[371] in Best-of-Security
BoS: ISS Security Alert Summary v1 n3
daemon@ATHENA.MIT.EDU (X-Force)
Sat Sep 27 02:02:43 1997
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ISS Security Alert Summary
September 24, 1997
Volume 1 Number 3
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---
5 Reported New Vulnerabilities
- SGI-schemebo
- rdist-bo3
- Sun-libX11bo
- OpenBSD-iosig
- SGI-lockout
---
Date Reported: 9/15/97
Vulnerability: SGI-schemebo
Affected Platforms: IRIX (5.0.x, 5.1.x, 5.2, 5.3, 6.0.x,
6.1, 6.2, 6.3, 6.4)
Risk Factor: High
SGI uses /usr/lib/iaf/scheme as its login program which allows arguments
to be passed to it. An attacker can send a set of arguments that can
result in a buffer overflow condition. Arbitrary commands can be executed
as a result of this vulnerability as a privileged account.
References:
ftp://sgigate.sgi.com/security/19970508-02-PX
http://ciac.llnl.gov/ciac/bulletins/h-106.shtml
---
Date Reported: 9/16/97
Vulnerability: rdist-bo3
Affected Platforms: AIX (3.2, 4.1, 4.2)
FreeBSD (2.1.0)
Solaris (currently producting patches)
SunOS (currently producing patches)
Risk Factor: High
A buffer overflow problem has been found in set-uid 'root' versions of
rdist. It is possible to make rdist execute user created code as 'root'
which results in the execution of arbitrary commands such as /usr/bin/csh.
References:
ftp://info.cert.org/pub/cert_advisories/CA-97.23.rdist
http://ciac.llnl.gov/ciac/bulletins/h-107.shtml
---
Date Reported: 9/17/97
Vulnerability: Sun-libX11bo
Affected Platforms: SunOS (4.1.3, 4.1.4)
Solaris (2.3, 2.4, 2.5, 2.5.1)
Risk Factor: High
The X Windows system library, libX11, contains several buffer overflows
that may be exploited through setuid and setgid programs that link libX11.
These exploits can lead to increased access including the 'root' user
account.
References:
http://sunsolve.sun.com/sunsolve/secbulletins/security-alert-154.txt
http://ciac.llnl.gov/ciac/bulletins/h-108.shtml
---
Date Reported: 9/15/97
Vulnerability: OpenBSD-iosig
Affected Platforms: BSD (4.4 based)
- BSDI
- NetBSD
- OpenBSD
- FreeBSD
Risk Factor: Medium
OpenBSD (as well as other 4.4BSD kernel based operating systems)
contains
a vulnerability in the way it handles certain i/o signals. This bug
allows unprivileged users to send signals to arbitrary processes of
programs on the system and inturrupt its operation, or even kill the
process all together.
Reference:
http://www.cdc.net/~x/advisories/open-iosig.asc
---
Date Reported: 9/15/97
Vulnerability: SGI-lockout
Affected Platforms: IRIX (5.0.x, 5.1.x, 5.2, 5.3, 6.0.x,
6.1, 6.2, 6.3, 6.4)
Risk Factor: Low
A vulnerability exists in IRIX's login program. LOCKOUT is used to
lock out accounts when a given number of unsuccessful login attempts
has been reached. When the LOCKOUT value is set to a value greater than
zero, files can be created or corrupted.
References:
ftp://sgigate.sgi.com/security/19970508-02-PX
http://ciac.llnl.gov/ciac/bulletins/h-106.shtml
---
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.
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--------
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