Use After Free in Freebsd
CVE-2020-7469
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.
Vulnerability class: Use-After-Free
EPSS: 0.012 (65.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Freebsd — versions 11.4, 12.1, 12.2
- Netapp Clustered_data_ontap
- N/a Freebsd — versions FreeBSD 12.2-RELEASE before p1, 12.1-RELEASE before p11, 11.4-RELEASE before p5
Weakness classification (CWE)
References
- secteam@freebsd.org (x_refsource_MISC, Vendor Advisory)
- secteam@freebsd.org (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-7469?
- CVE-2020-7469 is a high-severity vulnerability in Freebsd, classified under Use After Free. CVSS score: 7.5/10. Published 2021-06-04.
- How severe is CVE-2020-7469?
- High severity. CVSS v3 base score is 7.5 out of 10.