Filtered by vendor Matrix Subscriptions
Filtered by product Element Subscriptions
Total 2 CVE
CVE Vendors Products Updated CVSS v3.1
CVE-2021-44538 4 Cinny Project, Debian, Matrix and 1 more 6 Cinny, Debian Linux, Element and 3 more 2024-11-21 9.8 Critical
The olm_session_describe function in Matrix libolm before 3.2.7 is vulnerable to a buffer overflow. The Olm session object represents a cryptographic channel between two parties. Therefore, its state is partially controllable by the remote party of the channel. Attackers can construct a crafted sequence of messages to manipulate the state of the receiver's session in such a way that, for some buffer sizes, a buffer overflow happens on a call to olm_session_describe. Furthermore, safe buffer sizes were undocumented. The overflow content is partially controllable by the attacker and limited to ASCII spaces and digits. The known affected products are Element Web And SchildiChat Web.
CVE-2021-40824 1 Matrix 2 Element, Matrix-android-sdk2 2024-11-21 5.9 Medium
A logic error in the room key sharing functionality of Element Android before 1.2.2 and matrix-android-sdk2 (aka Matrix SDK for Android) before 1.2.2 allows a malicious Matrix homeserver present in an encrypted room to steal room encryption keys (via crafted Matrix protocol messages) that were originally sent by affected Matrix clients participating in that room. This allows the attacker to decrypt end-to-end encrypted messages sent by affected clients.