NVD Vulnerability Detail

CVE-2020-3511

Summary	A vulnerability in the ISDN subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient input validation when the ISDN Q.931 messages are processed. An attacker could exploit this vulnerability by sending a malicious ISDN Q.931 message to an affected device. A successful exploit could allow the attacker to cause the process to crash, resulting in a reload of the affected device.
Publication Date	Sept. 25, 2020, 3:15 a.m.
Registration Date	Jan. 26, 2021, 11:57 a.m.
Last Update	Nov. 21, 2024, 2:31 p.m.

CVSS3.1 : HIGH
スコア	7.4
Vector	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
攻撃元区分(AV)	隣接
攻撃条件の複雑さ(AC)	低
攻撃に必要な特権レベル(PR)	不要
利用者の関与(UI)	不要
影響の想定範囲(S)	変更あり
機密性への影響(C)	なし
完全性への影響(I)	なし
可用性への影響(A)	高

CVSS2.0 : MEDIUM
Score	6.1
Vector	AV:A/AC:L/Au:N/C:N/I:N/A:C
攻撃元区分(AV)	隣接
攻撃条件の複雑さ(AC)	低
攻撃前の認証要否(Au)	不要
機密性への影響(C)	なし
完全性への影響(I)	なし
可用性への影響(A)	高
Get all privileges.	いいえ
Get user privileges	いいえ
Get other privileges	いいえ
User operation required	いいえ

Affected software configurations

Configuration1		or higher	or less	more than	less than
cpe:2.3:o:cisco:ios_xe:15.1\(4\)m:::::::*
execution environment
1	cpe:2.3:h:cisco:1100-4g_integrated_services_router:-:::::::*
2	cpe:2.3:h:cisco:1100-4gltegb_integrated_services_router:-:::::::*
3	cpe:2.3:h:cisco:1100-4gltena_integrated_services_router:-:::::::*
4	cpe:2.3:h:cisco:1100-4p_integrated_services_router:-:::::::*
5	cpe:2.3:h:cisco:1100-6g_integrated_services_router:-:::::::*
6	cpe:2.3:h:cisco:1100-8p_integrated_services_router:-:::::::*
7	cpe:2.3:h:cisco:1100-lte_integrated_services_router:-:::::::*
8	cpe:2.3:h:cisco:1100_integrated_services_router:-:::::::*
9	cpe:2.3:h:cisco:1101-4p_integrated_services_router:-:::::::*
10	cpe:2.3:h:cisco:1101_integrated_services_router:-:::::::*
11	cpe:2.3:h:cisco:1109-2p_integrated_services_router:-:::::::*
12	cpe:2.3:h:cisco:1109-4p_integrated_services_router:-:::::::*
13	cpe:2.3:h:cisco:1109_integrated_services_router:-:::::::*
14	cpe:2.3:h:cisco:1111x-8p_integrated_services_router:-:::::::*
15	cpe:2.3:h:cisco:1111x_integrated_services_router:-:::::::*
16	cpe:2.3:h:cisco:111x_integrated_services_router:-:::::::*
17	cpe:2.3:h:cisco:1120_integrated_services_router:-:::::::*
18	cpe:2.3:h:cisco:1160_integrated_services_router:-:::::::*
19	cpe:2.3:h:cisco:422_integrated_services_router:-:::::::*
20	cpe:2.3:h:cisco:4321\/k9-rf_integrated_services_router:-:::::::*
21	cpe:2.3:h:cisco:4321\/k9-ws_integrated_services_router:-:::::::*
22	cpe:2.3:h:cisco:4321\/k9_integrated_services_router:-:::::::*
23	cpe:2.3:h:cisco:4331\/k9-rf_integrated_services_router:-:::::::*
24	cpe:2.3:h:cisco:4331\/k9-ws_integrated_services_router:-:::::::*
25	cpe:2.3:h:cisco:4331\/k9_integrated_services_router:-:::::::*
26	cpe:2.3:h:cisco:4351\/k9-rf_integrated_services_router:-:::::::*
27	cpe:2.3:h:cisco:4351\/k9-ws_integrated_services_router:-:::::::*
28	cpe:2.3:h:cisco:4351\/k9_integrated_services_router:-:::::::*
29	cpe:2.3:h:cisco:4431_integrated_services_router:-:::::::*
30	cpe:2.3:h:cisco:4461_integrated_services_router:-:::::::*
31	cpe:2.3:h:cisco:asr_1000-x:-:::::::*
32	cpe:2.3:h:cisco:asr_1001:-:::::::*
33	cpe:2.3:h:cisco:asr_1001-x:-:::::::*
34	cpe:2.3:h:cisco:asr_1002:-:::::::*
35	cpe:2.3:h:cisco:asr_1002-x:-:::::::*
36	cpe:2.3:h:cisco:asr_1004:-:::::::*
37	cpe:2.3:h:cisco:asr_1006:-:::::::*
38	cpe:2.3:h:cisco:asr_1013:-:::::::*
39	cpe:2.3:h:cisco:asr1001-hx:-:::::::*
40	cpe:2.3:h:cisco:asr1001-hx-rf:-:::::::*
41	cpe:2.3:h:cisco:asr1001-x:-:::::::*
42	cpe:2.3:h:cisco:asr1001-x-rf:-:::::::*
43	cpe:2.3:h:cisco:asr1001-x-ws:-:::::::*
44	cpe:2.3:h:cisco:asr1002-hx:-:::::::*
45	cpe:2.3:h:cisco:asr1002-hx-rf:-:::::::*
46	cpe:2.3:h:cisco:asr1002-hx-ws:-:::::::*
47	cpe:2.3:h:cisco:asr1002-x:-:::::::*
48	cpe:2.3:h:cisco:asr1002-x-rf:-:::::::*
49	cpe:2.3:h:cisco:asr1002-x-ws:-:::::::*
50	cpe:2.3:h:cisco:csr1000v:-:::::::*

