CVE-2020-7469 Information

Description

In FreeBSD 12.2-STABLE before r367402 11.4-STABLE before r368202 12.2-RELEASE before p1 12.1-RELEASE before p11 and 11.4-RELEASE before p5 the handler for a routing option caches a pointer into the packet buffer holding the ICMPv6 message. However when processing subsequent options the packet buffer may be freed rendering the cached pointer invalid. The network stack may later dereference the pointer potentially triggering a use-after-free.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://security.FreeBSD.org/advisories/FreeBSD-SA-20:31.icmp6.asc https://security.netapp.com/advisory/ntap-20210720-0001/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5