Joined: 12 May 2004
|Posted: Fri Sep 27, 2013 1:26 am Post subject: [ GLSA 201309-21 ] klibc: Command Injection
|Gentoo Linux Security Advisory
Title: klibc: Command Injection (GLSA 201309-21)
Date: September 26, 2013
A vulnerability in klibc could allow remote attackers to execute
arbitrary shell code.
klibc is a minimalistic libc used for making an initramfs.
Vulnerable: < 1.5.25
Unaffected: >= 1.5.25
Architectures: All supported architectures
The ipconfig utility in klibc writes DHCP options to
/tmp/net-$DEVICE.conf, and this file is later sourced by other scripts to
get defined variables. The options written to this file are not properly
A remote attacker could send a specially crafted DHCP reply, which could
execute arbitrary shell code with the privileges of any process which
sources DHCP options.
There is no known workaround at this time.
All klibc users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/klibc-1.5.25"