Vulnerability in Wire
CVE-2020-27853
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.039 (90.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.039 · newest: 0.039 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/wireapp/wire-audio-video-signaling/issues/23 (Exploit, Third Party Advisory)
- github.security.telekom.com/2020/11/wire-secure-messenger-format-string-vulnera… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-27853?
- CVE-2020-27853 is a critical-severity vulnerability in Wire, classified under Use of Externally-Controlled Format String. CVSS score: 9.8/10. Published 2020-10-27.
- How severe is CVE-2020-27853?
- Critical severity. CVSS v3 base score is 9.8 out of 10.