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

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CVE-2021-42756

Severity CVSS v4.0:
Pending analysis
Type:
CWE-787 Out-of-bounds Write
Publication date:
16/02/2023
Last modified:
07/11/2023

Description

Multiple stack-based buffer overflow vulnerabilities [CWE-121] in the proxy daemon of FortiWeb 5.x all versions, 6.0.7 and below, 6.1.2 and below, 6.2.6 and below, 6.3.16 and below, 6.4 all versions may allow an unauthenticated remote attacker to achieve arbitrary code execution via specifically crafted HTTP requests.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x
9.80
Severity 3.x
CRITICAL

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:* 5.6.0 (including) 6.0.8 (excluding)
cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:* 6.1.0 (including) 6.1.3 (excluding)
cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:* 6.2.0 (including) 6.2.7 (excluding)
cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:* 6.3.0 (including) 6.3.17 (excluding)
cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:* 6.4.0 (including) 6.4.2 (including)

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


References to Advisories, Solutions, and Tools