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Public proof of concept

CVE-2022-40870

A public proof of concept exists; no exploitation attested.

  • Published2022-11-23
  • WeaknessCWE-116

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

The Web Client of Parallels Remote Application Server v18.0 is vulnerable to Host Header Injection attacks. This vulnerability allows attackers to execute arbitrary commands via a crafted payload injected into the Host header.

Timeline

dates in UTC
  1. 2022-11-2300:15CVE publishedNVD

Versions per branch

NVD
Parallels remote application server
BranchAffectedFixed in
18.0= 18.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2022-11-23
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-3mv9-6gw5-j7q6

Frequently asked questions

What is CVE-2022-40870?

The Web Client of Parallels Remote Application Server v18.0 is vulnerable to Host Header Injection attacks. This vulnerability allows attackers to execute arbitrary commands via a crafted payload injected into the Host header.

Is CVE-2022-40870 actively exploited?

A proof-of-concept exploit exists for CVE-2022-40870, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2022-40870?

CVE-2022-40870 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record