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CVE-2023-42789

Quick assessment

Affected
Fortinet FortiProxy
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Fortinet FortiOS是美国飞塔（Fortinet）公司的一套专用于FortiGate网络安全平台上的安全操作系统。该系统为用户提供防火墙、防病毒、IPSec/SSLVPN、Web内容过滤和反垃圾邮件等多种安全功能。 Fortinet FortiOS 和 FortiProxy 存在缓冲区错误漏洞，该漏洞源于存在越界写入问题。攻击者利用该漏洞可以通过特制的 HTTP 请求执行未经授权的代码或命令。

CVSS 9.3 · Critical EPSS 3.31% · P89

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 10

VendorProduct Version RangeStatus
Fortinet FortiOS 7.4.0≤ 7.4.1 affected
7.2.0≤ 7.2.5 affected
7.0.0≤ 7.0.12 affected
6.4.0≤ 6.4.14 affected
6.2.0≤ 6.2.15 affected
Fortinet FortiProxy 7.4.0 affected
7.2.0≤ 7.2.6 affected
7.0.0≤ 7.0.12 affected
2.0.0≤ 2.0.13 affected
Fortinet FortiSASE 23.2.b affected
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I. Basic Information for CVE-2023-42789

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A out-of-bounds write vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2.0 through 7.2.5, FortiOS 7.0.0 through 7.0.12, FortiOS 6.4.0 through 6.4.14, FortiOS 6.2.0 through 6.2.15, FortiProxy 7.4.0, FortiProxy 7.2.0 through 7.2.6, FortiProxy 7.0.0 through 7.0.12, FortiProxy 2.0.0 through 2.0.13, FortiSASE 23.2.b allows attacker to execute unauthorized code or commands via specially crafted HTTP requests.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
Fortinet FortiOS 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Fortinet FortiOS是美国飞塔（Fortinet）公司的一套专用于FortiGate网络安全平台上的安全操作系统。该系统为用户提供防火墙、防病毒、IPSec/SSLVPN、Web内容过滤和反垃圾邮件等多种安全功能。 Fortinet FortiOS 和 FortiProxy 存在缓冲区错误漏洞，该漏洞源于存在越界写入问题。攻击者利用该漏洞可以通过特制的 HTTP 请求执行未经授权的代码或命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Fortinet FortiProxy 7.4.0 cpe:2.3:a:fortinet:fortiproxy:7.4.0:*:*:*:*:*:*:*
Fortinet FortiSASE 23.2.b cpe:2.3:a:fortinet:fortisase:23.2.b:*:*:*:*:*:*:*
Fortinet FortiOS 7.4.0 ~ 7.4.1 cpe:2.3:o:fortinet:fortios:7.4.1:*:*:*:*:*:*:*

II. Public POCs for CVE-2023-42789

# POC Description Source Link Shenlong Link
1 Exploit new CVE-2023-42789 Fortinet FortiOS FortiProxy ----> RCE https://github.com/CrimBit/CVE-2023-42789-POC POC Details
2 Check CVE-2023-42789 https://github.com/jhonnybonny/CVE-2023-42789 POC Details
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III. Intelligence Information for CVE-2023-42789

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Vendor Advisories for CVE-2023-42789 (1)

Same Patch Batch · Fortinet · 2024-03-12 · 9 CVEs total

CVE-2023-48788 9.3 CRITICAL Fortinet FortiClientEMS SQL注入漏洞
CVE-2023-47534 8.7 HIGH Fortinet FortiClientEMS 安全漏洞
CVE-2023-42790 7.7 HIGH Fortinet FortiOS 安全漏洞
CVE-2023-36554 7.7 HIGH Fortinet FortiManager 访问控制错误漏洞
CVE-2024-23112 7.2 HIGH Fortinet FortiOS 和 FortiProxy 安全漏洞
CVE-2023-46717 6.7 MEDIUM Fortinet FortiOS 授权问题漏洞
CVE-2023-41842 6.3 MEDIUM Fortinet 多款产品 格式化字符串错误漏洞
CVE-2024-21761 3.9 LOW Fortinet FortiPortal 授权问题漏洞

IV. Related Vulnerabilities

Same product: FortiProxy
Same vendor: Fortinet
Same weakness: CWE-787