Critical severity · published Oct 4, 2021
CVE-2021-41093
Wire is an open source secure messenger
9.8
CVSS
1.5%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 74% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WI
Wire · Wire
before 3.86 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-41093
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-41093
Broken Link
https://github.com/wireapp/wire-ios-sync-engine/security/advisories/GHSA-w727-5f74-49xj
Broken Link
https://github.com/wireapp/wire-ios-transport/security/advisories/GHSA-p354-6r3m-g4xr
Patch
https://github.com/wireapp/wire-ios/commit/b0e7bb3b13dd8212032cb46e32edf701694687c7
Third Party Advisory
https://github.com/wireapp/wire-ios/security/advisories/GHSA-6f4c-phfj-m255
Third Party Advisory
https://github.com/wireapp/wire-server/security/advisories/GHSA-9rm2-w6pq-333m
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