Vulnerability · Published Jun 14, 2023 · Assigned by cloudflare
CVE-2023-3036Out of Bounds Slice index in cfnts leads to remote panic
High 8.6
In plain English
A high-severity memory corruption in cfnts from Cloudflare. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.2% (higher than 83% of all known vulnerabilities).
Severity (CVSS 3.1)8.6High
Exploit odds (30 days)2.2%top 17.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An unchecked read in NTP server in github.com/cloudflare/cfnts prior to commit 783490b https://github.com/cloudflare/cfnts/commit/783490b913f05e508a492cd7b02e3c4ec2297b71 enabled a remote attacker to trigger a panic by sending an NTSAuthenticator packet with extension length longer than the packet contents.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cloudflare | cfnts | 0 – before < 783490b |
Weakness: CWE-119, CWE-125 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H