DHCP: ISC DHCP dhclient pretty_print_option Stack Buffer Overflow
This detects attempt to exploit a stack-based buffer overflow vulnerability which has been reported in ISC DHCP dhclient. A remote attacker on the local network can exploit this vulnerability by sending a malicious response to a vulnerable client. Successful exploitation could result in the execution of arbitrary code under the context of the dhclient process.
Extended Description
Failure to properly bounds-check a buffer used for processing DHCP options allows a malicious server (or an entity masquerading as a server) to cause a buffer overflow (and resulting crash) in dhclient by sending a response containing a specially constructed options section. Affects ISC DHCP versions 4.1.0 -> 4.1-ESV-R15, 4.2.0 -> 4.2.8, 4.3.0 -> 4.3.6, 4.4.0
Affected Products
Isc dhcp
References
CVE: CVE-2018-5732
Short Name
DHCP:ISC-PRETTY-PRINT-BO
Severity
Major
Recommended
True
Recommended Action
Drop
Category
DHCP
Keywords
Buffer CVE-2018-5732 DHCP ISC Overflow Stack dhclient pretty_print_option
Release Date
04/05/2018
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3415
Port
UDP/546
False Positive
Unknown
Vendors
Isc
CVSS Score
5.0