#VU52868 Input validation error in Exim - CVE-2020-28026
Published: May 4, 2021
Vulnerability identifier: #VU52868
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-28026
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Exim
Exim
Software vendor:
Exim
Exim
Description
The vulnerability allows a remote attacker to bypass implemented security restrictions
The vulnerability exists due to insufficient validation of user-supplied input in the spool_read_header() function. A remote attacker can inject lines and manipulate mail queue.
Remediation
Install updates from vendor's website.