Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2018-20615

Severity CVSS v4.0:
Pending analysis
Type:
CWE-125 Out-of-bounds Read
Publication date:
21/03/2019
Last modified:
17/06/2026

Description

An out-of-bounds read issue was discovered in the HTTP/2 protocol decoder in HAProxy 1.8.x and 1.9.x through 1.9.0 which can result in a crash. The processing of the PRIORITY flag in a HEADERS frame requires 5 extra bytes, and while these bytes are skipped, the total frame length was not re-checked to make sure they were present in the frame.

Impact

Vector 3.x
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:* 1.8.0 (including) 1.8.19 (including)
cpe:2.3:a:haproxy:haproxy:1.9.0:-:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:1.9.0:dev0:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:1.9.0:dev1:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:1.9.0:dev10:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:1.9.0:dev11:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:1.9.0:dev2:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:1.9.0:dev3:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:1.9.0:dev4:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:1.9.0:dev5:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:1.9.0:dev6:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:1.9.0:dev7:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:1.9.0:dev8:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:1.9.0:dev9:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools