NVD Vulnerability Detail
Search Exploit, PoC
CVE-2015-7576
Summary

The http_basic_authenticate_with method in actionpack/lib/action_controller/metal/http_authentication.rb in the Basic Authentication implementation in Action Controller in Ruby on Rails before 3.2.22.1, 4.0.x and 4.1.x before 4.1.14.1, 4.2.x before 4.2.5.1, and 5.x before 5.0.0.beta1.1 does not use a constant-time algorithm for verifying credentials, which makes it easier for remote attackers to bypass authentication by measuring timing differences.

Publication Date Feb. 16, 2016, 11:59 a.m.
Registration Date Jan. 26, 2021, 2:56 p.m.
Last Update Nov. 21, 2024, 11:37 a.m.
CVSS3.0 : LOW
スコア 3.7
Vector CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
攻撃元区分(AV) ネットワーク
攻撃条件の複雑さ(AC) 高
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) 変更なし
機密性への影響(C) 低
完全性への影響(I) なし
可用性への影響(A) なし
CVSS2.0 : MEDIUM
Score 4.3
Vector AV:N/AC:M/Au:N/C:P/I:N/A:N
攻撃元区分(AV) ネットワーク
攻撃条件の複雑さ(AC) 中
攻撃前の認証要否(Au) 不要
機密性への影響(C) 低
完全性への影響(I) なし
可用性への影響(A) なし
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:a:rubyonrails:ruby_on_rails:4.0.13:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:ruby_on_rails:4.0.13:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:ruby_on_rails:4.0.12:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:ruby_on_rails:4.0.10:rc2:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:ruby_on_rails:4.0.11.1:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:ruby_on_rails:4.0.11:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:ruby_on_rails:4.1.11:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:ruby_on_rails:*:*:*:*:*:*:*:* 3.2.22
cpe:2.3:a:rubyonrails:rails:4.0.0:-:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.0.1:-:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.0.2:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.0.6:rc3:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.0:beta1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.0:beta2:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.0:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.0:rc2:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.2:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.2:rc2:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.2:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.2:rc3:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.6:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.6:rc2:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.6:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.9:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.9:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.10:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.10:rc2:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.10:rc3:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.10:rc4:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.10:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.12:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.12:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.13:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.13:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.14:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.14:rc2:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.14:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.2.0:beta1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.2.0:beta2:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.2.0:beta3:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.2.0:beta4:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.2.0:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.2.0:rc2:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.2.0:rc3:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.2.0:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.2.1:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.2.1:rc2:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.2.1:rc3:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.2.1:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.2.1:rc4:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.2.3:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.2.3:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.2.4:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.2.4:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.2.5:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.2.5:rc2:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.2.5:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:5.0.0:beta1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.0.7:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.0.8:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.0.9:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.1:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.3:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.4:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.5:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.7:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.7.1:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.8:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.2.2:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.0.0:beta:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.0.1:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.0.1:rc2:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.0.1:rc3:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.0.1:rc4:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.0.4:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.0.4:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.0.6:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.0.6:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.0.6:rc2:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.0.3:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.0.5:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.0.10:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.0.10:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:4.1.0:-:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List
JVN Vulnerability Information
Ruby on Rails の Action Controller の Basic 認証の実装における認証を回避される脆弱性
Title Ruby on Rails の Action Controller の Basic 認証の実装における認証を回避される脆弱性
Summary

Ruby on Rails の Action Controller の Basic 認証の実装の actionpack/lib/action_controller/metal/http_authentication.rb の http_basic_authenticate_with メソッドは、認証情報の検証に定数時間アルゴリズムを使用しないため、認証を回避される脆弱性が存在します。 補足情報 : CWE による脆弱性タイプは、CWE-254: Security Features (セキュリティ機能) と識別されています。 http://cwe.mitre.org/data/definitions/254.html

Possible impacts 第三者により、タイミングの違いを計測されることで、認証を回避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 Oct. 29, 2015, midnight
Registration Date March 15, 2016, 2:33 p.m.
Last Update March 15, 2016, 2:33 p.m.
Affected System
Ruby on Rails project
Rails 3.2.22.1 未満
Rails 4.0.x
Rails 4.1.14.1 未満の 4.1.x
Rails 4.2.5.1 未満の 4.2.x
Rails 5.0.0.beta1.1 未満の 5.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
0 [2016年03月15日]
  掲載		 Feb. 17, 2018, 10:37 a.m.