CVE-2017-18266

moderate-risk
Published 2018-05-10

The open_envvar function in xdg-open in xdg-utils before 1.1.3 does not validate strings before launching the program specified by the BROWSER environment variable, which might allow remote attackers to conduct argument-injection attacks via a crafted URL, as demonstrated by %s in this environment variable.

Do I need to act?

~
1.0% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (8)

Xdg-Utils

Affected Vendors

Debian Canonical Freedesktop

References (14)

Issue Tracking https://bugs.freedesktop.org/show_bug.cgi?id=103807
Release Notes https://cgit.freedesktop.org/xdg/xdg-utils/commit/?id=5647afb35e4bcba2060148e1a2...
Patch https://cgit.freedesktop.org/xdg/xdg-utils/commit/?id=ce802d71c3466d1dbb24f2fe9b...
Release Notes https://cgit.freedesktop.org/xdg/xdg-utils/tree/ChangeLog
Third Party Advisory https://lists.debian.org/debian-lts-announce/2018/05/msg00014.html
Third Party Advisory https://usn.ubuntu.com/3650-1/
Third Party Advisory https://www.debian.org/security/2018/dsa-4211
Issue Tracking https://bugs.freedesktop.org/show_bug.cgi?id=103807
Release Notes https://cgit.freedesktop.org/xdg/xdg-utils/commit/?id=5647afb35e4bcba2060148e1a2...
Patch https://cgit.freedesktop.org/xdg/xdg-utils/commit/?id=ce802d71c3466d1dbb24f2fe9b...
Release Notes https://cgit.freedesktop.org/xdg/xdg-utils/tree/ChangeLog
Third Party Advisory https://lists.debian.org/debian-lts-announce/2018/05/msg00014.html
Third Party Advisory https://usn.ubuntu.com/3650-1/
Third Party Advisory https://www.debian.org/security/2018/dsa-4211
47
/ 100
moderate-risk
Severity 30/34 · Critical
Exploitability 3/34 · Minimal
Exposure 14/34 · Moderate