Gentoo Information for VU#628849

ptrace contains vulnerability allowing for local root compromise

Status

Affected

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Vendor References

None

Addendum

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GENTOO LINUX SECURITY ANNOUNCEMENT 200303-17
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PACKAGE : kernel
SUMMARY : ptrace flaw
DATE : 2003-03-21 08:59 UTC
EXPLOIT : local
VERSIONS AFFECTED : All except 2.5
FIXED VERSION : Kernels with patch applied
CVE : CAN-2003-0127

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- From advisory:

"The Linux 2.2 and Linux 2.4 kernels have a flaw in ptrace. This hole
allows local users to obtain full privileges. Remote exploitation of
this hole is not possible. Linux 2.5 is not believed to be vulnerable."

Read the full advisory at:
http://marc.theaimsgroup.com/?l=linux-kernel&m=104791735604202&w=2

SOLUTION

It is recommended that all Gentoo Linux users upgrade their kernels.

If you are running any of gentoo-sources, gs-sources, pfeifer-sources
sparc-sources or xfs-sources updates are available. Sync your tree and
run emerge <package> to install the latest version of the package. Then
compile and install your new kernel and reboot.

If you are using an other kernel package which hasn't been updated or
download your own sources you can download a patch from
http://cvs.gentoo.org/~aliz/linux-2.4.20-ptrace.patch
and manually patch your kernel.

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aliz@gentoo.org - GnuPG key is available at http://cvs.gentoo.org/~aliz
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