CVE-2018-0136
| Summary |
A vulnerability in the IPv6 subsystem of Cisco IOS XR Software Release 5.3.4 for the Cisco Aggregation Services Router (ASR) 9000 Series could allow an unauthenticated, remote attacker to trigger a reload of one or more Trident-based line cards, resulting in a denial of service (DoS) condition. The vulnerability is due to incorrect handling of IPv6 packets with a fragment header extension. An attacker could exploit this vulnerability by sending IPv6 packets designed to trigger the issue either to or through the Trident-based line card. A successful exploit could allow the attacker to trigger a reload of Trident-based line cards, resulting in a DoS during the period of time the line card takes to restart. This vulnerability affects Cisco Aggregation Services Router (ASR) 9000 Series when the following conditions are met: The router is running Cisco IOS XR Software Release 5.3.4, and the router has installed Trident-based line cards that have IPv6 configured. A software maintenance upgrade (SMU) has been made available that addresses this vulnerability. The fix has also been incorporated into service pack 7 for Cisco IOS XR Software Release 5.3.4. Cisco Bug IDs: CSCvg46800.
|
| Publication Date |
Feb. 1, 2018, 5:29 a.m. |
| Registration Date |
March 1, 2021, 6:35 p.m. |
| Last Update |
Nov. 21, 2024, 12:37 p.m. |
|
CVSS3.1 : HIGH
|
| スコア |
8.6
|
| Vector |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
| 攻撃元区分(AV) |
ネットワーク |
| 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 : HIGH
|
| Score |
7.8
|
| Vector |
AV:N/AC:L/Au:N/C:N/I:N/A:C |
| 攻撃元区分(AV) |
ネットワーク |
| 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_xr:5.3.4:*:*:*:*:*:*:* |
|
|
|
|
| execution environment |
| 1 |
cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:*:* |
| 2 |
cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:* |
| 3 |
cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:* |
| 4 |
cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:* |
| 5 |
cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:*:* |
| 6 |
cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:*:* |
| 7 |
cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:* |
| 8 |
cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:* |
Related information, measures and tools
Common Vulnerabilities List
JVN Vulnerability Information
Cisco IOS XR ソフトウェアにおける入力確認に関する脆弱性
| Title |
Cisco IOS XR ソフトウェアにおける入力確認に関する脆弱性
|
| Summary |
Cisco IOS XR 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 CSCvg46800 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 |
Jan. 31, 2018, midnight |
| Registration Date |
March 14, 2018, 5:24 p.m. |
| Last Update |
March 14, 2018, 5:24 p.m. |
Affected System
| シスコシステムズ |
|
Cisco IOS XR 5.3.4
|
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
Change Log
| No |
Changed Details |
Date of change |
| 1 |
[2018年03月14日]
掲載 |
March 14, 2018, 5:24 p.m. |