Squid SNMP ASN.1 Parser Denial Of Service

Publish date: February 15, 2011
  Severity: MEDIUM
  CVE Identifier: CAN-2004-0918
  Advisory Date: FEB 15, 2011

  DESCRIPTION

 The asn_parse_header function (asn1.c) in the SNMP module for Squid Web Proxy Cache before 2.4.STABLE7 allows remote attackers to cause a denial of service (server restart) via certain SNMP packets with negative length fields that trigger a memory allocation error.

  TREND MICRO PROTECTION INFORMATION

Trend Micro Deep Security shields networks through Deep Packet Inspection (DPI) rules. Trend Micro customers using OfficeScan with Intrusion Defense Firewall (IDF) plugin are also protected from attacks using these vulnerabilities. Please refer to the filter number and filter name when applying appropriate DPI and/or IDF rules.

  SOLUTION

  Trend Micro Deep Security DPI Rule Number: 1000526
  Trend Micro Deep Security DPI Rule Name: 1000526 - Squid SNMP ASN.1 Parser Denial Of Service

  AFFECTED SOFTWARE AND VERSION

  • Gentoo Linux
  • OpenPKG OpenPKG 2.1
  • OpenPKG OpenPKG 2.2
  • OpenPKG OpenPKG Current
  • Red Hat Fedora Core 2.0
  • Squid Squid 2.0 PATCH2
  • Squid Squid 2.1 PATCH2
  • Squid Squid 2.3 .STABLE4
  • Squid Squid 2.3 .STABLE5
  • Squid Squid 2.4
  • Squid Squid 2.4 .STABLE2
  • Squid Squid 2.4 .STABLE6
  • Squid Squid 2.4 .STABLE7
  • Squid Squid 2.5 .STABLE1
  • Squid Squid 2.5 .STABLE3
  • Squid Squid 2.5 .STABLE4
  • Squid Squid 2.5 .STABLE5
  • Squid Squid 2.5 .STABLE6
  • Squid Squid 3.0 PRE1
  • Squid Squid 3.0 PRE2
  • Squid Squid 3.0 PRE3
  • Trustix Secure Enterprise Linux 2.0
  • Trustix Secure Linux 1.5
  • Trustix Secure Linux 2.0
  • Trustix Secure Linux 2.1
  • Ubuntu Ubuntu Linux 4.1

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