Reported

September 29, 2022

Issued

February 2, 2023

Package

matrix-sdk-crypto (crates.io)

Type

Vulnerability

Aliases

• CVE-2022-39252
• GHSA-vp68-2wrm-69qm

References

• https://github.com/matrix-org/matrix-rust-sdk/commit/093fb5d0aa21c0b5eaea6ec96b477f1075271cbb
• https://github.com/matrix-org/matrix-rust-sdk/commit/41449d2cc360e347f5d4e1c154ec1e3185f11acd

CVSS Score

7.5 HIGH

CVSS Details

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Patched

• >=0.6.0

Description

When the user receives a forwarded room key, the software accepts it without checking who the room key came from. This allows homeservers to try to insert room keys of questionable validity, potentially mounting an impersonation attack.

Advisory available under CC0-1.0 license.