Related information, measures and tools

No	URL	refsource	タグ
1	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-isdn-q931-dos-67eUZBTf		Vendor Advisory
2	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-isdn-q931-dos-67eUZBTf		Vendor Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-20	不適切な入力確認	https://cwe.mitre.org/data/definitions/20.html

JVN Vulnerability Information

Cisco IOS および IOS XE ソフトウェアにおける入力確認に関する脆弱性

Title	Cisco IOS および IOS XE ソフトウェアにおける入力確認に関する脆弱性
Summary	Cisco IOS および IOS XE ソフトウェアには、入力確認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	Sept. 24, 2020, midnight
Registration Date	April 20, 2021, 11:24 a.m.
Last Update	April 20, 2021, 11:24 a.m.

Affected System

シスコシステムズ

Cisco IOS XE

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-2020-3511	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-3511
National Vulnerability Database (NVD)
2	CVE-2020-3511	https://nvd.nist.gov/vuln/detail/CVE-2020-3511

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-20	https://jvndb.jvn.jp/ja/cwe/CWE-20.html

ベンダー情報

No	Name	URL
Cisco Security Advisory
1	cisco-sa-iosxe-isdn-q931-dos-67eUZBTf	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-isdn-q931-dos-67eUZBTf

Change Log

No	Changed Details	Date of change
1	[2021年04月20日] 掲載	April 20, 2021, 11:24 a.m.

