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From: Slackware Security Team <security@slackware.com>
To: slackware-security@slackware.com
Subject: [slackware-security] tcpdump DoS (SSA:2005-195-10)
Date: Thu, 14 Jul 2005 18:13:58 -0700 (PDT)
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Hash: SHA1

[slackware-security]  tcpdump DoS (SSA:2005-195-10)


New tcpdump packages are available for Slackware 8.1, 9.0, 9.1, 10.0, 10.1,
and -current to fix a security issue.  A specially crafted BGP packet can
cause tcpdump to go into an infinite loop, creating a denial of service
where network monitoring is disabled.

More details about this issue may be found in the Common
Vulnerabilities and Exposures (CVE) database:

  http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1267


Here are the details from the Slackware 10.1 ChangeLog:
+--------------------------+
patches/packages/tcpdump-3.9.3-i486-1.tgz:  Upgraded to libpcap-0.9.3 and
  tcpdump-3.9.3.  This fixes an issue where an invalid BGP packet can
  cause tcpdump to go into an infinate loop, effectively disabling network
  monitoring.
  (* Security fix *)
+--------------------------+


Where to find the new packages:
+-----------------------------+

Updated package for Slackware 8.1:
ftp://ftp.slackware.com/pub/slackware/slackware-8.1/patches/packages/tcpdump-3.9.3-i386-1.tgz

Updated package for Slackware 9.0:
ftp://ftp.slackware.com/pub/slackware/slackware-9.0/patches/packages/tcpdump-3.9.3-i386-1.tgz

Updated package for Slackware 9.1:
ftp://ftp.slackware.com/pub/slackware/slackware-9.1/patches/packages/tcpdump-3.9.3-i486-1.tgz

Updated package for Slackware 10.0:
ftp://ftp.slackware.com/pub/slackware/slackware-10.0/patches/packages/tcpdump-3.9.3-i486-1.tgz

Updated package for Slackware 10.1:
ftp://ftp.slackware.com/pub/slackware/slackware-10.1/patches/packages/tcpdump-3.9.3-i486-1.tgz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/tcpdump-3.9.3-i486-1.tgz


MD5 signatures:
+-------------+

Slackware 8.1 package:
73d5fb7b2b08c4429250852288b7ec43  tcpdump-3.9.3-i386-1.tgz

Slackware 9.0 package:
d36fb5f50c45293b7765a4708e6e66df  tcpdump-3.9.3-i386-1.tgz

Slackware 9.1 package:
2216f3c10ddade160edd56c11b424253  tcpdump-3.9.3-i486-1.tgz

Slackware 10.0 package:
c15f281237b47e989264e2bfb172be5e  tcpdump-3.9.3-i486-1.tgz

Slackware 10.1 package:
db64337ad0896ea14843172a87d576ab  tcpdump-3.9.3-i486-1.tgz

Slackware -current package:
678a4268c6b2f7a01592baac5d62b84a  tcpdump-3.9.3-i486-1.tgz


Installation instructions:
+------------------------+

Upgrade the package as root:
# upgradepkg tcpdump-3.9.3-i486-1.tgz


+-----+

Slackware Linux Security Team
http://slackware.com/gpg-key
security@slackware.com

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