SB2019081903 - Ubuntu update for KConfig and KDE libraries

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Main Vulnerability Database SB2019081903

SB2019081903 - Ubuntu update for KConfig and KDE libraries

Published: August 19, 2019

Security Bulletin ID SB2019081903
Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Medium 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) OS Command Injection (CVE-ID: CVE-2019-14744)

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation when processing .desktop and .directory files within the KConfigGroup::readEntry() function. A remote attacker can create a specially crafted file or folder, trick the user into opening it and execute arbitrary OS commands with privileges of the current user.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system. 

Examples:

1) payload.desktop

[Desktop Entry]
Icon[$e]=$(echo${IFS}0>~/Desktop/zero.lol&)

2) .directory

[Desktop Entry]
Type=Directory
Icon[$e]=$(echo${IFS}0>~/Desktop/zero.lol&)

2) Path traversal (CVE-ID: CVE-2016-6232)

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in KArchive before 5.24, as used in KDE Frameworks. A remote attacker can trick the victim to open a specially crafted archive and data write to arbitrary files via a ./ (dot dot slash) in a filename, related to KNewsstuff downloads.


Remediation

Install update from vendor's website.

References