CVE-2017-16667 : backintime (aka Back in Time) before 1.1.24 did improper escaping/quoting of fil

backintime (aka Back in Time) before 1.1.24 did improper escaping/quoting of file paths used as arguments to the 'notify-send' command, leading to some parts of file paths being executed as shell commands within an os.system call in qt4/plugins/notifyplugin.py. This could allow an attacker to craft an unreadable file with a specific name to run arbitrary shell commands.

Published 2017-11-08 18:29:00

Updated 2019-04-30 16:07:04

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2017-16667

Backintime Project » Backintime
Versions before (<) 1.1.24
cpe:2.3:a:backintime_project:backintime:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2017-16667

EPSS FAQ

0.23%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 60 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2017-16667

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
9.3	HIGH	AV:N/AC:M/Au:N/C:C/I:C/A:C	8.6	10.0	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: Complete Integrity Impact: Complete Availability Impact: Complete
7.8	HIGH	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	1.8	5.9	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2017-16667

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2017-16667

https://security.gentoo.org/glsa/201801-06

Back In Time: Command injection (GLSA 201801-06) — Gentoo security
Third Party Advisory
https://github.com/bit-team/backintime/issues/834

Some 'notify-send' arguments (filepath in errors/warnings) are treated as shell arguments · Issue #834 · bit-team/backintime · GitHub
Third Party Advisory
https://github.com/bit-team/backintime/commit/cef81d0da93ff601252607df3db1a48f7f6f01b3

fix critical bug: shell injection in notify-send (fixes #834) · bit-team/backintime@cef81d0 · GitHub
Patch;Third Party Advisory
https://github.com/bit-team/backintime/releases/tag/v1.1.24

Release Back in Time 1.1.24 · bit-team/backintime · GitHub
Release Notes;Third Party Advisory

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Vulnerability Details : CVE-2017-16667

Products affected by CVE-2017-16667

Exploit prediction scoring system (EPSS) score for CVE-2017-16667

CVSS scores for CVE-2017-16667

CWE ids for CVE-2017-16667

References for CVE-2017-16667