PT-2023-19183 · Unknown · Fizz Library

Published 2023-05-18 · Updated 2025-01-21 · CVE-2023-23759

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 fizz library versions prior to v2023.01.30.00

Description The issue is related to a CHECK failure that can be triggered remotely in the fizz library. This behavior occurs when the client-supported cipher advertisement changes between the original ClientHello and the second ClientHello, resulting in a process crash. The impact is limited to denial of service.

Recommendations For versions prior to v2023.01.30.00, update to version v2023.01.30.00 or later to resolve the issue. As a temporary workaround, consider restricting changes to the client-supported cipher advertisement between the original and second ClientHello to minimize the risk of exploitation.

Fix

Assertion Failure

Weakness Enumeration

CWE-617

Related Identifiers

CVE-2023-23759

Affected Products

Fizz Library

References · 7

• https://github.com/facebookincubator/fizz/commit/8d3649841597bedfb6986c30431ebad0eb215265 · Patch
• https://osv.dev/vulnerability/CVE-2023-23759 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-23759 · Security Note
• https://facebook.com/security/advisories/cve-2023-23759 · Vendor Advisory
• https://t.me/cvenotify/50776 · Telegram Post
• https://t.me/cibsecurity/64445 · Telegram Post
• https://t.me/cvenotify/108140 · Telegram Post