Vulnerability Description
A flaw was found in samba versions 4.0.0 to 4.5.2. The Samba routine ndr_pull_dnsp_name contains an integer wrap problem, leading to an attacker-controlled memory overwrite. ndr_pull_dnsp_name parses data from the Samba Active Directory ldb database. Any user who can write to the dnsRecord attribute over LDAP can trigger this memory corruption. By default, all authenticated LDAP users can write to the dnsRecord attribute on new DNS objects. This makes the defect a remote privilege escalation.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Samba | Samba | >= 4.0.0, <= 4.0.26 |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/94970Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1037493Third Party AdvisoryVDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-2123Issue Tracking
- https://www.samba.org/samba/security/CVE-2016-2123.htmlPatchVendor Advisory
- http://www.securityfocus.com/bid/94970Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1037493Third Party AdvisoryVDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-2123Issue Tracking
- https://www.samba.org/samba/security/CVE-2016-2123.htmlPatchVendor Advisory
FAQ
What is CVE-2016-2123?
CVE-2016-2123 is a vulnerability with a CVSS score of 8.8 (HIGH). A flaw was found in samba versions 4.0.0 to 4.5.2. The Samba routine ndr_pull_dnsp_name contains an integer wrap problem, leading to an attacker-controlled memory overwrite. ndr_pull_dnsp_name parses ...
How severe is CVE-2016-2123?
CVE-2016-2123 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-2123?
Check the references section above for vendor advisories and patch information. Affected products include: Samba Samba.