CVE-2018-1000097

Publication date 12 March 2018

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Sharutils sharutils (unshar command) version 4.15.2 contains a Buffer Overflow vulnerability in Affected component on the file unshar.c at line 75, function looks_like_c_code. Failure to perform checking of the buffer containing input line. that can result in Could lead to code execution. This attack appear to be exploitable via Victim have to run unshar command on a specially crafted file..

Status

Show unmaintained releases

Package	Ubuntu Release	Status
sharutils	17.10 artful	Fixed 1:4.15.2-2ubuntu0.1
	16.04 LTS xenial	Fixed 1:4.15.2-1ubuntu0.1
	14.04 LTS trusty	Fixed 1:4.14-1ubuntu1.1

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
sharutils	Other: http://lists.gnu.org/archive/html/bug-gnu-utils/2018-02/msg00005.html

Severity score breakdown

Parameter	Value
Base score	7.8 · High
Attack vector	Local
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-3605-1
Sharutils vulnerability
22 March 2018