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Cisco IOS ソフトウェアおよび Cisco 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 ソフトウェアおよび Cisco 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 ソフトウェアおよび Cisco 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。 ベンダは、本脆弱性を Bug ID CSCvg62754 として公開しています。

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 March 28, 2018, midnight
Registration Date May 25, 2018, 2:38 p.m.
Last Update May 25, 2018, 2:38 p.m.
CVSS3.0 : 重要
Score 8.6
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CVSS2.0 : 危険
Score 7.8
Vector AV:N/AC:L/Au:N/C:N/I:N/A:C
Affected System
シスコシステムズ
Cisco IOS 
Cisco IOS XE 
CVE (情報セキュリティ 共通脆弱性識別子)
CWE (共通脆弱性タイプ一覧)
ベンダー情報
その他
Change Log
No Changed Details Date of change
1 [2018年05月25日]
  掲載		 May 25, 2018, 2:38 p.m.
NVD Vulnerability Information
CVE-2018-0173
Summary

A vulnerability in the Cisco IOS Software and Cisco IOS XE Software function that restores encapsulated option 82 information in DHCP Version 4 (DHCPv4) packets could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a Relay Reply denial of service (DoS) condition. The vulnerability exists because the affected software performs incomplete input validation of encapsulated option 82 information that it receives in DHCPOFFER messages from DHCPv4 servers. An attacker could exploit this vulnerability by sending a crafted DHCPv4 packet to an affected device, which the device would then forward to a DHCPv4 server. When the affected software processes the option 82 information that is encapsulated in the response from the server, an error could occur. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCvg62754.

Publication Date March 29, 2018, 7:29 a.m.
Registration Date March 1, 2021, 6:35 p.m.
Last Update Nov. 21, 2024, 12:37 p.m.
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:o:cisco:ios:denali-16.3.4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:denali-16.3.4:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:cisco:4321_integrated_services_router:-:*:*:*:*:*:*:*
2 cpe:2.3:h:cisco:4331_integrated_services_router:-:*:*:*:*:*:*:*
3 cpe:2.3:h:cisco:4351_integrated_services_router:-:*:*:*:*:*:*:*
4 cpe:2.3:h:cisco:4431_integrated_services_router:-:*:*:*:*:*:*:*
5 cpe:2.3:h:cisco:4451-x_integrated_services_router:-:*:*:*:*:*:*:*
6 cpe:2.3:h:cisco:asr_1000_series_route_processor_\(rp2\):-:*:*:*:*:*:*:*
7 cpe:2.3:h:cisco:asr_1000_series_route_processor_\(rp3\):-:*:*:*:*:*:*:*
8 cpe:2.3:h:cisco:asr_1001-hx:-:*:*:*:*:*:*:*
9 cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:*
10 cpe:2.3:h:cisco:asr_1002-hx:-:*:*:*:*:*:*:*
11 cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:*
12 cpe:2.3:h:cisco:cloud_services_router_1000v:-:*:*:*:*:*:*:*
Configuration2 or higher or less more than less than
cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:* 15.2\(6\)e0a
cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:* 15.2\(6\)e0a
execution environment
1 cpe:2.3:h:rockwellautomation:allen-bradley_armorstratix_5700:-:*:*:*:*:*:*:*
2 cpe:2.3:h:rockwellautomation:allen-bradley_stratix_5400:-:*:*:*:*:*:*:*
3 cpe:2.3:h:rockwellautomation:allen-bradley_stratix_5410:-:*:*:*:*:*:*:*
4 cpe:2.3:h:rockwellautomation:allen-bradley_stratix_5700:-:*:*:*:*:*:*:*
5 cpe:2.3:h:rockwellautomation:allen-bradley_stratix_8000:-:*:*:*:*:*:*:*
Configuration3 or higher or less more than less than
cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:* 15.2\(4a\)ea5
cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:* 15.2\(4a\)ea5
execution environment
1 cpe:2.3:h:rockwellautomation:allen-bradley_stratix_8300:-:*:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List