Configuration1		or higher	or less	more than	less than
cpe:2.3:o:cisco:ios_xe:15.1\(4\)m:::::::*
execution environment
1	cpe:2.3:h:cisco:1100-4g_integrated_services_router:-:::::::*
2	cpe:2.3:h:cisco:1100-4gltegb_integrated_services_router:-:::::::*
3	cpe:2.3:h:cisco:1100-4gltena_integrated_services_router:-:::::::*
4	cpe:2.3:h:cisco:1100-4p_integrated_services_router:-:::::::*
5	cpe:2.3:h:cisco:1100-6g_integrated_services_router:-:::::::*
6	cpe:2.3:h:cisco:1100-8p_integrated_services_router:-:::::::*
7	cpe:2.3:h:cisco:1100-lte_integrated_services_router:-:::::::*
8	cpe:2.3:h:cisco:1100_integrated_services_router:-:::::::*
9	cpe:2.3:h:cisco:1101-4p_integrated_services_router:-:::::::*
10	cpe:2.3:h:cisco:1101_integrated_services_router:-:::::::*
11	cpe:2.3:h:cisco:1109-2p_integrated_services_router:-:::::::*
12	cpe:2.3:h:cisco:1109-4p_integrated_services_router:-:::::::*
13	cpe:2.3:h:cisco:1109_integrated_services_router:-:::::::*
14	cpe:2.3:h:cisco:1111x-8p_integrated_services_router:-:::::::*
15	cpe:2.3:h:cisco:1111x_integrated_services_router:-:::::::*
16	cpe:2.3:h:cisco:111x_integrated_services_router:-:::::::*
17	cpe:2.3:h:cisco:1120_integrated_services_router:-:::::::*
18	cpe:2.3:h:cisco:1160_integrated_services_router:-:::::::*
19	cpe:2.3:h:cisco:422_integrated_services_router:-:::::::*
20	cpe:2.3:h:cisco:4321\/k9-rf_integrated_services_router:-:::::::*
21	cpe:2.3:h:cisco:4321\/k9-ws_integrated_services_router:-:::::::*
22	cpe:2.3:h:cisco:4321\/k9_integrated_services_router:-:::::::*
23	cpe:2.3:h:cisco:4331\/k9-rf_integrated_services_router:-:::::::*
24	cpe:2.3:h:cisco:4331\/k9-ws_integrated_services_router:-:::::::*
25	cpe:2.3:h:cisco:4331\/k9_integrated_services_router:-:::::::*
26	cpe:2.3:h:cisco:4351\/k9-rf_integrated_services_router:-:::::::*
27	cpe:2.3:h:cisco:4351\/k9-ws_integrated_services_router:-:::::::*
28	cpe:2.3:h:cisco:4351\/k9_integrated_services_router:-:::::::*
29	cpe:2.3:h:cisco:4431_integrated_services_router:-:::::::*
30	cpe:2.3:h:cisco:4461_integrated_services_router:-:::::::*
31	cpe:2.3:h:cisco:asr_1000-x:-:::::::*
32	cpe:2.3:h:cisco:asr_1001:-:::::::*
33	cpe:2.3:h:cisco:asr_1001-x:-:::::::*
34	cpe:2.3:h:cisco:asr_1002:-:::::::*
35	cpe:2.3:h:cisco:asr_1002-x:-:::::::*
36	cpe:2.3:h:cisco:asr_1004:-:::::::*
37	cpe:2.3:h:cisco:asr_1006:-:::::::*
38	cpe:2.3:h:cisco:asr_1013:-:::::::*
39	cpe:2.3:h:cisco:asr1001-hx:-:::::::*
40	cpe:2.3:h:cisco:asr1001-hx-rf:-:::::::*
41	cpe:2.3:h:cisco:asr1001-x:-:::::::*
42	cpe:2.3:h:cisco:asr1001-x-rf:-:::::::*
43	cpe:2.3:h:cisco:asr1001-x-ws:-:::::::*
44	cpe:2.3:h:cisco:asr1002-hx:-:::::::*
45	cpe:2.3:h:cisco:asr1002-hx-rf:-:::::::*
46	cpe:2.3:h:cisco:asr1002-hx-ws:-:::::::*
47	cpe:2.3:h:cisco:asr1002-x:-:::::::*
48	cpe:2.3:h:cisco:asr1002-x-rf:-:::::::*
49	cpe:2.3:h:cisco:asr1002-x-ws:-:::::::*
50	cpe:2.3:h:cisco:csr1000v:-:::::::*