Fortinet FortiOS 6.0-7.4 OOB Write: Unauth Code Exec (CVE-2024-21762)
CVE-2024-21762 Published on February 9, 2024

A out-of-bounds write in Fortinet FortiOS versions 7.4.0 through 7.4.2, 7.2.0 through 7.2.6, 7.0.0 through 7.0.13, 6.4.0 through 6.4.14, 6.2.0 through 6.2.15, 6.0.0 through 6.0.17, FortiProxy versions 7.4.0 through 7.4.2, 7.2.0 through 7.2.8, 7.0.0 through 7.0.14, 2.0.0 through 2.0.13, 1.2.0 through 1.2.13, 1.1.0 through 1.1.6, 1.0.0 through 1.0.7 allows attacker to execute unauthorized code or commands via specifically crafted requests

NVD

Known Exploited Vulnerability

This Fortinet FortiOS Out-of-Bound Write Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Fortinet FortiOS contains an out-of-bound write vulnerability that allows a remote unauthenticated attacker to execute code or commands via specially crafted HTTP requests.

The following remediation steps are recommended / required by February 16, 2024: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Vulnerability Analysis

CVE-2024-21762 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors in an automatable fashion. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

What is a Memory Corruption Vulnerability?

The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.

CVE-2024-21762 has been classified to as a Memory Corruption vulnerability or weakness.


Products Associated with CVE-2024-21762

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2024-21762 are published in these products:

Fortinet FortiOS
 
Fortinet FortiProxy
 

Affected Versions

Fortinet FortiProxy: Fortinet FortiOS: fortinet fortiproxy: fortinet fortiproxy: fortinet fortiproxy: fortinet fortiproxy: fortinet fortios: fortinet fortios: fortinet fortios: fortinet fortios: fortinet fortios:

Exploit Probability

EPSS
92.94%
Percentile
99.77%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.