PowerDNS TCP DNS query buffer overflow
| powerdns-dns-bo (30270) |  High Risk |
Description:
PowerDNS is vulnerable to a buffer overflow, caused by improper processing of malformed TCP DNS queries. By sending a malformed TCP DNS query, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
*CVSS:
| Base Score: | 10 |
| Access Vector: | Remote |
| Access Complexity: | Low |
| Authentication: | Not Required |
| Confidentiality Impact: | Complete |
| Integrity Impact: | Complete |
| Availability Impact: | Complete |
| Temporal Score: | 7.4 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
Remedy:
Upgrade to the latest version of PowerDNS (3.1.4 or later), available from the PowerDNS Web site. See References.
For Debian GNU/Linux:
Refer to DSA-1211-1 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
References:
- PowerDNS Security Advisory 2006-01: Malformed TCP queries can lead to a buffer overflow which might be exploitable.
- PowerDNS Web site: Downloads.
- BID-21037: PowerDNS Remote Denial of Service and Buffer Overflow Vulnerabilities
- CVE-2006-4251: Buffer overflow in PowerDNS Recursor 3.1.3 and earlier might allow remote attackers to execute arbitrary code via a malformed TCP DNS query that prevents Recursor from properly calculating the TCP DNS query length.
- DSA-1211: pdns -- buffer overflow
- SA22824: PowerDNS Recursor Two Vulnerabilities
- SUSE-SA:2006:070: pdns remote denial of service problem
- VUPEN/ADV-2006-4484: PowerDNS TCP DNS Queries and CNAME Records Code Execution Vulnerabilities
Platforms Affected:
- Debian Debian Linux 3.1
- PowerDNS PowerDNS 3.1.3
- SUSE SuSE Linux 10.1
Reported:
Nov 13, 2006
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
For corrections or additions please email xforce@iss.net
* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.