PT-2021-19478 · Frontier · Frontier Ichris

L00Neyhacker · Published 2021-05-29 · Updated 2021-06-09 · CVE-2021-31702

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Frontier ichris versions through 5.18

Description The issue concerns mishandling of DNS requests for the hostname in the HTTP Host header. This can be exploited by submitting 127.0.0.1 multiple times, leading to a denial-of-service (DoS) condition.

Recommendations For versions through 5.18, consider restricting access to the HTTP Host header to minimize the risk of exploitation. As a temporary workaround, avoid submitting multiple requests with the same hostname to prevent DoS. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Related Identifiers

CVE-2021-31702

Affected Products

Frontier Ichris

References · 5

• 🔥 https://github.com/l00neyhacker/CVE-2021-31702 · Exploit
• https://osv.dev/vulnerability/CVE-2021-31702 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-31702 · Security Note
• https://t.me/cvenotify/15281 · Telegram Post
• https://t.me/cvenotify/16012 · Telegram Post