SB2019072704 - Debian update for patch

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Main Vulnerability Database SB2019072704

SB2019072704 - Debian update for patch

Published: July 27, 2019

Security Bulletin ID SB2019072704
Severity
High
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 33% Low 67%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Improper Link Resolution Before File Access ('Link Following') (CVE-ID: CVE-2019-13636)

The vulnerability allows a local user to gain unauthorized access to files or directories on a targeted system.

The vulnerability exists due to the software mishandles the following of symlinks in certain cases other than input files in the "inp.c" and "util.c" files. A local authenticated user can gain unauthorized access to read or modify files and directories on a targeted system.

2) OS Command Injection (CVE-ID: CVE-2019-13638)

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

The vulnerability exists due to insufficient validation of ed style diff payload with shell metacharacters in patch files. A remote attacker can trick the victim to use a specially crafted patch file and execute arbitrary OS commands.


3) Improper input validation (CVE-ID: CVE-2018-1000156)

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

The weakness exists in the EDITOR_PROGRAM invocation due to improper input validation. A remote attacker can send a specially crafted patch file and execute arbitrary code.

Successful exploitation of the vulnerability may result in system compromise.


Remediation

Install update from vendor's website.

References