Executive Summary

Summary
Title util-linux: User-assisted execution of arbitrary code
Informations
Name GLSA-201803-02 First vendor Publication 2018-03-07
Vendor Gentoo Last vendor Modification 2018-03-07
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 7.2 Attack Range Local
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

A vulnerability was discovered in util-linux, which could potentially lead to the execution of arbitrary code.

Background

util-linux is a suite of Linux programs including mount and umount, programs used to mount and unmount filesystems.

Description

It was discovered that the umount bash-completion as provided by util-linux does not escap mount point paths.

Impact

An attacker controlling a volume label could entice a user with privileges to mount/umount filesystems to use umount command with auto completion, possibly resulting in execution of arbitrary code with root privileges.

Workaround

Disable Bash-completion or remove
"/usr/share/bash-completion/completions/umount".

Resolution

All util-linux users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-apps/util-linux-2.30.2-r1"

References

[ 1 ] CVE-2018-7738 : https://nvd.nist.gov/vuln/detail/CVE-2018-7738

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

https://security.gentoo.org/glsa/201803-02

Original Source

Url : http://security.gentoo.org/glsa/glsa-201803-02.xml

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 5

Nessus® Vulnerability Scanner

Date Description
2018-07-24 Name : The remote PhotonOS host is missing multiple security updates.
File : PhotonOS_PHSA-2018-2_0-0037.nasl - Type : ACT_GATHER_INFO
2018-03-14 Name : The remote Fedora host is missing a security update.
File : fedora_2018-668664ba84.nasl - Type : ACT_GATHER_INFO
2018-03-12 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-4134.nasl - Type : ACT_GATHER_INFO
2018-03-08 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201803-02.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
Date Informations
2018-03-30 00:21:23
  • Multiple Updates
2018-03-07 21:19:52
  • First insertion