Buffer overflow in Serv-U FTP Server - CVE-2021-35211
Published: July 13, 2021 / Updated: January 16, 2022
Vulnerability identifier: #VU54677
CSH Severity: Critical
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:A/U:Red
CVE-ID: CVE-2021-35211
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: SolarWinds
Affected software:
Serv-U FTP Server
Serv-U FTP Server
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. A remote attacker can send a specially crafted request to the Serv-U server, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Note, the vulnerability is being actively exploited in the wild.
How to mitigate CVE-2021-35211
Install updates from vendor's website.