CVE-2020-15258
This vulnerability allows an attacker to execute code on the victims machine by sending messages containing links with arbitrary protocols.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.08%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 8.0 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 2.08% probability · 81th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- wire/wire
- Source
- security-advisories@github.com
References
- https://benjamin-altpeter.de/shell-openexternal-dangers/Exploit, Third Party Advisory
- https://github.com/wireapp/wire-desktop/commit/b3705fffa75a03f055530f55a754face5ac0623bPatch, Third Party Advisory
- https://github.com/wireapp/wire-desktop/security/advisories/GHSA-5gpx-9976-ggpmExploit, Third Party Advisory
- https://benjamin-altpeter.de/shell-openexternal-dangers/Exploit, Third Party Advisory
- https://github.com/wireapp/wire-desktop/commit/b3705fffa75a03f055530f55a754face5ac0623bPatch, Third Party Advisory
- https://github.com/wireapp/wire-desktop/security/advisories/GHSA-5gpx-9976-ggpmExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.