Skip to main content

Fortiadc CVE-2023-29177

MEDIUM
Classic Buffer Overflow (CWE-120)
2023-11-14 psirt@fortinet.com
6.7
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Buffer copy size validation
MITRE ATT&CK

1 technique across 1 tactic: Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 6.7 (MEDIUM). Attack characteristics: local attack vector, low complexity, high privileges required, no user interaction not required.

Exploit ScenarioDerived

A local attacker with access to the system could overflow a buffer to corrupt adjacent memory.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.2% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAI

Multiple buffer copy without checking size of input ('classic buffer overflow') vulnerabilities [CWE-120] in FortiADC version 7.2.0 and before 7.1.2 & FortiDDoS-F version 6.5.0 and before 6.4.1. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. Multiple buffer copy without checking size of input ('classic buffer overflow') vulnerabilities [CWE-120] in FortiADC version 7.2.0 and before 7.1.2 & FortiDDoS-F version 6.5.0 and before 6.4.1 allows a privileged attacker to execute arbitrary code or commands via specifically crafted CLI requests. Affected products include: Fortinet Fortiadc, Fortinet Fortiddos-F. Version information: version 7.2.0.

Know when Fortiadc gets its next vulnerability

  • Watch products and get an email when something new is published
  • Check this CVE against your own stack and servers
  • Exploit and PoC references, threat intelligence from 22 sources

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 6.7 MEDIUM
AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionNVD

Multiple buffer copy without checking size of input ('classic buffer overflow') vulnerabilities [CWE-120] in FortiADC version 7.2.0 and before 7.1.2 & FortiDDoS-F version 6.5.0 and before 6.4.1 allows a privileged attacker to execute arbitrary code or commands via specifically crafted CLI requests.

Threat Intelligence Overview

EPSS Score
0.2%
Top 84% exploitable
Data Quality
2 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation· derived
None
System Exposure· derived
Small
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

34
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +34
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)NVD

cpe:2.3:a:fortinet:fortiadc:*:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiadc:5.2.0:-:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiadc:5.3.0:-:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiadc:5.4.0:-:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiadc:6.0.0:-:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiadc:6.1.0:-:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiadc:6.2.0:-:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiadc:7.0.0:-:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiadc:7.2.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiddos-f:*:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiddos-f:*:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiddos-f:6.2.0:-:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiddos-f:6.3.0:-:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiddos-f:6.5.0:*:*:*:*:*:*:*
CVE-2022-38381 CRITICAL
9.8 Nov 02

An improper handling of malformed request vulnerability [CWE-228] exists in FortiADC 5.0 all versions, 6.0.0 all version

CVE-2023-25603 CRITICAL
9.1 Nov 14

A permissive cross-domain policy with untrusted domains vulnerability in Fortinet FortiADC 7.1.0 - 7.1.1, FortiDDoS-F 6.

CVE-2023-26205 HIGH
8.8 Nov 14

An improper access control vulnerability [CWE-284] in FortiADC automation feature 7.1.0 through 7.1.2, 7.0 all versions,

CVE-2022-33875 HIGH
8.8 Dec 06

An improper neutralization of special elements used in an SQL Command ('SQL Injection') vulnerability in Fortinet FortiA

CVE-2022-26120 HIGH
8.8 Jul 18

Multiple improper neutralization of special elements used in an SQL Command ('SQL Injection') vulnerabilities [CWE-89] i

CVE-2023-25607 HIGH
7.8 Oct 10

An improper neutralization of special elements used in an OS Command ('OS Command Injection') vulnerability [CWE-78 ] in

CVE-2023-28000 HIGH
7.8 Jun 13

An improper neutralization of special elements used in an OS command vulnerability [CWE-78] in FortiADC CLI 7.1.0, 7.0.0

CVE-2023-26210 HIGH
7.8 Jun 13

Multiple improper neutralization of special elements used in an os command ('OS Command Injection') vulnerabilties [CWE-

CVE-2023-27999 HIGH
7.8 May 03

An improper neutralization of special elements used in an OS command vulnerability [CWE-78] in FortiADC 7.2.0, 7.1.0 thr

CVE-2022-22299 HIGH
7.8 Aug 05

A format string vulnerability [CWE-134] in the command line interpreter of FortiADC version 6.0.0 through 6.0.4, FortiAD

CVE-2025-31104 HIGH
7.2 Jun 10

FortiADC versions 6.1 through 7.6.1 contain an OS command injection vulnerability (CWE-78) that allows authenticated att

CVE-2023-27993 HIGH
7.1 May 03

A relative path traversal [CWE-23] in Fortinet FortiADC version 7.2.0 and before 7.1.1 allows a privileged attacker to d

References

Advisories & patches

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy