CVE-2021-29480

描述

### Impact The client side session module uses the application startup time as the signing key by default. This means that if an attacker can determine this time, and if encryption is not also used (which is recommended, but is not on by default), the session data could be tampered with by someone with the ability to write cookies. The default configuration is unsuitable for production use as an application restart renders all sessions invalid and is not multi-host compatible, but its use is not actively prevented. ### Vulnerability Location https://github.com/ratpack/ratpack/blob/29434f7ac6fd4b36a4495429b70f4c8163100332/ratpack-session/src/main/java/ratpack/session/clientside/ClientSideSessionConfig.java#L29 ### Patches As of Ratpack 1.9.0 the default value is a securely randomly generated value, generated at application startup time. ### Workarounds Supply an alternative signing key, as per the documentation's recommendation.

如何修補 CVE-2021-29480

要修補 CVE-2021-29480,請將受影響套件升級到下列已修補版本。

• —升級至 1.9.0 或更新版本

CVE-2021-29480 正在被利用嗎?

低 — EPSS 為 0.3%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• from 0, < 1.9.0

CVSS 分數

參考連結(4)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-29480
• PATCHgithub.com/ratpack/ratpack
• WEBgithub.com/ratpack/ratpack/blob/29434f7ac6fd4b36a4495429b70f4c8163100332/ratpack-session/src/main/java/ratpack/session/clientside/ClientSideSessionConfig.java#L29
• WEBgithub.com/ratpack/ratpack/security/advisories/GHSA-2cc5-23r7-vc4v