Bug 1667067 (CVE-2019-5747) - CVE-2019-5747 busybox: Out of bounds read in udhcp components resulting in information disclosure
Summary: CVE-2019-5747 busybox: Out of bounds read in udhcp components resulting in in...
Alias: CVE-2019-5747
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1667069
Blocks: 1666670
TreeView+ depends on / blocked
Reported: 2019-01-17 11:17 UTC by Dhananjay Arunesh
Modified: 2021-02-16 22:31 UTC (History)
3 users (show)

Fixed In Version:
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Last Closed: 2019-01-22 14:10:55 UTC

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Description Dhananjay Arunesh 2019-01-17 11:17:40 UTC
An issue was discovered in BusyBox through 1.30.0. An out of bounds read in udhcp components (consumed by the DHCP server, client, 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.
Upstream issue:
Upstream patch:

Comment 1 Dhananjay Arunesh 2019-01-17 11:17:59 UTC
Created busybox tracking bugs for this issue:

Affects: fedora-all [bug 1667069]

Comment 2 Stefan Cornelius 2019-01-22 14:09:29 UTC

This issue did not affect the versions of busybox as shipped with Red Hat Enterprise Linux 5 and 6.

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