CVE-2009-4593 Denial of service in n/a
Remote attackers can crash the Bftpd daemon by exploiting a missing null terminator in the utmp logging function.
- 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-2009-4593?
CVE-2009-4593 is a medium-severity denial of service vulnerability in n/a, published on 7 Jan 2010. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The bftpdutmp_log function in bftpdutmp.c in Bftpd before 2.4 does not place a '\0' character at the end of the string value of the ut.bu_host structure member, which might allow remote attackers to cause a denial of service (daemon crash) via unspecified vectors. NOTE: some of these details are obtained from third party information.
Which versions are affected by CVE-2009-4593?
It affects 1 product.
Products include Jesse Smith Bftpd.
How do I fix CVE-2009-4593?
No fix has been published for CVE-2009-4593 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2009-4593 being exploited?
There is no known exploitation of CVE-2009-4593 in the wild and no public exploit code.
Sources
Also known as GHSA-8842-36j7-97qj.