Vulnerability CVE-2017-18266
Published: 2018-05-10

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.

Type:

CWE-74

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.8/10
6.4/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Debian -> Debian linux 
Canonical -> Ubuntu linux 

 References:
https://bugs.freedesktop.org/show_bug.cgi?id=103807
https://cgit.freedesktop.org/xdg/xdg-utils/commit/?id=5647afb35e4bcba2060148e1a2a47bc43cc240f2
https://cgit.freedesktop.org/xdg/xdg-utils/commit/?id=ce802d71c3466d1dbb24f2fe9b6db82a1f899bcb
https://cgit.freedesktop.org/xdg/xdg-utils/tree/ChangeLog
https://lists.debian.org/debian-lts-announce/2018/05/msg00014.html
https://usn.ubuntu.com/3650-1/
https://www.debian.org/security/2018/dsa-4211
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