PT-2021-12045 · Unknown · Uwebsockets

Published 2021-07-01 · Updated 2024-08-04 · CVE-2020-36406

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: uWebSockets versions 18.11.0 through 18.12.0

Description: The issue is related to a stack-based buffer overflow in the uWS::TopicTree::trimTree function, which is called from uWS::TopicTree::unsubscribeAll. The vendor disputes the severity of this issue, stating it is minor or not an issue at all, as developers should not allow a large number of triggered topics to accumulate.

Recommendations: For versions 18.11.0 and 18.12.0, consider restricting the number of triggered topics to prevent accumulation and minimize the risk of exploitation. As a temporary workaround, consider disabling the uWS::TopicTree::trimTree function until a patch is available. Restrict access to the uWS::TopicTree::unsubscribeAll function to minimize the risk of exploitation.

Exploit

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2020-36406

Affected Products

Uwebsockets

References · 7

• 🔥 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25381 · Exploit
• https://github.com/uNetworking/uWebSockets/commit/03fca626a95130ab80f86adada54b29d27242759 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2020-36406 · Security Note
• https://osv.dev/vulnerability/CVE-2020-36406 · Vendor Advisory
• https://github.com/google/oss-fuzz-vulns/blob/main/vulns/uwebsockets/OSV-2020-1695.yaml · Note
• https://t.me/cvenotify/89055 · Telegram Post
• https://t.me/cvenotify/25562 · Telegram Post