Auth bypass in Wire
CVE-2021-41093
Wire is an open source secure messenger. In affected versions if the an attacker gets an old but valid access token they can take over an account by changing the email. This issue has been resolved in version 3.86 which uses a new endpoint which additionally requires an authentication cookie. See wire-ios-sync-engine and wire-ios-transport references. This is the root advisory that pulls the changes together.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.015 (73.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
- Wire
- Wireapp Wire-Ios — versions < 3.86
Weakness classification (CWE)
References
- github.com/wireapp/wire-ios/security/advisories/GHSA-6f4c-phfj-m255 (Third Party Advisory)
- github.com/wireapp/wire-ios-sync-engine/security/advisories/GHSA-w727-5f74-49xj (Broken Link)
- github.com/wireapp/wire-ios-transport/security/advisories/GHSA-p354-6r3m-g4xr (Broken Link)
- github.com/wireapp/wire-server/security/advisories/GHSA-9rm2-w6pq-333m (Third Party Advisory)
- github.com/wireapp/wire-ios/commit/b0e7bb3b13dd8212032cb46e32edf701694687c7 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-41093?
- CVE-2021-41093 is a high-severity vulnerability in Wire, classified under Improper Authorization. CVSS score: 7.4/10. Published 2021-10-04.
- How severe is CVE-2021-41093?
- High severity. CVSS v3 base score is 7.4 out of 10.