PT-2022-15010 · Envoy · Envoy

Mattklein123 · Published 2022-02-22 · Updated 2024-03-06 · CVE-2022-21655

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 Envoy (affected versions not specified)

Description The envoy common router will experience a segfault if an internal redirect selects a route configured with direct response or redirect actions, resulting in a denial of service.

Recommendations As a workaround, turn off internal redirects if direct response entries are configured on the same listener.

Exploit

Fix

DoS

Weakness Enumeration

CWE-670

Related Identifiers

BIT-ENVOY-2022-21655

CVE-2022-21655

GHSA-7R5P-7FMH-JXPG

RHSA-2022:1275

RHSA-2022:1276

Affected Products

Envoy

References · 9

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/21xxx/CVE-2022-21655.json · Exploit
• https://github.com/envoyproxy/envoy/commit/177d608155ba8b11598b9bbf8240e90d8c350682 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-21655 · Security Note
• https://osv.dev/vulnerability/BIT-envoy-2022-21655 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-21655 · Vendor Advisory
• https://github.com/envoyproxy/envoy/security/advisories/GHSA-7r5p-7fmh-jxpg · Note
• https://t.me/cvenotify/27191 · Telegram Post
• https://t.me/cibsecurity/37919 · Telegram Post
• https://t.me/cvenotify/27607 · Telegram Post