CVE-2020-37119
CRITICAL Exploitation: PoC
9.8
CVSS 3.1
Description
Nsauditor 3.0.28 and 3.2.1.0 contains a buffer overflow vulnerability in the DNS Lookup tool that allows attackers to execute arbitrary code by overwriting memory. Attackers can craft a malicious DNS query payload to trigger a three-byte overwrite, bypass ASLR, and execute shellcode through a carefully constructed exploit.
Metadata
Severity & Metrics
9.8
CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC — CISA Coordinator
Affected products (1)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| Nsasoft | Nsauditor | — | 3.2.1.0, 3.0.28 |
Weakness (CWE)
| CWE | Source | Description |
|---|---|---|
| CWE-121 | cna | Stack-based Buffer Overflow |
CVSS scores (2)
| Score | Severity | Version | Source | Vector |
|---|---|---|---|---|
| 9.8 | CRITICAL | 3.1 | cna | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 8.4 | HIGH | 4.0 | cna | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
References (3)
- ExploitDB-48350 https://www.exploit-db.com/exploits/48350
- Nsauditor Homepage https://www.nsauditor.com/
- VulnCheck Advisory: Nsauditor 3.2.1.0 - Buffer Overflow (SEH+ASLR bypass (3 bytes overwrite)) https://www.vulncheck.com/advisories/nsauditor-buffer-overflow-sehaslr-bypass-bytes-overwrite