DHCP client daemon dhcpcd .info file command execution

dhcpcd-info-execute-commands (10663) The risk level is classified as HighHigh Risk

Description:

dhcpcd could allow a remote attacker to execute arbitrary commands on the system, caused by a vulnerability in the .info file. dhcpcd fails to properly filter shell metacharacters. A remote attacker in control of a malicious DHCP server could supply a specially-crafted command to the vulnerable dhcpcd client to execute arbitrary commands on the system with root privileges.


Consequences:

Gain Access

Remedy:

Upgrade to the latest version of dhcpcd (1.3.22-p13 or later), available from the dhcpcd Download Web page. See References.

For Debian GNU/Linux:
Upgrade to the latest dhcpcd package, as listed below. Refer to DSA-219-1 for more information. See References.

Debian GNU/Linux 2.2 (potato): 1.3.17pl2-8.1 or later

For Gentoo Linux:
Upgrade versions net-misc/dhcpcd-1.3.20_p0-r1 or earlier, as listed in Gentoo Linux Security Announcement 200301-3 See References.

For Mandrake Linux:
Upgrade to the latest dhcpcd package, as listed below. Refer to MandrakeSoft Security Advisory MDKSA-2001:003:dhcpcd for more information. See References.

Mandrake Linux 7.2, 8.0, 8.1, 8.2, 9.0, Multi Network Firewall 8.2, and Single Network Firewall 7.2: 1.3.22pl4-1.1mdk or later

For other distributions:
Contact your vendor for upgrade or patch information.

References:

Platforms Affected:

  • Debian Debian Linux 2.2
  • Gentoo Linux
  • MandrakeSoft Mandrake Linux 7.2
  • MandrakeSoft Mandrake Linux 8.0
  • MandrakeSoft Mandrake Linux 8.1
  • MandrakeSoft Mandrake Linux 8.2
  • MandrakeSoft Mandrake Linux 9.0
  • MandrakeSoft Mandrake Multi Network Firewall 8.2
  • MandrakeSoft Mandrake Single Network Firewall 7.2
  • PhysTech DHCPd prior to 1.3.22-p12

Reported:

Nov 18, 2002

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