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[ GLSA 200907-12 ] ISC DHCP: dhcpclient Remote execution of arbitrary code
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PostPosted: Tue Jul 14, 2009 7:26 pm    Post subject: [ GLSA 200907-12 ] ISC DHCP: dhcpclient Remote execution of Reply with quote

Gentoo Linux Security Advisory

Title: ISC DHCP: dhcpclient Remote execution of arbitrary code (GLSA 200907-12)
Severity: high
Exploitable: remote
Date: July 14, 2009
Bug(s): #277729
ID: 200907-12

Synopsis

A buffer overflow in dhclient as included in the ISC DHCP implementation allows for the remote execution of arbitrary code with root privileges.

Background

ISC DHCP is the reference implementation of the Dynamic Host Configuration Protocol as specified in RFC 2131.

Affected Packages

Package: net-misc/dhcp
Vulnerable: < 3.1.1-r1
Unaffected: >= 3.1.1-r1
Architectures: All supported architectures


Description

The Mandriva Linux Engineering Team has reported a stack-based buffer overflow in the subnet-mask handling of dhclient.

Impact

A remote attacker might set up a rogue DHCP server in a victim's local network, possibly leading to the execution of arbitrary code with root privileges.

Workaround

There is no known workaround at this time.

Resolution

All ISC DHCP users should upgrade to the latest version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/dhcp-3.1.1-r1"


References

CVE-2009-0692
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