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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Fortinet | FortiWeb | 6.4.0 – ≤ 6.4.1, 6.3.0 – ≤ 6.3.16, 6.2.0 – ≤ 6.2.6, 6.1.0 – ≤ 6.1.2, 6.0.0 – ≤ 6.0.7, 5.9.0 – ≤ 5.9.1, 5.8.5 – ≤ 5.8.7, 5.8.0 – ≤ 5.8.3, 5.7.0 – ≤ 5.7.3, 5.6.0 – ≤ 5.6.2, 5.8.0 – < 5.8.*, 5.7.0 – < 5.7.*, 5.6.0 – < 5.6.* | 5.8.* |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
-
3ndorph1n/CVE-2021-42756 ★ 0 · Feb 23, 2023
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- WID-SEC-2023-0439 Fortinet FortiWeb: Schwachstelle ermöglicht Codeausführung BSI CERT-Bund (WID) · Feb 20, 2023