Vulnerability in Freedesktop Xdg-Utils
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 allow remote attackers to conduct argument-injection attacks via a crafted URL, as demonstrated by %s in this environment variable.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.025 (83.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 83.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: -0.000
Affected products
- Freedesktop Xdg-Utils
- Canonical Ubuntu Linux — versions 14.04, 16.04, 17.10
- Debian Linux — versions 7.0, 8.0, 9.0
Weakness classification (CWE)
References
- cgit.freedesktop.org/xdg/xdg-utils/commit/ (Patch)
- cgit.freedesktop.org/xdg/xdg-utils/tree/ChangeLog (Release Notes)
- usn.ubuntu.com/3650-1/ (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/05/msg00014.html (mailing-list, Third Party Advisory)
- www.debian.org/security/2018/dsa-4211 (vendor-advisory, Third Party Advisory)
- bugs.freedesktop.org/show_bug.cgi (Patch, Issue Tracking)
- cgit.freedesktop.org/xdg/xdg-utils/commit/ (Release Notes)
Frequently asked questions
- What is CVE-2017-18266?
- CVE-2017-18266 is a high-severity vulnerability in Freedesktop Xdg-Utils, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 8.8/10. Published 2018-05-10.
- How severe is CVE-2017-18266?
- High severity. CVSS v3 base score is 8.8 out of 10.