6513817 2001-05-17 13:15 -0700 /140 rader/ TurboLinux Security Team <security@www.turbolinux.com>
Bilagans filnamn: "ramen.adv"
Importerad: 2001-05-18 10:55 av Brevbäraren
Extern mottagare: bugtraq@securityfocus.com
Mottagare: Bugtraq (import) <17084>
Bilaga (text/plain) till text 6513805
Ärende: Bilaga (ramen.adv) till: Turbolinux Security Advisories
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_________________________________________________________________________________________
TurboLinux Security Announcement
Ramen Worm
Vulnerable TurboLinux platforms: TL Workstation 6.1
Turbolinux Server versions 6.0.5 and earlier
TurboLinux Advisory ID#: TLSA2001016
References: http://www.securityfocus.com/headlines/10072
http://www.securityfocus.com/headlines/10073
http://www.securityfocus.com/archive/12/158975
http://www.linuxsecurity.com/advisories/redhat_advisory-572.html
_____________________________________________________________________________________________
Although we have not received any security alerts about Turbolinux
systems being infected by the Ramen Worm, the Turbolinux platforms
mentioned above can be susceptible to it. Please take the proper
precaution by updating the packages in your installation as soon as
possible.
_____________________________________________________________________________________________
1. Problem Summary
Ramen is a Linux-based Internet worm that has infiltrated web
servers running Red Hat 6.2 or Red Hat 7.0 Linux using three
security breaches associated with the packages nfs-utils,
wu-ftpd, and LPRng. Once the worm detects the vulnerabilities, it
exploits them, copies itself onto the server, and takes over root
access rights. The Ramen worm can damage web- related and system
files. It defaces the web site and modifies the index.html file,
ul- timately replacing it with the words:
"RameN Crew" and "Hackers looooooooooooooooove noodles."
The main page of the web site displays the message "This site
powered by" and a picture of a Top Ramen Noodles package.
According to an advisory put out by CERT, it can also create
denial of service attacks if altered or when destroyed files are
not available. A system compromised by the worm is at high risk
for "being party to attacks on other Internet sites."
The three security breaches sought out by the Ramen worm are as follows:
a. wu-ftpd: Buffer overrun; due to improper bounds checking, SITE EXEC may
enable remote root execution, without having any local user account
required.
b. nfs-utils: Flaw in the rpc.statd daemon can lead to remote root break in.
Please note that the nfs-utils package will replace the
packages knfsd and knfsd-client. The package knfsd-client
contains the rpc.statd daemon
c. LPRng: Vulnerability due to incorrect usage of the syslog() function.
Local and remote users can send string-formatting operators to the print-
er daemon to corrupt the daemon's execution, potentially gaining root
access.
2. Solution
Update the packages from our ftp server by running the following
command:
rpm -Uvh ftp_path_to_filename
Where ftp_path_to_filename is the following:
ftp://ftp.turbolinux.com/pub/updates/6.0/security/nfs-utils-0.2.1-7.i386.rpm
ftp://ftp.turbolinux.com/pub/updates/6.0/security/wu-ftpd-2.6.1-5.i386.rpm
ftp://ftp.turbolinux.com/pub/updates/6.0/security/LPRng-3.6.26-1.i386.rpm
The source RPMs can be downloaded here:
ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/nfs-utils-0.2.1-7.src.rpm
ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/wu-ftpd-2.6.1-5.src.rpm
ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/LPRng-3.6.26-1.src.rpm
**Note: You must rebuild and install the RPM if you choose to
download and install the SRPM. Simply installing the SRPM alone
WILL NOT CLOSE THE SECURITY HOLE.
Please verify the MD5 checksums of the updates before you install:
MD5 sum Package Name
---------------------------------------------------------------------------------------------
a11507768f746e6dfbe1b55705ac9b0a wu-ftpd-2.6.1-5.i386.rpm
aec472f299ad23e8e1030f3aeb6733c7 wu-ftpd-2.6.1-5.src.rpm
ddb4b4c0d50650c4a8acc5692b8c0f1a nfs-utils-0.2.1-7.i386.rpm
948e3c6b45db0d18b57713572575d6c8 nfs-utils-0.2.1-7.src.rpm
b4366ecf26b2156d9de3c0bbdce320ca LPRng-3.6.26-1.i386.rpm
a6d6ce0f0291ba42d7fa4ef063bc1107 LPRng-3.6.26-1.src.rpm
_____________________________________________________________________________________________
These packages are GPG signed by TurboLinux for security. Our key
is available here:
http://www.turbolinux.com/security/tlgpgkey.asc
To verify a package, use the following command:
rpm --checksig name_of_rpm
To examine only the md5sum, use the following command:
md5sum name_of_rpm
**Note: Checking GPG keys requires RPM 3.0 or higher.
________________________________________________________________________________________________
You can find more updates on our ftp server:
ftp://ftp.turbolinux.com/pub/updates/6.0/security/
for TL6.x Workstation and Server security updates
Our webpage for security announcements:
http://www.turbolinux.com/security
If you want to report vulnerabilities, please contact:
security@turbolinux.com
________________________________________________________________________________________________
Subscribe to the TurboLinux Security Mailing lists:
TL-security - A moderated list for discussing security issues
TurboLinux products.
Subscribe at http://www.turbolinux.com/mailman/listinfo/tl-security
TL-security-announce - An announce-only mailing list for security
updates and alerts.
Subscribe at:
http://www.turbolinux.com/mailman/listinfo/tl-security-announce
(6513817) /TurboLinux Security Team <security@www.turbolinux.com>/(Ombruten)