PT-2023-22652 · Cloudflare · Cfnts

00Xc + 1 · Published 2023-06-14 · Updated 2023-06-27 · CVE-2023-3036

Positive Technologies (AI Summary)

CVSS v3.1

8.6

High

Base vector

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

Name of the Vulnerable Software and Affected Versions github.com/cloudflare/cfnts versions prior to commit 783490b

Description The issue is related to an unchecked read in the NTP server, which allows a remote attacker to trigger a panic by sending an NTSAuthenticator packet with an extension length longer than the packet contents.

Recommendations For versions prior to commit 783490b, update to a version that includes the fix for this issue, specifically commit 783490b or later. As a temporary workaround, consider restricting access to the NTP server to minimize the risk of exploitation.

Fix

Buffer Overflow

Out of bounds Read

Weakness Enumeration

CWE-119

CWE-125

Related Identifiers

CVE-2023-3036

GHSA-PWX6-GW47-96CP

Affected Products

Cfnts

References · 5

• https://github.com/cloudflare/cfnts/security/advisories/GHSA-pwx6-gw47-96cp · Patch
• https://osv.dev/vulnerability/CVE-2023-3036 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-3036 · Security Note
• https://github.com/cloudflare/cfnts · Note
• https://t.me/cvenotify/52295 · Telegram Post