CVE-2021-21678

描述

An extension point in Jenkins allows selectively disabling cross-site request forgery (CSRF) protection for specific URLs. SAML Plugin implements this extension point for the URL that users are redirected to after login. In Jenkins SAML Plugin 2.0.7 and earlier this implementation is too permissive, allowing attackers to craft URLs that would bypass the CSRF protection of any target URL.\n\nThis vulnerability was originally introduced in Jenkins SAML Plugin 1.1.3. Jenkins SAML Plugin 2.0.8 restricts which URLs it disables cross-site request forgery (CSRF) protection for to the one URL that needs it.

如何修補 CVE-2021-21678

要修補 CVE-2021-21678,請將受影響套件升級到下列已修補版本。

• —升級至 2.0.8 或更新版本

CVE-2021-21678 正在被利用嗎?

低 — EPSS 為 0.8%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• from 0, < 2.0.8

CVSS 分數

參考連結(5)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-21678
• PATCHgithub.com/jenkinsci/saml-plugin
• WEBwww.openwall.com/lists/oss-security/2021/08/31/1
• WEBgithub.com/jenkinsci/saml-plugin/commit/e063317ee7e1c64a096e0ac323c7155b786c8b9d