Heap-based buffer overflow in Exim - CVE-2020-28013
Published: May 4, 2021
Vulnerability identifier: #VU52858
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-28013
CWE-ID: CWE-122
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Exim
Affected software:
Exim
Exim
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in parse_fix_phrase() function. A local user can trigger heap-based buffer overflow and execute arbitrary code with elevated privileges.
How to mitigate CVE-2020-28013
Install updates from vendor's website.