Improper input validation in Wire
CVE-2020-15258
In Wire before 3.20.x, `shell.openExternal` was used without checking the URL. This vulnerability allows an attacker to execute code on the victims machine by sending messages containing links with arbitrary protocols. The victim has to interact with the link and sees the URL that is opened. The issue was patched by implementing a helper function which checks if the URL's protocol is common. If it is common, the URL will be opened externally. If not, the URL will not be opened and a warning appears for the user informing them that a probably insecure URL was blocked from being executed. The issue is patched in Wire 3.20.x. More technical details about exploitation are available in the linked advisory.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.021 (80.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 80.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
- Wire
- Wireapp Wire-Desktop — versions < 3.20.x
Weakness classification (CWE)
References
- github.com/wireapp/wire-desktop/security/advisories/GHSA-5gpx-9976-ggpm (Exploit, Third Party Advisory)
- github.com/wireapp/wire-desktop/commit/b3705fffa75a03f055530f55a754face5ac0623b (Patch, Third Party Advisory)
- benjamin-altpeter.de/shell-openexternal-dangers/ (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-15258?
- CVE-2020-15258 is a high-severity vulnerability in Wire, classified under Improper Input Validation. CVSS score: 8.0/10. Published 2020-10-16.
- How severe is CVE-2020-15258?
- High severity. CVSS v3 base score is 8.0 out of 10.