Red Hat Linux Errata Advisory
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Synopsis	New groff packages available to fix security problems

Advisory ID	RHSA-2002:004-11

Issue Date	2002-01-07

Updated On	2002-03-13

Product	Red Hat Linux

Keywords	groff security

Cross References

Obsoletes

1. Topic:

New groff packages have been made available that fix an overflow in groff.
If the printing system running this is a security issue, it is recommended
to update to the new, fixed packages.

2. Problem description:

Groff is a document formatting system. The groff preprocessor contains an
exploitable buffer overflow. If groff can be invoked within the LPRng
printing system, an attacker can gain rights as the "lp" user.

Remote exploitation may be possible if lpd is running and is accessible
remotely, and the attacker knows the name of the printer and spoolfile.

The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CAN-2002-0003 to this issue.

Thanks to zen-parse for bringing this bug to our attention.

3. Bug IDs fixed: (see bugzilla for more information)

4. Relevant releases/architectures:

Red Hat Linux 7.0 - alpha, i386
Red Hat Linux 7.1 - alpha, i386, ia64
Red Hat Linux 7.2 - i386, ia64, s390

5. RPMs required:

6. Solution:

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.

7. Verification:

MD5 sum                           Package Name
-------------------------------------------------------------------------
2d8f124e3501a67d3869b2adb0e4ae9b 7.0/en/os/SRPMS/groff-1.16-7.1.1.src.rpm
99047829eb9ebd1d4db859f3b64b8a76 7.0/en/os/alpha/groff-1.16-7.1.1.alpha.rpm
3d4a15c5644c1bd2c24dae31f1095f4d 7.0/en/os/alpha/groff-gxditview-1.16-7.1.1.alpha.rpm
10e4f6583732fbf51bc23ab186c7b7bb 7.0/en/os/alpha/groff-perl-1.16-7.1.1.alpha.rpm
75beca33b7eeb77603c86e6219e0d26e 7.0/en/os/i386/groff-1.16-7.1.1.i386.rpm
93740b2ae27732d73e6e81d369293a0b 7.0/en/os/i386/groff-gxditview-1.16-7.1.1.i386.rpm
2b36d02d479bed1ab7d58dd692dc0a51 7.0/en/os/i386/groff-perl-1.16-7.1.1.i386.rpm
1d4e9b5068fcf178ddacf032c0db523d 7.1/en/os/SRPMS/groff-1.17.2-7.0.2.src.rpm
93cbf905335c1474ed9e632c0ec83738 7.1/en/os/alpha/groff-1.17.2-7.0.2.alpha.rpm
1d837785e127b4b9dc719b1f232816c6 7.1/en/os/alpha/groff-gxditview-1.17.2-7.0.2.alpha.rpm
465db9810916d6a346b75534c8e2cdc1 7.1/en/os/alpha/groff-perl-1.17.2-7.0.2.alpha.rpm
f3181dd6c32ffc9478721244b77c89af 7.1/en/os/i386/groff-1.17.2-7.0.2.i386.rpm
70ea6d89f289177fa4291e319347b3de 7.1/en/os/i386/groff-gxditview-1.17.2-7.0.2.i386.rpm
d6d520d69decc1c2243daa8179e956d7 7.1/en/os/i386/groff-perl-1.17.2-7.0.2.i386.rpm
4f08644532e54b8c3553b04148424e56 7.1/en/os/ia64/groff-1.17.2-7.0.2.ia64.rpm
c340eacc8bc4ad85894c200ef37cb715 7.1/en/os/ia64/groff-gxditview-1.17.2-7.0.2.ia64.rpm
82f6a180010606b6f0a7bd97aab39f42 7.1/en/os/ia64/groff-perl-1.17.2-7.0.2.ia64.rpm
1d4e9b5068fcf178ddacf032c0db523d 7.2/en/os/SRPMS/groff-1.17.2-7.0.2.src.rpm
f3181dd6c32ffc9478721244b77c89af 7.2/en/os/i386/groff-1.17.2-7.0.2.i386.rpm
70ea6d89f289177fa4291e319347b3de 7.2/en/os/i386/groff-gxditview-1.17.2-7.0.2.i386.rpm
d6d520d69decc1c2243daa8179e956d7 7.2/en/os/i386/groff-perl-1.17.2-7.0.2.i386.rpm
4f08644532e54b8c3553b04148424e56 7.2/en/os/ia64/groff-1.17.2-7.0.2.ia64.rpm
c340eacc8bc4ad85894c200ef37cb715 7.2/en/os/ia64/groff-gxditview-1.17.2-7.0.2.ia64.rpm
82f6a180010606b6f0a7bd97aab39f42 7.2/en/os/ia64/groff-perl-1.17.2-7.0.2.ia64.rpm
cfaac7783c958b90d50a8c4e7f2b5ad4 7.2/en/os/s390/groff-1.17.2-7.0.2.s390.rpm
488f1e2d9cf0c0c31ceb906243583654 7.2/en/os/s390/groff-gxditview-1.17.2-7.0.2.s390.rpm
06ebd59f8752df6ffc3ea8dd61443727 7.2/en/os/s390/groff-perl-1.17.2-7.0.2.s390.rpm

These packages are GPG signed by Red Hat, Inc. for security. Our key is available at:
http://www.redhat.com/about/contact.html

You can verify each package with the following command: rpm --checksig filename

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

Note that you need RPM >= 3.0 to check GnuPG keys.

8. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0003

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