CVE-2019-5747

Public Exploit

Description

An issue was discovered in BusyBox through 1.30.0. An out of bounds read in udhcp components (consumed by the DHCP client, server, and/or relay) might allow a remote attacker to leak sensitive information from the stack by sending a crafted DHCP message. This is related to assurance of a 4-byte length when decoding DHCP_SUBNET. NOTE: this issue exists because of an incomplete fix for CVE-2018-20679.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.38%
Vendor Advisory ubuntu.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://git.busybox.net/busybox/commit/?id=74d9f1ba37010face4bd1449df4d60dd84450b06 third party advisory patch
https://bugs.busybox.net/show_bug.cgi?id=11506 issue tracking exploit third party advisory
https://usn.ubuntu.com/3935-1/ third party advisory vendor advisory
http://seclists.org/fulldisclosure/2019/Sep/7 third party advisory mailing list
https://seclists.org/bugtraq/2019/Sep/7 third party advisory mailing list
http://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html exploit vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2019-5747?
CVE-2019-5747 has been scored as a high severity vulnerability.
How to fix CVE-2019-5747?
To fix CVE-2019-5747, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-5747 being actively exploited in the wild?
It is possible that CVE-2019-5747 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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