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CVE-2018-20679

Published: Jan 9, 2019

Modified: Jun 9, 2025

PUBLISHED

Description

An issue was discovered in BusyBox before 1.30.0. An out of bounds read in udhcp components (consumed by the DHCP server, client, and relay) allows a remote attacker to leak sensitive information from the stack by sending a crafted DHCP message. This is related to verification in udhcp_get_option() in networking/udhcp/common.c that 4-byte options are indeed 4 bytes.

Vendor	Product	Versions
n/a	n/a	affected `n/a`

References

https://git.busybox.net/busybox/commit/?id=6d3b4bb24da9a07c263f3c1acf8df85382ff562c

x_refsource_MISC

https://busybox.net/news.html

x_refsource_MISC

https://bugs.busybox.net/show_bug.cgi?id=11506

x_refsource_MISC

vendor-advisory

x_refsource_UBUNTU

20190904 SEC Consult SA-20190904-0 :: Multiple vulnerabilities in Cisco router series RV34X, RV26X and RV16X

mailing-list

x_refsource_FULLDISC

20190904 SEC Consult SA-20190904-0 :: Multiple vulnerabilities in Cisco router series RV34X, RV26X and RV16X

mailing-list

x_refsource_BUGTRAQ

http://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html

x_refsource_MISC

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