Firefox における同一生成元ポリシー違反に関する脆弱性
| Title |
Firefox における同一生成元ポリシー違反に関する脆弱性
|
| Summary |
Firefox には、同一生成元ポリシー違反に関する脆弱性が存在します。
|
| Possible impacts |
情報を取得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 23, 2021, midnight |
| Registration Date |
Dec. 6, 2021, 3:26 p.m. |
| Last Update |
Dec. 6, 2021, 3:26 p.m. |
|
CVSS3.0 : 警告
|
| Score |
6.5
|
| Vector |
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
|
CVSS2.0 : 警告
|
| Score |
4.3
|
| Vector |
AV:N/AC:M/Au:N/C:P/I:N/A:N |
Affected System
| Mozilla Foundation |
|
Mozilla Firefox 87 未満
|
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12月06日]
掲載 |
Dec. 6, 2021, 2:17 p.m. |
NVD Vulnerability Information
CVE-2021-23986
| Summary |
A malicious extension with the 'search' permission could have installed a new search engine whose favicon referenced a cross-origin URL. The response to this cross-origin request could have been read by the extension, allowing a same-origin policy bypass by the extension, which should not have cross-origin permissions. This cross-origin request was made without cookies, so the sensitive information disclosed by the violation was limited to local-network resources or resources that perform IP-based authentication. This vulnerability affects Firefox < 87.
|
| Publication Date |
March 31, 2021, 11:15 p.m. |
| Registration Date |
April 1, 2021, 10:02 a.m. |
| Last Update |
Nov. 21, 2024, 2:52 p.m. |
Affected software configurations
| Configuration1 |
or higher |
or less |
more than |
less than |
| cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* |
|
|
|
87.0 |
Related information, measures and tools
Common Vulnerabilities List