Off-by-one error in libarchive - #VU23843
Published: December 30, 2019
Vulnerability identifier: #VU23843
CSH Severity: High
CVSS v4 BT: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: N/A
CWE-ID: CWE-193
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to an off-by-one error when in /libarchive/archive_read_disk_entry_from_file.c when working with readlink(2). A remote attacker can pass a specially crafted archive to the application, trigger an off-by-one error and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
libarchive
Remediation
Install updates from vendor's website.
libarchive - update to 3.4.1