3.1.3+dfsg-2ubuntu0.1~esm1 | libolm3 3.1.3+dfsg-2ubuntu0.1~esm1 | Jun 16, 2021 |
| python3-olm · Ubuntu 20.04 LTS (focal) | 3.1.3+dfsg-2ubuntu0.1~esm1 | python3-olm 3.1.3+dfsg-2ubuntu0.1~esm1 | Jun 16, 2021 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.