TITLE: PowerDNS Recursor Two Vulnerabilities
SECUNIA ADVISORY ID: SA22824
VERIFY ADVISORY: http://secunia.com/advisories/22824/
CRITICAL: Highly critical
IMPACT: DoS, System access
WHERE: >From remote
SOFTWARE: PowerDNS Recursor 3.x http://secunia.com/product/9556/ PowerDNS 2.x http://secunia.com/product/929/
DESCRIPTION: Two vulnerabilities have been reported in PowerDNS Recursor, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise a vulnerable system.
1) An error in length calculation when handling TCP DNS queries can be exploited to cause an overly large copy via a specially crafted packet.
Successful exploitation may allow execution of arbitrary code.
2) An error in the handling CNAME records can be exploited to crash the service.
The vulnerabilities are reported in PowerDNS Recursor versions 3.1.3 and prior. PowerDNS Authoritative Server (pdns_server) is not affected.
SOLUTION: Update to PowerDNS Recursor 3.1.4.
PROVIDED AND/OR DISCOVERED BY: Reported by the vendor.
ORIGINAL ADVISORY: http://doc.powerdns.com/powerdns-advisory-2006-01.html http://doc.powerdns.com/powerdns-advisory-2006-02.html
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Definitions: (Criticality, Where etc.) http://secunia.com/about_secunia_advisories/
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