Out-of-bounds write in Cherokee webserver - CVE-2019-20800
Published: May 18, 2020 / Updated: December 28, 2020
Vulnerability identifier: #VU49163
CSH Severity: High
CVSSv4.0: 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-2019-20800
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Cherokee webserver
Cherokee webserver
Software vendor:
Cherokee-project
Cherokee-project
Description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing untrusted input within the cherokee_handler_cgi_add_env_pair() function in handler_cgi.c. A remote attacker can send a specially crafted HTTP GET request with multiple headers to the server, trigger out-of-bounds write and execute arbitrary code on the target system.
Remediation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.