Updated usermode packages available

Advisory:	RHSA-2000:075-08
Type:	Security Advisory
Severity:	N/A
Issued on:	2000-12-01
Last updated on:	2000-12-01
Affected Products:	Red Hat Linux 6.2 Red Hat Linux 7.0
OVAL:	N/A
CVEs (cve.mitre.org):	CVE-2000-1207

Details

Updated usermode packages are now available for Red Hat Linux 6.x and 7.

2000-11-27: Added packages for Red Hat Linux 7 for Alpha

The usermode package contains a binary (/usr/bin/userhelper), which is used to control access to programs which are to be executed as root. Because programs invoked by userhelper are not actually running setuid-root, security measures built into recent versions of glibc are not active.

If one of these programs supports internationalized text messages, a
malicious user can use the LANG or LC_ALL environment variables (which are inherited by userhelper and, in turn, any programs it runs) to
create a format-string exploit in these programs.

These updated packages also fix a problem due to an incorrect path
specification in the /usr/bin/shutdown wrapper script and close a potential security vulnerability in the userhelper binary.

Solution

For each RPM for your particular architecture, run:

rpm -Fvh [filename]

where filename is the name of the RPM.

Updated packages

Red Hat Linux 6.2

alpha:
ftp://updates.redhat.com/6.2/alpha/usermode-1.37-1.6.alpha.rpm Missing file	`978af994a09fcbc4bf1cb2fa2723bfe7`

i386:
ftp://updates.redhat.com/6.2/i386/usermode-1.37-1.6.i386.rpm Missing file	`e8fe2db6f95348a93a373673b1c87443`

sparc:
ftp://updates.redhat.com/6.2/sparc/usermode-1.37-1.6.sparc.rpm Missing file	`ba94a59a3a8195346735f202f28af3f8`

Red Hat Linux 7.0

alpha:
ftp://updates.redhat.com/7.0/alpha/usermode-1.37-2.alpha.rpm Missing file	`6cd3999fa6015fcf301b502d4a416373`

i386:
ftp://updates.redhat.com/7.0/i386/usermode-1.37-2.i386.rpm Missing file	`c32888b6f362b04f8a3805d4465c042a`

Bugs fixed (see bugzilla for more information)

20027 - /usr/sbin/userhelper dies in segmentation fault

References

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2000-1207
N/A

Keywords

format-string

These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from:
https://www.redhat.com/security/team/key/#package

The Red Hat security contact is secalert@redhat.com. More contact details at http://www.redhat.com/security/team/contact/