CVE-2017-18266

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.

Category

8.8
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.38% Top 25%
Vendor Advisory ubuntu.com Vendor Advisory debian.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://cgit.freedesktop.org/xdg/xdg-utils/commit/?id=ce802d71c3466d1dbb24f2fe9b6db82a1f899bcb patch
https://cgit.freedesktop.org/xdg/xdg-utils/tree/ChangeLog release notes
https://usn.ubuntu.com/3650-1/ third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2018/05/msg00014.html third party advisory mailing list
https://www.debian.org/security/2018/dsa-4211 third party advisory vendor advisory
https://bugs.freedesktop.org/show_bug.cgi?id=103807 patch issue tracking
https://cgit.freedesktop.org/xdg/xdg-utils/commit/?id=5647afb35e4bcba2060148e1a2a47bc43cc240f2 release notes

Frequently Asked Questions

What is the severity of CVE-2017-18266?
CVE-2017-18266 has been scored as a high severity vulnerability.
How to fix CVE-2017-18266?
To fix CVE-2017-18266, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-18266 being actively exploited in the wild?
It is possible that CVE-2017-18266 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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