High severity · published May 10, 2018
CVE-2017-18266
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…
8.8
CVSS
2.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.4% · higher than 84% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
7.0; 8.0; 9.0 · source: NVD
UL
Ubuntu Linux · Canonical
14.04; 16.04; 17.10; 18.04 · source: NVD
XD
Xdg-utils · Freedesktop
before 1.1.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-18266
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-18266
Issue Tracking
https://bugs.freedesktop.org/show_bug.cgi?id=103807
Release Notes
https://cgit.freedesktop.org/xdg/xdg-utils/commit/?id=5647afb35e4bcba2060148e1a2a47bc43cc240f2
Patch
https://cgit.freedesktop.org/xdg/xdg-utils/commit/?id=ce802d71c3466d1dbb24f2fe9b6db82a1f899bcb
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/
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