OpenWrt における無限ループに関する脆弱性
| Title |
OpenWrt における無限ループに関する脆弱性
|
| Summary |
OpenWrt には、無限ループ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 |
Jan. 9, 2021, midnight |
| Registration Date |
Oct. 25, 2021, 5:31 p.m. |
| Last Update |
Oct. 25, 2021, 5:31 p.m. |
|
CVSS3.0 : 警告
|
| Score |
6.5
|
| Vector |
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
|
CVSS2.0 : 注意
|
| Score |
3.3
|
| Vector |
AV:A/AC:L/Au:N/C:N/I:N/A:P |
Affected System
| OpenWrt Project |
|
OpenWrt 19.07.7 未満の 19.07.x
|
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 |
[2021年10月25日]
掲載 |
Oct. 25, 2021, 5:31 p.m. |
NVD Vulnerability Information
CVE-2021-22161
| Summary |
In OpenWrt 19.07.x before 19.07.7, when IPv6 is used, a routing loop can occur that generates excessive network traffic between an affected device and its upstream ISP's router. This occurs when a link prefix route points to a point-to-point link, a destination IPv6 address belongs to the prefix and is not a local IPv6 address, and a router advertisement is received with at least one global unique IPv6 prefix for which the on-link flag is set. This affects the netifd and odhcp6c packages.
|
| Publication Date |
Feb. 8, 2021, 8:15 a.m. |
| Registration Date |
Feb. 8, 2021, 12:01 p.m. |
| Last Update |
Nov. 21, 2024, 2:49 p.m. |
Affected software configurations
| Configuration1 |
or higher |
or less |
more than |
less than |
| cpe:2.3:o:openwrt:openwrt:*:*:*:*:*:*:*:* |
19.07.0 |
19.07.6 |
|
|
Related information, measures and tools
Common Vulnerabilities List