PT-2020-17337 · Envoy · Envoy

Published 2020-12-15 · Updated 2024-03-06 · CVE-2020-35471

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 versions prior to 1.16.1

Description The issue is related to the mishandling of dropped and truncated datagrams, which can cause a segmentation fault when a UDP packet size exceeds 1500.

Recommendations For Envoy versions prior to 1.16.1, update to version 1.16.1 or later to resolve the issue. As a temporary workaround, consider restricting UDP packet sizes to 1500 or less to minimize the risk of exploitation.

Exploit

Fix

Related Identifiers

BIT-ENVOY-2020-35471

CVE-2020-35471

OPENSUSE-SU-2022:0065-1

Affected Products

Envoy

References · 19

• 🔥 https://github.com/envoyproxy/envoy/issues/14113 · Exploit
• https://github.com/envoyproxy/envoy/pull/14122 · Patch
• https://github.com/envoyproxy/envoy/compare/v1.16.0...v1.16.1 · Patch
• https://osv.dev/vulnerability/BIT-envoy-2020-35471 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-35471 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2022:0065-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-35471 · Vendor Advisory
• https://suse.com/security/cve/CVE-2020-35471 · Note
• https://suse.com/security/cve/CVE-2020-8663 · Note
• https://t.me/cibsecurity/20799 · Telegram Post
• https://suse.com/security/cve/CVE-2020-12604 · Note
• https://lists.opensuse.org/archives/list/[e-mail]/thread/WUFXLLYPEPLGLE3CNOENBUDET76YJXPI · Note
• https://suse.com/security/cve/CVE-2020-12603 · Note
• https://t.me/cvenotify/7096 · Telegram Post
• https://bugzilla.suse.com/1167073 · Note