(Fedora Issues Fix for FC2) Squid SNMP Parsing Error Lets Remote Users Restart the Proxy Server
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SecurityTracker Alert ID: 1011679
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SecurityTracker URL: http://securitytracker.com/id?1011679
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CVE Reference: CAN-2004-0918
(Links to External Site)
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Date: Oct 14 2004
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Impact: Denial of service via network
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Fix Available: Yes
Vendor Confirmed: Yes
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Version(s): prior to 2.5.STABLE3-4.fc2.2
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Description: iDEFENSE reported a vulnerability in Squid in the SNMP service. A remote user can cause denial of service conditions.
It is reported that a remote user can supply a specially crafted SNMP packet to trigger an ASN1 parsing error and cause Squid to
restart, dropping all current connections.
The flaw resides in the asn_parse_header() function in 'snmplib/asn1.c'.
The system
is affected if compiled with SNMP support.
The vendor was notified on September 15, 2004.
The original advisory is available
at:
http://www.idefense.com/application/poi/display?id=152&type=vulnerabilities
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Impact: A remote user can cause the proxy services to restart.
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Solution: Fedora has released a fix, available at:
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/2/
b186266417cde4ae107590c2a57529e3
SRPMS/squid-2.5.STABLE5-4.fc2.2.src.rpm
4ec79efd0c0adc7374814f60fefea25b x86_64/squid-2.5.STABLE5-4.fc2.2.x86_64.rpm
40c4b0a65a0a9696bb24b5c3a9fbad3d
x86_64/debug/squid-debuginfo-2.5.STABLE5-4.fc2.2.x86_64.rpm
be53dc7d7978aa246739670e1f994402 i386/squid-2.5.STABLE5-4.fc2.2.i386.rpm
7f9c55b03369c0985fab4c56bab719f0
i386/debug/squid-debuginfo-2.5.STABLE5-4.fc2.2.i386.rpm
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Vendor URL: www.squid-cache.org/ (Links to External Site)
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Cause: Exception handling error, Input validation error
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Underlying OS: Linux (Red Hat Fedora)
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Underlying OS Comments: FC2
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Reported By: Jay Fenlason <fenlason@redhat.com>
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Wed, 13 Oct 2004 12:13:13 -0400
From: Jay Fenlason <fenlason@redhat.com>
Subject: [SECURITY] Fedora Core 2 Update: squid-2.5.STABLE5-4.fc2.2
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---------------------------------------------------------------------
Fedora Update Notification
FEDORA-2004-338
2004-10-13
---------------------------------------------------------------------
Product : Fedora Core 2
Name : squid
Version : 2.5.STABLE5
Release : 4.fc2.2
Summary : The Squid proxy caching server.
Description :
Squid is a high-performance proxy caching server for Web clients,
supporting FTP, gopher, and HTTP data objects. Unlike traditional
caching software, Squid handles all requests in a single,
non-blocking, I/O-driven process. Squid keeps meta data and especially
hot objects cached in RAM, caches DNS lookups, supports non-blocking
DNS lookups, and implements negative caching of failed requests.
Squid consists of a main server program squid, a Domain Name System
lookup program (dnsserver), a program for retrieving FTP data
(ftpget), and some management and client tools.
---------------------------------------------------------------------
* Tue Oct 12 2004 Jay Fenlason <fenlason@redhat.com> 7:2.5.STABLE3-4.fc2.2
- Backport fix for CAN-2004-0918 (Remote Denial of Service attack)
---------------------------------------------------------------------
This update can be downloaded from:
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/2/
b186266417cde4ae107590c2a57529e3 SRPMS/squid-2.5.STABLE5-4.fc2.2.src.rpm
4ec79efd0c0adc7374814f60fefea25b x86_64/squid-2.5.STABLE5-4.fc2.2.x86_64.rpm
40c4b0a65a0a9696bb24b5c3a9fbad3d x86_64/debug/squid-debuginfo-2.5.STABLE5-4.fc2.2.x86_64.rpm
be53dc7d7978aa246739670e1f994402 i386/squid-2.5.STABLE5-4.fc2.2.i386.rpm
7f9c55b03369c0985fab4c56bab719f0 i386/debug/squid-debuginfo-2.5.STABLE5-4.fc2.2.i386.rpm
This update can also be installed with the Update Agent; you can
launch the Update Agent with the 'up2date' command.
---------------------------------------------------------------------
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