NVD Vulnerability Detail

CVE-2019-5747

Summary	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.
Publication Date	Jan. 10, 2019, 1:29 a.m.
Registration Date	Jan. 26, 2021, 11:43 a.m.
Last Update	Nov. 21, 2024, 1:45 p.m.

Affected software configurations

Configuration1		or higher	or less	more than	less than
cpe:2.3:a:busybox:busybox::::::::			1.30.0

Configuration2	or higher	or less	more than	less than
cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::
cpe:2.3:o:canonical:ubuntu_linux:14.04::::lts:::
cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::
cpe:2.3:o:canonical:ubuntu_linux:18.10:::::::*

Related information, measures and tools

No	URL	タグ
1	http://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html	Exploit Third Party Advisory VDB Entry
2	http://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html	Exploit Third Party Advisory VDB Entry
3	http://seclists.org/fulldisclosure/2019/Sep/7	Mailing List Third Party Advisory
4	http://seclists.org/fulldisclosure/2019/Sep/7	Mailing List Third Party Advisory
5	https://bugs.busybox.net/show_bug.cgi?id=11506	Exploit Issue Tracking Third Party Advisory
6	https://bugs.busybox.net/show_bug.cgi?id=11506	Exploit Issue Tracking Third Party Advisory
7	https://git.busybox.net/busybox/commit/?id=74d9f1ba37010face4bd1449df4d60dd84450b06	Patch Third Party Advisory
8	https://git.busybox.net/busybox/commit/?id=74d9f1ba37010face4bd1449df4d60dd84450b06	Patch Third Party Advisory
9	https://seclists.org/bugtraq/2019/Sep/7	Mailing List Third Party Advisory
10	https://seclists.org/bugtraq/2019/Sep/7	Mailing List Third Party Advisory
11	https://usn.ubuntu.com/3935-1/	Third Party Advisory
12	https://usn.ubuntu.com/3935-1/	Third Party Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-125	境界外読み取り	https://cwe.mitre.org/data/definitions/125.html

JVN Vulnerability Information

BusyBox における境界外読み取りに関する脆弱性

Title	BusyBox における境界外読み取りに関する脆弱性
Summary	BusyBox には、境界外読み取りに関する脆弱性が存在します。本脆弱性は、CVE-2018-20679 に対する修正が不完全だったことに起因する脆弱性です。
Possible impacts	情報を取得される可能性があります。
Solution	ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。
Publication Date	Jan. 7, 2019, midnight
Registration Date	Feb. 25, 2019, 3:10 p.m.
Last Update	Feb. 25, 2019, 3:10 p.m.

Affected System

BusyBox

BusyBox 1.30.0 まで

CVE (情報セキュリティ共通脆弱性識別子)

No	Name	URL
Common Vulnerabilities and Exposures (CVE)
1	CVE-2019-5747	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5747
2	CVE-2019-5747	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5747
National Vulnerability Database (NVD)
3	CVE-2019-5747	https://nvd.nist.gov/vuln/detail/CVE-2019-5747
4	CVE-2019-5747	https://nvd.nist.gov/vuln/detail/CVE-2019-5747

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-125	https://cwe.mitre.org/data/definitions/125.html
2	CWE-125	https://cwe.mitre.org/data/definitions/125.html

ベンダー情報

No	Name	URL
Bugzilla
1	Bug 11506	https://bugs.busybox.net/show_bug.cgi?id=11506
2	Bug 11506	https://bugs.busybox.net/show_bug.cgi?id=11506
BusyBox
3	udhcpc: when decoding DHCP_SUBNET, ensure it is 4 bytes long	https://git.busybox.net/busybox/commit/?id=74d9f1ba37010face4bd1449df4d60dd84450b06
4	udhcpc: when decoding DHCP_SUBNET, ensure it is 4 bytes long	https://git.busybox.net/busybox/commit/?id=74d9f1ba37010face4bd1449df4d60dd84450b06

Change Log

No	Changed Details	Date of change
1	[2019年02月25日] 掲載	Feb. 25, 2019, 3:10 p.m.
1	[2019年02月25日] 掲載	Feb. 25, 2019, 3:10 p.m.