#VU16547 Infinite loop in HAProxy - CVE-2018-20103
Published: December 14, 2018 / Updated: December 14, 2018
Vulnerability identifier: #VU16547
Vulnerability risk: Low
CVSSv4.0: 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-2018-20103
CWE-ID: CWE-835
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
HAProxy
HAProxy
Software vendor:
HAProxy
HAProxy
Description
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists in the dns_read_name() function, as defined in the src/dns.c source code file due to an error when processing malicious input. A remote attacker can send a specially crafted packet that submits malicious input, make a compressed pointer point to itself trigger an infinite loop and cause the affected software to crash.
Remediation
Update to version 1.18.15.