CVE-2017-18266 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Severity

68%

Complexity

86%

Confidentiality

106%

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.

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 3.0 Base Score 8.8. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

CVSS 2.0 Base Score 6.8. CVSS Attack Vector: network. CVSS Attack Complexity: medium. CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:P).

Overview

First reported 6 years ago

2018-05-10 14:29:00

Last updated 6 years ago

2018-06-14 13:33:00

Affected Software

Debian Linux 7.0

7.0

Debian Linux 8.0 (Jessie)

8.0

Debian Linux 9.0

9.0

Canonical Ubuntu Linux 14.04 LTS (Long-Term Support)

14.04

Canonical Ubuntu Linux 16.04 LTS (Long-Term Support)

16.04

Canonical Ubuntu Linux 17.10

17.10

Canonical Ubuntu Linux 18.04 LTS Edition

18.04

References

https://bugs.freedesktop.org/show_bug.cgi?id=103807

Issue Tracking, Patch

https://cgit.freedesktop.org/xdg/xdg-utils/commit/?id=5647afb35e4bcba2060148e1a2a47bc43cc240f2

Release Notes

https://cgit.freedesktop.org/xdg/xdg-utils/commit/?id=ce802d71c3466d1dbb24f2fe9b6db82a1f899bcb

Patch

https://cgit.freedesktop.org/xdg/xdg-utils/tree/ChangeLog

Release Notes

[debian-lts-announce] 20180525 [SECURITY] [DLA 1384-1] xdg-utils security update

Third Party Advisory

USN-3650-1

Third Party Advisory

DSA-4211

Third Party Advisory

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