CVE-2015-3223 Denial of service in n/a
Remote attackers can cause a denial of service via infinite loop in Samba's AD LDAP server by sending crafted packets.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2015-3223?
CVE-2015-3223 is a medium-severity denial of service vulnerability in Samba Samba, published on 29 Dec 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The ldb_wildcard_compare function in ldb_match.c in ldb before 1.1.24, as used in the AD LDAP server in Samba 4.x before 4.1.22, 4.2.x before 4.2.7, and 4.3.x before 4.3.3, mishandles certain zero values, which allows remote attackers to cause a denial of service (infinite loop) via crafted packets.
Which versions are affected by CVE-2015-3223?
It affects 1 product.
Products include Samba Samba.
How do I fix CVE-2015-3223?
Upgrade to a fixed version.
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-2015-3223 being exploited?
There is no known exploitation of CVE-2015-3223 in the wild and no public exploit code.
Other vulnerabilities in Samba Samba
Sources
Also known as DEBIAN-CVE-2015-3223, ECHO-dfe2-71fb-0288, GHSA-mfhq-m29x-g5ww, UBUNTU-CVE-2015-3223.