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CVE-2017-18266

Good to know:

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Date: May 10, 2018

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.

Language: SHELL

Severity Score

Related Resources (11)

https://usn.ubuntu.com/3650-1/
https://people.canonical.com/~ubuntu-security/cve/CVE-2017-18266
https://cgit.freedesktop.org/xdg/xdg-utils/tree/ChangeLog
https://lists.debian.org/debian-lts-announce/2018/05/msg00014.html
https://cgit.freedesktop.org/xdg/xdg-utils/commit/?id=ce802d71c3466d1dbb24f2fe9b6db82a1f899bcb
https://bugs.freedesktop.org/show_bug.cgi?id=103807
https://nvd.nist.gov/vuln/detail/CVE-2017-18266
https://cgit.freedesktop.org/xdg/xdg-utils/commit/?id=5647afb35e4bcba2060148e1a2a47bc43cc240f2
https://security-tracker.debian.org/tracker/CVE-2017-18266
https://www.debian.org/security/2018/dsa-4211
https://www.mend.io/vulnerability-database/CVE-2017-18266

Severity Score

Weakness Type (CWE)

Injection

CWE-74

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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