Joined: 12 May 2004
|Posted: Wed May 10, 2006 5:26 am Post subject: [ GLSA 200605-10 ] pdnsd: Denial of Service and potential ar
|Gentoo Linux Security Advisory
Title: pdnsd: Denial of Service and potential arbitrary code execution (GLSA 200605-10)
Date: May 10, 2006
pdnsd is vulnerable to a buffer overflow that may result in arbitrary code execution.
pdnsd is a proxy DNS server with permanent caching that is designed to cope with unreachable DNS servers.
Vulnerable: < 1.2.4
Unaffected: >= 1.2.4
Architectures: All supported architectures
The pdnsd team has discovered an unspecified buffer overflow vulnerability. The PROTOS DNS Test Suite, by the Oulu University Secure Programming Group (OUSPG), has also revealed a memory leak error within the handling of the QTYPE and QCLASS DNS queries, leading to consumption of large amounts of memory.
An attacker can craft malicious DNS queries leading to a Denial of Service, and potentially the execution of arbitrary code.
There is no known workaround at this time.
All pdnsd users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=net-dns/pdnsd-1.2.4-r1"