SB2018022111 - Privilege escalation in GNU Sharutils

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Main Vulnerability Database SB2018022111

SB2018022111 - Privilege escalation in GNU Sharutils

Published: February 21, 2018

Security Bulletin ID SB2018022111
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Buffer overflow (CVE-ID: CVE-2018-1000097)

CWE-ID: CWE-120 - Buffer overflow

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local unauthenticated attacker to gain elevated privileges on the target system.

The weakness exists in the looks_like_c_code function due to insufficient validation of user-supplied input. A local attacker can send a specially crafted file, trick the victim into running an unshar command, trigger buffer overflow and execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.


Remediation

Install update from vendor's website.

References