Memory corruption in Quagga - CVE-2017-5495

 

Memory corruption in Quagga - CVE-2017-5495

Published: February 16, 2018 / Updated: February 19, 2018


Vulnerability identifier: #VU10615
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-5495
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: quagga.net
Affected software:
Quagga

Detailed vulnerability description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to unbounded memory allocation in the telnet 'vty' CLI. A remote attacker able to connect to the TCP ports can  send very long strings without a newline, cause the Quagga daemon to allocate unbounded memory and system crash.

How to mitigate CVE-2017-5495

Update to version 1.1.

Sources