Vulnerability identifier: #VU16548
Vulnerability risk: Low
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-125
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
HAProxy
Server applications /
IDS/IPS systems, Firewalls and proxy servers
Vendor: HAProxy
Description
The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.
The vulnerability exists due to improper checking of valid DNS responses by the dns_validate_dns_response function, as defined in the dns.c source code file. A remote attacker can send a specially crafted request that submits malicious input, trigger an out-of-bounds read access and obtain sensitive information.
Mitigation
Update to version 1.18.15.
Vulnerable software versions
HAProxy: 1.8.0 - 1.8.14, 1.7.0 - 1.7.10, 1.6.0 - 1.6.14, 1.5.0 - 1.5.19, 1.4.0 - 1.4.27, 1.3.0 - 1.3.28.14, 1.2.0 - 1.2.18, 1.1.0 - 1.1.34, 1.0.0 - 1.0.2
External links
http://www.haproxy.org/download/1.8/src/CHANGELOG
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.