xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) `DOMParser` and `XMLSerializer` module. xmldom parses XML that is not well-formed because it contains multiple top level elements, and adds all root nodes to the `childNodes` collection of the `Document`, without reporting any error or throwing. This breaks the assumption that there is only a single root node in the tree, which led to issuance of CVE-2022-39299 as it is a potential issue for dependents. Update to @xmldom/xmldom@~0.7.7, @xmldom/xmldom@~0.8.4 (dist-tag latest) or @xmldom/xmldom@>=0.9.0-beta.4 (dist-tag next). As a workaround, please one of the following approaches depending on your use case: instead of searching for elements in the whole DOM, only search in the `documentElement`or reject a document with a document that has more then 1 `childNode`.

The remote Ubuntu 20.04 LTS / 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6102-1 advisory.

    It was discovered that xmldom incorrectly handled certain inputs. If a user or an automated system were     tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to     cause

    unexpected syntactic changes during XML processing. This issue only affected Ubuntu 20.04 LTS.
    (CVE-2021-21366)

    It was discovered that xmldom incorrectly handled certain inputs. If a user or an automated system were     tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to     cause a denial of service. (CVE-2022-37616, CVE-2022-39353)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 10 host has a package installed that is affected by multiple vulnerabilities as referenced in the dla-3260 advisory.

  - xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module.
    xmldom versions 0.4.0 and older do not correctly preserve system identifiers, FPIs or namespaces when     repeatedly parsing and serializing maliciously crafted documents. This may lead to unexpected syntactic     changes during XML processing in some downstream applications. This is fixed in version 0.5.0. As a     workaround downstream applications can validate the input and reject the maliciously crafted documents.
    (CVE-2021-21366)

  - Passport-SAML is a SAML 2.0 authentication provider for Passport, the Node.js authentication library. A     remote attacker may be able to bypass SAML authentication on a website using passport-saml. A successful     attack requires that the attacker is in possession of an arbitrary IDP signed XML element. Depending on     the IDP used, fully unauthenticated attacks (e.g without access to a valid user) might also be feasible if     generation of a signed message can be triggered. Users should upgrade to passport-saml version 3.2.2 or     newer. The issue was also present in the beta releases of `node-saml` before version 4.0.0-beta.5. If you     cannot upgrade, disabling SAML authentication may be done as a workaround. (CVE-2022-39299)

  - xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) `DOMParser` and `XMLSerializer`     module. xmldom parses XML that is not well-formed because it contains multiple top level elements, and     adds all root nodes to the `childNodes` collection of the `Document`, without reporting any error or     throwing. This breaks the assumption that there is only a single root node in the tree, which led to     issuance of CVE-2022-39299 as it is a potential issue for dependents. Update to @xmldom/xmldom@~0.7.7,     @xmldom/xmldom@~0.8.4 (dist-tag latest) or @xmldom/xmldom@>=0.9.0-beta.4 (dist-tag next). As a workaround,     please one of the following approaches depending on your use case: instead of searching for elements in     the whole DOM, only search in the `documentElement`or reject a document with a document that has more then     1 `childNode`. (CVE-2022-39353)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
176324	Ubuntu 20.04 LTS / 22.04 LTS : xmldom vulnerabilities (USN-6102-1)	Nessus	Ubuntu Local Security Checks	critical
169694	Debian DLA-3260-1 : node-xmldom - LTS security update	Nessus	Debian Local Security Checks	critical

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CVE-2022-39353

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