Use-after-free in Binutils - CVE-2018-20623
Published: January 2, 2019
Vulnerability identifier: #VU16781
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2018-20623
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: GNU
Affected software:
Binutils
Binutils
Detailed vulnerability description
The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code.
The vulnerability exists due to use-after-free in the error function in elfcomm.c when called from the process_archive function in readelf.c. A remote attacker can supply a specially crafted ELF file, trigger heap-based buffer overflow and cause the service to crash or execute arbitrary code with elevated privileges.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
How to mitigate CVE-2018-20623
Install updates from vendor's website.