Out-of-bounds read in HAProxy - CVE-2018-20615
Published: January 22, 2019
Vulnerability identifier: #VU17107
CSH Severity: Medium
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:Green
CVE-ID: CVE-2018-20615
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: HAProxy
Affected software:
HAProxy
HAProxy
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to incorrect frame length validation when processing headers with priority flags set. A remote attacker can send a specially crafted HTTP/2 request, trigger our-of-bounds read and crash the affected application.
How to mitigate CVE-2018-20615
Install updates from vendor's website.