CVE-2002-0518 Null dereference in n/a
Remote attackers can crash FreeBSD systems via SYN packets or socket restarts due to null pointer dereferences in the SYN cache mechanism.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2002-0518?
CVE-2002-0518 is a medium-severity vulnerability in Freebsd Freebsd, published on 11 Jun 2002. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The SYN cache (syncache) and SYN cookie (syncookie) mechanism in FreeBSD 4.5 and earlier allows remote attackers to cause a denial of service (crash) (1) via a SYN packet that is accepted using syncookies that causes a null pointer to be referenced for the socket's TCP options, or (2) by killing and restarting a process that listens on the same socket, which does not properly clear the old inpcb pointer on restart.
Which versions are affected by CVE-2002-0518?
It affects 1 product.
Products include Freebsd Freebsd.
How do I fix CVE-2002-0518?
No fix has been published for CVE-2002-0518 yet. Limit exposure of the affected software until one is available.
Is CVE-2002-0518 being exploited?
There is no known exploitation of CVE-2002-0518 in the wild and no public exploit code.
Other vulnerabilities in Freebsd Freebsd
Sources
Also known as GHSA-9x25-pv9q-883c.