[361] in Best-of-Security
BoS: ISSalert: ISS Security Alert Summary v1 n2
daemon@ATHENA.MIT.EDU (X-Force)
Mon Sep 22 17:21:28 1997
Date: Thu, 11 Sep 1997 10:54:18 -0400 (EDT)
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ISS Security Alert Summary
September 10, 1997
Volume 1 Number 2
To receive these Alert Summaries, get on ISS Alert mailing list by sending
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subscribe alert.
---
8 Reported New Vulnerabilities
- FreeBSD-procfs
- wu_ftpd
- majordomo
- SGI-webdist
- AIX-syslogd
- IEcorrupt
- HP-vue/dt
- AIX-bugfiler
2 Updates
- xlock (HP-UX)
- libXt (HP-UX)
---
Date Reported: 8/12/97
Vulnerability: FreeBSD-procfs
Affected Platforms: FreeBSD (2.1.x, 2.2.x)
Risk Factor: High
procfs is used by programs like ps to interface processes on a system. It
contains a bug that allows procfs processes to write memory of other
processes. This allows any local user to gain root privileges.
Reference:
http://ciac.llnl.gov/ciac/bulletins/h-101.shtml
ftp://freebsd.org/pub/CERT/advisories/FreeBSD-SA-97%3A04.procfs.asc
---
Date Reported: 8/15/97
Vulnerability: wu_ftpd
Affected Platforms: BSDI (3.0)
FreeBSD (2.2.1)
SunOS (4.1.3)
(others likely, untested as of 9/9/97)
Risk Factor: Medium
A denial of service attack exists in all versions of wu_ftp servers. It
is possible to create large directory listings with a recursive nlist
command. CPU usage can rise to up to 99% and with multiple attacks can
stay that way for hours.
Reference:
Posted on security@FreeBSD.ORG. Subject: FTP compromise.
---
Date Reported: 8/24/97
Vulnerability: majordomo
Affected Platforms: Any platform running majordomo server
Risk Factor Medium
majordomo is a program that is used to subscribe and unsubscribe users to
mailing lists on a system. It contains a bug that allows both local and
remote users to execute commands with the privileges of the user running
the majordomo server. If the server has a list that includes the
'advertise' or 'noadvertise' lines in the configuration file, the server
is vulnerable.
---
Date Reported: 5/6/97 (original), 8/26/97 (updated)
Vulnerability: sgi-webdist
Affected Platforms: IRIX (5.3, 6.0.1, 6.1, 6.2, 6.3, 6.4)
Risk Factor: High
webdist.cgi is a cgi program that allows users to install software via a
web interface. It does not check arguements passed to it sufficiently
and therefore allows for the execution of commands with uid of the httpd
server, which on some insecure networks, could be privileged accounts.
Reference:
ftp://sgigate.sgi.com/security/19970501-02-PX
ftp://info.cert.org/pub/cert_advisories/CA-97.12.webdist
---
Date Reported: 8/27/97
Vulnerability: AIX-syslogd
Affected Platforms: AIX (4.1, 4.2)
Risk Factor: Medium
Because syslogd logs remote messages by default, AIX is vulnerable
to denial of service attacks as well as fake messages being logged to
syslog. A temporary fix is avaliable and patches will be announced as
soon as they become public.
Temporary Fix:
ftp://testcase.software.ibm.com/aix/fromibm/security.syslogd.tar.Z
---
Date Reported: 9/5/97
Vulnerability: IEcorrupt
Affected Platforms: Windows NT/95
(running Microsoft Internet Explorer 3 or 4)
Risk Factor: High
A security hole exists in Microsoft's Internet Explorer web browser that
allows malicious web pages to corrupt files of viewers of that page.
Although this is not a bug in Java, it is a bug in Microsoft's extensions
to Java. This problem will be fixed in the release of Microsoft's
Internet Explorer 4 which should be out towards the end of September.
Reference:
http://web.mit.edu/twm/www/expbug2/
---
Date Reported: 9/8/97
Vulnerability: HP-vue/dt
Affected Platforms: HP-UX (9.x, 10.x)
Risk Factor: Medium
Xserver programs vuefile, vuepad, dtfile, and dtpad do not authenticate
users. If a user runs one of these programs while su'd to another user,
it can result in allowed access to their accounts. Although there is no
patch for this problem, a good solution would be to avoid running these
programs when su'd to another account.
Reference:
HP Security Bulletin #00069 - http://us-support.external.hp.com/
---
Date Reported: 9/8/97
Vulnerability: AIX-bugfiler
Affected Platforms: AIX (3.x)
Risk Factor: High
bugfiler is a program that automatically stores bug reports in specified
mail directories specified by the MailDirectory variable after summarizing
them. This program is setuid root which makes it possible for users to
circumvent file access restrictions. On some systems, this allows root
access to be gained.
Reference:
Posted on comp.security.unix - Subject: (fwd) AIX bugfiler vulnerability
------
Update: libXt (ISS Security Alert Summary v1 n1)
Date: 9/8/97
Vendor: Hewlett Packard
Platform: HP-UX (9.x, 10.x)
Hewlett Packard has released patches for buffer overflow problems in the
Xt library. These patches can be obtained from HP's patch site:
http://us-support.external.hp.com/
Reference:
HP Security Bulletin #00058 - http://us-support.external.hp.com/
---
Update: xlock (ISS Security Alert Summary v1 n1)
Date: 9/8/97
Vendor: Hewlett Packard
Platform: HP-UX (any version with vhelock)
Hewlett Packard has released patches for buffer overflow problems in
X11/Motif libraries. These patches can be obtained from HP's patch site:
http://us-support.external.hp.com/
Reference:
HP Security Bulletin #00067 - http://us-support.external.hp.com/
---
Risk Factor Key:
High any vulnerability that provides an attacker with immediate
access into a machine, gains superuser access, or bypasses
a firewall. Example: A vulnerable Sendmail 8.6.5 version
that allows an intruder to execute commands on mail
server.
Medium any vulnerability that provides information that has a
high potential of giving access to an intruder. Example:
A misconfigured TFTP or vulnerable NIS server that allows
an intruder to get the password file that possibly can
contain an account with a guessable password.
Low any vulnerability that provides information that
potentially could lead to a compromise. Example: A
finger that allows an intruder to find out who is online
and potential accounts to attempt to crack passwords
via bruteforce.
Internet Security Systems, Inc., (ISS) is the pioneer and world's leading
supplier of network security assessment and monitoring tools, providing
comprehensive software that enables organizations to proactively manage
and minimize their network security risks. ISS' SAFEsuite(tm) product
family automatically detects, monitors, and responds to the growing number
of network security vulnerabilities and threats. The Atlanta-based
company's flagship product, Internet Scanner, is the world's leading
security auditing tool used to eliminate network security vulnerabilities
in corporations, government agencies, and financial institutions including
9 out of the top 10 U.S. banks. ISS' real time attack recognition and
response tool, RealSecure(tm), is the leading network monitoring software
used to automatically guard networks from external threats and internal
misuse. For more information, contact the company at (800) 776-2362 or
(770) 395-0150 or visit the ISS Web site at http://www.iss.net.
--------
Copyright (c) 1997 by Internet Security Systems, Inc.
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