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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2023-4809 Detail

Description

In pf packet processing with a 'scrub fragment reassemble' rule, a packet containing multiple IPv6 fragment headers would be reassembled, and then immediately processed. That is, a packet with multiple fragment extension headers would not be recognized as the correct ultimate payload. Instead a packet with multiple IPv6 fragment headers would unexpectedly be interpreted as a fragmented packet, rather than as whatever the real payload is. As a result, IPv6 fragments may bypass pf firewall rules written on the assumption all fragments have been reassembled and, as a result, be forwarded or processed by the host.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.openwall.com/lists/oss-security/2023/09/08/5 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2023/09/08/6 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2023/09/08/7 Mailing List  Third Party Advisory 
https://security.FreeBSD.org/advisories/FreeBSD-SA-23:10.pf.asc Vendor Advisory 
https://security.netapp.com/advisory/ntap-20231221-0009/

Weakness Enumeration

CWE-ID CWE Name Source
NVD-CWE-Other Other cwe source acceptance level NIST  
CWE-167 Improper Handling of Additional Special Element FreeBSD  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2023-4809
NVD Published Date:
09/06/2023
NVD Last Modified:
12/21/2023
Source:
FreeBSD