CVE-2018-19046
説明
CVE.org より
keepalived 2.0.8 didn't check for existing plain files when writing data to a temporary file upon a call to PrintData or PrintStats. If a local attacker had previously created a file with the expected name (e.g., /tmp/keepalived.data or /tmp/keepalived.stats), with read access for the attacker and write access for the keepalived process, then this potentially leaked sensitive information.
詳細
This issue did not affect the versions of keepalived as shipped with Red Hat Enterprise Linux 6 and 7 as the packages are not built with dbus support, therefore the vulnerable code is not available in resulting RPM and the issue cannot be exploited.
CVSS (Common Vulnerability Scoring System) のスコアの詳細
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
以下の CSVV メトリクスおよびスコアは予備的で、再検討の対象となります。
CVSS v3 スコアの内訳
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| ベーススコア | 7.1 | 4.7 | N/A |
| 攻撃ベクトル | Local | Local | N/A |
| 攻撃の複雑さ | Low | High | N/A |
| 必要な権限 | Low | Low | N/A |
| ユーザー関与レベル | None | None | N/A |
| 範囲 | Unchanged | Unchanged | N/A |
| 機密性 | High | High | N/A |
| 完全性への影響 | High | None | N/A |
| 可用性への影響 | None | None | N/A |
ベクトル
Red Hat: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
NVD: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
脆弱性の原因 (CWE) の理解
Confidentiality,Integrity
Technical Impact: Read Files or Directories; Modify Files or Directories
よくある質問
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