Vulnerability Details : CVE-2023-3036
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.
Vulnerability category: Overflow
Products affected by CVE-2023-3036
- cpe:2.3:a:cloudflare:cfnts:*:*:*:*:*:rust:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-3036
0.47%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 63 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-3036
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
8.6
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
3.9
|
4.0
|
Cloudflare, Inc. | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2023-3036
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: cna@cloudflare.com (Secondary)
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by:
- cna@cloudflare.com (Secondary)
- nvd@nist.gov (Primary)
References for CVE-2023-3036
-
https://github.com/cloudflare/cfnts/security/advisories/GHSA-pwx6-gw47-96cp
Out of Bounds Slice index leads to remote panic · Advisory · cloudflare/cfnts · GitHubPatch;Third Party Advisory
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