CVE-2019-16782
Possible Information Leak / Session Hijack Vulnerability in Rack
描述
There's a possible information leak / session hijack vulnerability in Rack (RubyGem rack). This vulnerability is patched in versions 1.6.12 and 2.0.8. Attackers may be able to find and hijack sessions by using timing attacks targeting the session id. Session ids are usually stored and indexed in a database that uses some kind of scheme for speeding up lookups of that session id. By carefully measuring the amount of time it takes to look up a session, an attacker may be able to find a valid session id and hijack the session. The session id itself may be generated randomly, but the way the session is indexed by the backing store does not use a secure comparison.
如何修補 CVE-2019-16782
要修補 CVE-2019-16782,請將受影響套件升級到下列已修補版本。
- —升級至 2.1.1-2 或更新版本
- —升級至 1.6.12 或更新版本
CVE-2019-16782 正在被利用嗎?
低 — EPSS 為 3.7%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 2.1.1-2
- from 0, < 1.6.12
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.3 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N |