A flaw was discovered in the HPACK decoder of HAProxy, before 1.8.14, that is used for HTTP/2. An out-of-bounds read access in hpack_valid_idx() resulted in a remote crash and denial of service.
https://access.redhat.com/errata/RHBA-2019:0028
https://access.redhat.com/errata/RHSA-2018:2882
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14645
https://usn.ubuntu.com/3780-1/
https://www.mail-archive.com/[email protected]/msg31253.html
Source: MITRE
Published: 2018-09-21
Updated: 2019-07-23
Type: CWE-125
Base Score: 5
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 10
Severity: MEDIUM
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 3.9
Severity: HIGH