National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-5747 Detail

Current Description

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.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N (V3 legend)
Impact Score: 3.6
Exploitability Score: 3.9


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 5.0 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://bugs.busybox.net/show_bug.cgi?id=11506 Exploit Issue Tracking Third Party Advisory
https://git.busybox.net/busybox/commit/?id=74d9f1ba37010face4bd1449df4d60dd84450b06 Patch Third Party Advisory
https://usn.ubuntu.com/3935-1/ Third Party Advisory

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.3

Configuration 1 ( hide )
 cpe:/a:busybox:busybox
     Show Matching CPE(s)
Up to (including)
1.30.0

Configuration 2 ( hide )
 cpe:/o:canonical:ubuntu_linux:14.04::~~lts~~~
     Show Matching CPE(s)
 cpe:/o:canonical:ubuntu_linux:16.04::~~lts~~~
     Show Matching CPE(s)
 cpe:/o:canonical:ubuntu_linux:18.04::~~lts~~~
     Show Matching CPE(s)
 cpe:/o:canonical:ubuntu_linux:18.10
     Show Matching CPE(s)


Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-5747
NVD Published Date:
01/09/2019
NVD Last Modified:
04/23/2019