Rapid7 Vulnerability & Exploit Database

RHSA-2000:075: Updated usermode packages available

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RHSA-2000:075: Updated usermode packages available

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
09/30/2000
Created
07/25/2018
Added
10/28/2005
Modified
07/04/2017

Description

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(s)

  • redhat-upgrade-sysvinit
  • redhat-upgrade-usermode

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