CVE-2020-7463 Use after free in FreeBSD
A use-after-free vulnerability in the FreeBSD kernel allows local attackers to cause a kernel panic via crafted SCTP messages.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-7463?
CVE-2020-7463 is a medium-severity use after free vulnerability in Apple Icloud, published on 26 Mar 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In FreeBSD 12.1-STABLE before r364644, 11.4-STABLE before r364651, 12.1-RELEASE before p9, 11.4-RELEASE before p3, and 11.3-RELEASE before p13, improper handling in the kernel causes a use-after-free bug by sending large user messages from multiple threads on the same SCTP socket. The use-after-free situation may result in unintended kernel behaviour including a kernel panic.
Weakness: CWE-416
Which versions are affected by CVE-2020-7463?
It affects 9 products.
Products include Apple Icloud, Apple Ipados, Apple Iphone Os, Apple Itunes, Apple Macos, Apple Safari and 3 more.
How do I fix CVE-2020-7463?
No fix has been published for CVE-2020-7463 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2020-7463 being exploited?
There is no known exploitation of CVE-2020-7463 in the wild and no public exploit code.
Other vulnerabilities in Apple Icloud
Sources
Also known as GHSA-j8c4-54pw-h2vw.