HIGH

CVE-2022-35507

CVSS v3

7.1

HIGH

EPSS Score

14.3%

exploit probability

CISA KEV

No

known exploited

Exploitation

SSVC status

Description

A response-header CRLF injection vulnerability in the Proxmox Virtual Environment (PVE) and Proxmox Mail Gateway (PMG) web interface allows a remote attacker to set cookies for a victim's browser that are longer than the server expects, causing a client-side DoS. This affects Chromium-based browsers because they allow injection of response headers with %0d. This is fixed in pve-http-server 4.1-3.

Technical details

Published
12/4/2022

Frequently asked questions

What is CVE-2022-35507?

A response-header CRLF injection vulnerability in the Proxmox Virtual Environment (PVE) and Proxmox Mail Gateway (PMG) web interface allows a remote attacker to set cookies for a victim's browser that are longer than the server expects, causing a client-side DoS. This affects Chromium-based browsers because they allow injection of response headers with %0d. This is fixed in pve-http-server 4.1-3.

Is CVE-2022-35507 actively exploited?

Active exploitation of CVE-2022-35507 has not been confirmed. The EPSS score is 14.3%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-35507?

CVE-2022-35507 has a CVSS v3 base score of 7.1 (HIGH severity).

Is CVE-2022-35507 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.