SB2017012327 - Memory corruption in quagga (Alpine package)
Published: January 23, 2017
Security Bulletin ID
SB2017012327
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Memory corruption (CVE-ID: CVE-2017-5495)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 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
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.
References
- https://git.alpinelinux.org/aports/commit/?id=229843962a976cdf2b578f422f4d8637fe4132fd
- https://git.alpinelinux.org/aports/commit/?id=c00451450e78759def5a5ee4cba58a9b2b5c7042
- https://git.alpinelinux.org/aports/commit/?id=ae75e0ae11cd230df0320590974156eb517cc2e0
- https://git.alpinelinux.org/aports/commit/?id=ec34b88925091c8b60fce522f2cf672dbbef689e