#VU51767 Server-Side Request Forgery (SSRF) in Netmask - CVE-2021-29418,CVE-2021-28918
Published: March 29, 2021 / Updated: April 7, 2021
Vulnerability identifier: #VU51767
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2021-29418,CVE-2021-28918
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Netmask
Netmask
Software vendor:
Olivier Poitrey
Olivier Poitrey
Description
The disclosed vulnerability allows a remote attacker to perform SSRF attacks.
The vulnerability exists due to insufficient validation of user-supplied input in octal literals. A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.
Successful exploitation of this vulnerability may allow a remote attacker gain access to intranets, VPNs, containers, adjacent VPC instances, or LAN hosts.
Remediation
Install updates from vendor's website.