There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper
    verification of cryptographic signature vulnerability. All users of pysaml2 that need to validate signed
    SAML documents are impacted. The vulnerability is a variant of XML Signature wrapping because it did not
    validate the SAML document against an XML schema. This allowed invalid XML documents to be processed and
    such a document can trick pysaml2 with a wrapped signature. This is fixed in PySAML2 6.5.0.
    (CVE-2021-21238)

  - PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper
    verification of cryptographic signature vulnerability. Users of pysaml2 that use the default
    CryptoBackendXmlSec1 backend and need to verify signed SAML documents are impacted. PySAML2 does not
    ensure that a signed SAML document is correctly signed. The default CryptoBackendXmlSec1 backend is using
    the xmlsec1 binary to verify the signature of signed SAML documents, but by default xmlsec1 accepts any
    type of key found within the given document. xmlsec1 needs to be configured explicitly to only use only
    _x509 certificates_ for the verification process of the SAML document signature. This is fixed in PySAML2
    6.5.0. (CVE-2021-21239)

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper
    verification of cryptographic signature vulnerability. All users of pysaml2 that need to validate signed
    SAML documents are impacted. The vulnerability is a variant of XML Signature wrapping because it did not
    validate the SAML document against an XML schema. This allowed invalid XML documents to be processed and
    such a document can trick pysaml2 with a wrapped signature. This is fixed in PySAML2 6.5.0.
    (CVE-2021-21238)

Linux/Unix 主机中安装的一个或多个程序包受到一个漏洞影响，而供应商没有提供补丁程序。

  - PySAML2 是 SAML 第 2 版标准的纯 python 实现。6.5.0 之前的 PySAML2 版本存在未正确验证加密签名漏洞。所有需要验证已签名 SAML 文档的 pysaml2 用户都会受到影响。该漏洞是 XML 签名封装的一个变体因为它没有根据 XML 方案验证 SAML 文档。从而允许处理无效的 XML 文档且此类文档可能会通过封装的签名来欺骗 pysaml2。PySAML2 中已修复此问题 6.5.0。
    (CVE-2021-21238)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

Linux/Unix 主機上安裝了一個或多個受到弱點影響的套件，且廠商未提供可用的修補程式。

  - PySAML2 是 SAML 第 2 版標準的純 python 實作。6.5.0 版之前的 PySAML2 中有一個密碼編譯簽章驗證不當弱點。所有需要驗證已簽署 SAML 文件的 pysaml2 使用者都會受到影響。此弱點是 XML Signature wrapping 的變體因為它並未針對 XML 配置驗證 SAML 文件。這會允許處理無效的 XML 文件而這類文件可以使用包裝的簽章來誘騙 pysaml2。這已在 PySAML2 中修正 6.5.0。
    (CVE-2021-21238)

請注意，Nessus 依賴供應商報告的套件存在。

Linux/Unix ホストには、ベンダーが提供するパッチが利用できない脆弱性の影響を受ける複数のパッケージがインストールされています。

  - PySAML2は、SAMLバージョン2 Standardの純粋なpython実装であるです。6.5.0より前のPySAML2には、不適切な暗号署名検証の脆弱性があります。署名された SAML ドキュメントを検証する必要がある pysaml2 の全ユーザーが影響を受けます。SAML ドキュメントを XML スキーマに対して検証しなかったため、脆弱性は XML 署名ラッピングの変種です。これにより、無効な XML ドキュメントを処理でき、このようなドキュメントが pysaml2 をラップされた署名で騙す可能性があります。これは PySAML2 で修正されています 6.5.0。
    (CVE-2021-21238)

Nessus は、ベンダーによって報告されたパッケージの存在に依存していることに注意してください。

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper     verification of cryptographic signature vulnerability. All users of pysaml2 that need to validate signed     SAML documents are impacted. The vulnerability is a variant of XML Signature wrapping because it did not     validate the SAML document against an XML schema. This allowed invalid XML documents to be processed and     such a document can trick pysaml2 with a wrapped signature. This is fixed in PySAML2 6.5.0.
    (CVE-2021-21238)

Note that Nessus relies on the presence of the package as reported by the vendor.

pysaml2 Releases :

Fix processing of invalid SAML XML documents - CVE-2021-21238

Fix unspecified xmlsec1 key-type preference - CVE-2021-21239

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
406707	Alpine: multiple py3-saml2 packages: security update to 6.5.0-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	2023/10/31	2026/7/2	medium
400287	Alpine: multiple py3-saml2 packages: security update to 6.4.1-r0 (deprecated)	Tenable Cloud Security	Alpine Linux Local Security Checks	2023/8/16	2026/7/2	medium
414254	SCA: security update for pysaml2 (GHSA-f4g9-h89h-jgv9)	Tenable Cloud Security	SCA Checks	2025/1/23	2026/7/2	medium
406707	Alpine: multiple py3-saml2 packages: security update to 6.5.0-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	2023/10/31	2026/7/2	medium
400287	Alpine: multiple py3-saml2 packages: security update to 6.4.1-r0 (deprecated)	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	2023/8/16	2026/7/2	medium
414254	SCA: security update for pysaml2 (GHSA-f4g9-h89h-jgv9)	Tenable Self-Hosted Container Security	SCA Checks	2025/1/23	2026/7/2	medium
256726	Linux Distros 未修补的漏洞：CVE-2021-21238	Nessus	Misc.	2025/8/27	2026/8/3	medium
256726	Linux Distros 未修補的弱點：CVE-2021-21238	Nessus	Misc.	2025/8/27	2026/8/3	medium
256726	Linux Distros のパッチ未適用の脆弱性: CVE-2021-21238	Nessus	Misc.	2025/8/27	2026/8/3	medium
256726	Linux Distros Unpatched Vulnerability : CVE-2021-21238	Nessus	Misc.	2025/8/27	2026/8/3	medium
145469	FreeBSD : pysaml2 -- multiple vulnerabilities (fb67567a-5d95-11eb-a955-08002728f74c)	Nessus	FreeBSD Local Security Checks	2021/1/27	2024/1/26	medium

检测

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