Vulnerability Name:

CCN-9826

Published:1996-06-24
Updated:1996-06-24
Summary:A vulnerability in the ipfw packet filtering program in FreeBSD-current and FreeBSD-STABLE dated prior to 23-Jun-1996 could result in a different level of packet filtering then what is expected. When mask addresses are specified to ipfw using the address:mask syntax, the packet filtering level changes without the user's knowledge, which causes ipfw to either allow or deny more packets than what is expected.
CVSS v3 Severity:5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
Vulnerability Consequences:Other
References:Source: CCN
Type: FreeBSD Security Advisory FreeBSD-SA-96:14
Firewall filter leak with user level ip

Source: CCN
Type: FreeBSD Web site
The FreeBSD Project

Source: XF
Type: UNKNOWN
freebsd-ipfw-address-mask(9826)

Vulnerable Configuration:Configuration CCN 1:
  • cpe:/o:freebsd:freebsd:*:stable:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    freebsd freebsd * stable