Double Free in UPX - CVE-2018-11243
Published: December 28, 2019 / Updated: January 29, 2020
Vulnerability identifier: #VU23829
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/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: CVE-2018-11243
CWE-ID: CWE-415
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: UPX
Affected software:
UPX
UPX
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the PackLinuxElf64::unpack(0 function in p_lx_elf.cpp. A remote attacker can create a specially crafted file, pass it to the application, trigger double free error and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2018-11243
Install update from vendor's website.