NVD Vulnerability Detail

CVE-2020-1730

Summary	A flaw was found in libssh versions before 0.8.9 and before 0.9.4 in the way it handled AES-CTR (or DES ciphers if enabled) ciphers. The server or client could crash when the connection hasn't been fully initialized and the system tries to cleanup the ciphers when closing the connection. The biggest threat from this vulnerability is system availability.
Publication Date	April 14, 2020, 4:15 a.m.
Registration Date	Jan. 26, 2021, 11:54 a.m.
Last Update	Nov. 21, 2024, 2:11 p.m.

Affected software configurations

Configuration2	or higher	or less	more than	less than
cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::
cpe:2.3:a:netapp:cloud_backup:-:::::::*
cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
cpe:2.3:o:canonical:ubuntu_linux:19.10:::::::*
cpe:2.3:o:fedoraproject:fedora:31:::::::*
cpe:2.3:o:fedoraproject:fedora:32:::::::*

Configuration3		or higher	or less	more than	less than
cpe:2.3:a:oracle:mysql_workbench::::::::			8.0.21

Related information, measures and tools

No	URL	タグ
1	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1730	Issue Tracking Third Party Advisory
2	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1730	Issue Tracking Third Party Advisory
3	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2A7BIFKUYIYKTY7FX4BEWVC2OHS5DPOU/
4	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2A7BIFKUYIYKTY7FX4BEWVC2OHS5DPOU/
5	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VLSWHBQ3EPKGTGLQNH554Z746BJ3C554/
6	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VLSWHBQ3EPKGTGLQNH554Z746BJ3C554/
7	https://security.netapp.com/advisory/ntap-20200424-0001/	Third Party Advisory
8	https://security.netapp.com/advisory/ntap-20200424-0001/	Third Party Advisory
9	https://usn.ubuntu.com/4327-1/	Third Party Advisory
10	https://usn.ubuntu.com/4327-1/	Third Party Advisory
11	https://www.libssh.org/security/advisories/CVE-2020-1730.txt	Vendor Advisory
12	https://www.libssh.org/security/advisories/CVE-2020-1730.txt	Vendor Advisory
13	https://www.oracle.com/security-alerts/cpuoct2020.html	Patch Third Party Advisory
14	https://www.oracle.com/security-alerts/cpuoct2020.html	Patch Third Party Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-476	NULL ポインタデリファレンス	https://cwe.mitre.org/data/definitions/476.html

JVN Vulnerability Information

libssh におけるリソースの枯渇に関する脆弱性

Title	libssh におけるリソースの枯渇に関する脆弱性
Summary	libssh には、リソースの枯渇に関する脆弱性が存在します。
Possible impacts	サービス運用妨害 (DoS) 状態に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	Feb. 12, 2020, midnight
Registration Date	April 30, 2020, 6:18 p.m.
Last Update	April 30, 2020, 6:18 p.m.

Affected System

レッドハット

Red Hat Enterprise Linux

Red Hat Virtualization

libssh

libssh 0.8.9 未満

libssh 0.9.4 未満

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-2020-1730	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-1730
libssh
2	CVE-2020-1730	https://www.libssh.org/security/advisories/CVE-2020-1730.txt
National Vulnerability Database (NVD)
3	CVE-2020-1730	https://nvd.nist.gov/vuln/detail/CVE-2020-1730

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-400	https://cwe.mitre.org/data/definitions/400.html

ベンダー情報

No	Name	URL
Red Hat Bugzilla
1	Bug 1801998	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1730

Change Log

No	Changed Details	Date of change
1	[2020年04月30日] 掲載	April 30, 2020, 6:18 p.m.

Configuration2	or higher	or less	more than	less than
cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::
cpe:2.3:a:netapp:cloud_backup:-:::::::*
cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
cpe:2.3:o:canonical:ubuntu_linux:19.10:::::::*
cpe:2.3:o:fedoraproject:fedora:31:::::::*
cpe:2.3:o:fedoraproject:fedora:32:::::::*