CVE-2020-27853 Information

Description

Wire before 2020-10-16 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a format string. This affects Wire AVS (Audio Video and Signaling) 5.3 through 6.x before 6.4 the Wire Secure Messenger application before 3.49.918 for Android and the Wire Secure Messenger application before 3.61 for iOS. This occurs via the value parameter to sdp_media_set_lattr in peerflow/sdp.c.

CVSS Vector

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

Reference

http://github.security.telekom.com/2020/11/wire-secure-messenger-format-string-vulnerability.html https://github.com/wireapp/wire-audio-video-signaling/issues/23issuecomment-710075689

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8