CVE-2021-26109

Published: Dec 8, 2021Modified: Nov 21, 2024

9.8

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability: 3.9 / Impact: 5.9

Source: NVD

Description

An integer overflow or wraparound vulnerability in the memory allocator of SSLVPN in FortiOS before 7.0.1 may allow an unauthenticated attacker to corrupt control data on the heap via specifically crafted requests to SSLVPN, resulting in potentially arbitrary code execution.

Affected (4)

Products: Fortinet: Fortios

1 product

Configuration A

4 vulnerable

Vulnerable Software	Affected Versions
Fortinet Fortios	From 6.0.0 to 6.0.12
Fortinet Fortios	From 6.2.0 to 6.2.9
Fortinet Fortios	From 6.4.0 to 6.4.5
Fortinet Fortios	Version 7.0.0

Related CWEs

Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

References (2)

https://fortiguard.com/advisory/FG-IR-21-049

Source: psirt@fortinet.com

PatchVendor Advisory

https://fortiguard.com/advisory/FG-IR-21-049

Source: af854a3a-2127-422b-91ae-364da2661108

PatchVendor Advisory

Timeline

No history available yet.