Security Advisories Week: 30 May - 6 June 2002
by Berislav Kucan


Title: Buffer Overflow when parsing NFS traffic
Date: June 6 2002
Vendor: Conectiva
Vulnerable systems: Conectiva Linux 6.0, 7.0, 8
Full advisory: http://www.net-security.org/advisory.php?id=746
Problem description: There is a buffer overflow vulnerability in tcpdump when it is parsing NFS traffic. A remote attacker could exploit this to at least crash the tcpdump process.



Title: tcpdump AFS RPC and NFS packet vulnerabilities
Date: June 6 2002
Vendor: Caldera
Vulnerable systems: OpenLinux 3.1.1 Server prior to tcpdump-3.6.2-2.i386.rpm, OpenLinux 3.1.1 Workstation prior to tcpdump-3.6.2-2.i386.rpm, OpenLinux 3.1 Server prior to tcpdump-3.6.2-2.i386.rpm, OpenLinux 3.1 Workstation prior to tcpdump-3.6.2-2.i386.rpm
Full advisory: http://www.net-security.org/advisory.php?id=747
Problem description: The tcpdump program is vulnerable to several buffer overflows, the most serious of which are problems with the decoding of AFS RPCpackets and the handling of malformed NFS packets.



Title: Conectiva Linux Kernel update
Date: June 6 2002
Vendor: Conectiva
Vulnerable systems: 5.0, prg graficos, ecommerce, 5.1, 6.0, 7.0
Full advisory: http://www.net-security.org/advisory.php?id=748
Problem description: This announcement updates the kernel package and fixes zlib and lcall vulnerabilities.



Title: Remote denial of service attack in BIND
Date: June 6 2002
Vendor: SuSE
Vulnerable systems: SuSE Linux 7.0, 7.1, 7.2, 7.3, 8.0
Full advisory: http://www.net-security.org/advisory.php?id=749
Problem description: There is a bug in the BIND9 name server that is triggered when processing certain types of DNS replies.

Spotlight

Black hole routing: Not a silver bullet for DDoS protection

As ISPs, hosting providers and online enterprises around the world continue suffering the effects of DDoS attacks, often the discussions that follow are, “What is the best way to defend our networks and our customers against an attack?”


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