Red Hat Linux Update: RHSA-2023:112-01 Critical Utempter Symlink Risk

Before applying this update, make sure all previously released errata relevant to your system have been applied.

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade. Only those RPMs which are currently installed will be updated. Those RPMs which are not installed but included in the list will not be updated. Note that you can also use wildcards (*.rpm) if your current directory *only* contains the desired RPMs.

Please note that this update is also available via Red Hat Network. Many people find this an easier way to apply updates. To use Red Hat Network, launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate RPMs being upgraded on your system.

If up2date fails to connect to Red Hat Network due to SSL Certificate Errors, you need to install a version of the up2date client with an updated certificate. The latest version of up2date is available from the Red Hat FTP site and may also be downloaded directly from the RHN website:

https://access.redhat.com

5. Bug IDs fixed ( for more info):

121332 - CAN-2004-0233 utempter directory traversal symlink attack

6. RPMs required:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1:

SRPMS:

i386: Available from Red Hat Network: utempter-0.5.5-1.2.1EL.0.i386.rpm

ia64: Available from Red Hat Network: utempter-0.5.5-1.2.1EL.0.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

SRPMS:

ia64: Available from Red Hat Network: utempter-0.5.5-1.2.1EL.0.ia64.rpm

Red Hat Enterprise Linux ES version 2.1:

SRPMS:

i386: Available from Red Hat Network: utempter-0.5.5-1.2.1EL.0.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

SRPMS:

i386: Available from Red Hat Network: utempter-0.5.5-1.2.1EL.0.i386.rpm

Red Hat Enterprise Linux AS version 3:

SRPMS:

i386: Available from Red Hat Network: utempter-0.5.5-1.3EL.0.i386.rpm

ia64: Available from Red Hat Network: utempter-0.5.5-1.3EL.0.ia64.rpm

ppc: Available from Red Hat Network: utempter-0.5.5-1.3EL.0.ppc.rpm

s390: Available from Red Hat Network: utempter-0.5.5-1.3EL.0.s390.rpm

s390x: Available from Red Hat Network: utempter-0.5.5-1.3EL.0.s390x.rpm

x86_64: Available from Red Hat Network: utempter-0.5.5-1.3EL.0.x86_64.rpm

Red Hat Desktop version 3:

SRPMS:

i386: Available from Red Hat Network: utempter-0.5.5-1.3EL.0.i386.rpm

x86_64: Available from Red Hat Network: utempter-0.5.5-1.3EL.0.x86_64.rpm

Red Hat Enterprise Linux ES version 3:

SRPMS:

i386: Available from Red Hat Network: utempter-0.5.5-1.3EL.0.i386.rpm

ia64: Available from Red Hat Network: utempter-0.5.5-1.3EL.0.ia64.rpm

x86_64: Available from Red Hat Network: utempter-0.5.5-1.3EL.0.x86_64.rpm

Red Hat Enterprise Linux WS version 3:

SRPMS:

i386: Available from Red Hat Network: utempter-0.5.5-1.3EL.0.i386.rpm

ia64: Available from Red Hat Network: utempter-0.5.5-1.3EL.0.ia64.rpm

x86_64: Available from Red Hat Network: utempter-0.5.5-1.3EL.0.x86_64.rpm

7. Verification:

MD5 sum Package Name 417fb9a00960adc60d2480e76a1432e9 utempter-0.5.5-1.2.1EL.0.i386.rpm 36023598fdb8c619e3a7ddf3071eeda8 utempter-0.5.5-1.2.1EL.0.ia64.rpm bfcd383f81642909da3b591dc501ea26 utempter-0.5.5-1.2.1EL.0.src.rpm 437cbd0cf70f4c106d8769022818046e utempter-0.5.5-1.3EL.0.i386.rpm 78a2997b4bfa09e8797aa8168db5ee99 utempter-0.5.5-1.3EL.0.ia64.rpm fa912c642528d6d1785245c0bed610a3 utempter-0.5.5-1.3EL.0.ppc.rpm d6bd211838e75ae01eed0ad10f638fae utempter-0.5.5-1.3EL.0.s390.rpm 95518a64083b9610d6d13d01991296cf utempter-0.5.5-1.3EL.0.s390x.rpm bb78ec4f0201e337eca2a0da85d5aa3d utempter-0.5.5-1.3EL.0.src.rpm 39e382c6a8e6a1ec5e05c5ba9bad4ee8 utempter-0.5.5-1.3EL.0.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key is available from

You can verify each package with the following command:

rpm --checksig -v

If you only wish to verify that each package has not been corrupted or tampered with, examine only the md5sum with the following command:

md5sum