FreeBSD41D2F3E6-F680-11E9-A87F-A4BADB2F4699FreeBSD -- ICMPv6 / MLDv2 out-of-bounds memory access
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.013 Low
EPSS
Percentile
85.5%
Problem Description:
The ICMPv6 input path incorrectly handles cases where
an MLDv2 listener query packet is internally fragmented
across multiple mbufs.
Impact:
A remote attacker may be able to cause an out-of-bounds
read or write that may cause the kernel to attempt to access
an unmapped page and subsequently panic.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| FreeBSD | any | noarch | freebsd-kernel | = 12.0 | UNKNOWN |
| FreeBSD | any | noarch | freebsd-kernel | < 12.0_9 | UNKNOWN |
Related
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.013 Low
EPSS
Percentile
85.5%