XSS in Wire Wire-Webapp
CVE-2021-32683
wire-webapp is the web version of Wire, an open-source messenger. A cross-site scripting vulnerability exists in wire-webapp prior to version 2021-06-01-production.0. If a user is instructed to open an image in a new tab (right click -> open in new tab, or copy the URL and paste it in the URL bar), an the image payload is executed on the domain hosting the app (app.wire.com). In particular, if an image contains malicious code in addition to the actual picture, this code is executed on app.wire.com. This allows the attacker to fully control the user account. The vulnerability was patched in version 2021-06-01-production.0. As a workaround, users should not try to open image URLs.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (55.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Wire Wire-Webapp
- Wireapp Wire-Webapp — versions < 2021-06-01-production.0
Weakness classification (CWE)
References
- github.com/wireapp/wire-webapp/security/advisories/GHSA-382j-mmc8-m5rw (Patch, Third Party Advisory)
- github.com/wireapp/wire-webapp/commit/056e39d327bb10c1b0958dfbea0c39752692a1b0 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-32683?
- CVE-2021-32683 is a high-severity vulnerability in Wire Wire-Webapp, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2021-06-15.
- How severe is CVE-2021-32683?
- High severity. CVSS v3 base score is 8.8 out of 10.