DHCP: Dhcpcd Packet Size Stack Buffer Overflow

This signature detects attempts to exploit a known vulnerability in dhcpcd. It is due to insufficient validation on packets size supplied by DHCP clients. A remote attacker impersonating a DHCP server on the adjacent network could exploit this by sending a crafted packet to the target host. Successful exploitation would allow an attacker to inject arbitrary code into the DHCP Client.

Extended Description

dhcpcd is prone to a remote stack-based buffer-overflow vulnerability because it fails to properly bounds-check user-supplied input before copying it into a fixed-length buffer. Successfully exploiting this issue allows a remote attacker to execute arbitrary code in the context of the application. Failed exploits will result in denial-of-service condition.

Affected Products

Dhcpcd dhcpcd

References

BugTraq: 53354

CVE: CVE-2012-2152

Short Name

DHCP:OPT:DHCPD-PKT-SIZE-BO

Severity

Major

Recommended

False

Recommended Action

Drop

DHCP: Dhcpcd Packet Size Stack Buffer Overflow

Extended Description

Affected Products

References

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