SB2017082912 - SUSE Linux update for quagga
Published: August 29, 2017
Security Bulletin ID
SB2017082912
Severity
High
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Buffer overflow (CVE-ID: CVE-2016-1245)
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
It was discovered that the zebra daemon in Quagga before 1.0.20161017 suffered from a stack-based buffer overflow when processing IPv6 Neighbor Discovery messages. The root cause was relying on BUFSIZ to be compatible with a message size; however, BUFSIZ is system-dependent.
2) Memory corruption (CVE-ID: CVE-2017-5495)
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.
Remediation
Install update from vendor's website.