XSS can occur in GNOME Web (aka Epiphany) before 40.4 and 41.x before 41.1 because a server's suggested_filename is used as the pdf_name value in PDF.js.

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

  - XSS can occur in GNOME Web (aka Epiphany) before 40.4 and 41.x before 41.1 because a server's     suggested_filename is used as the pdf_name value in PDF.js. (CVE-2021-45086)

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

The remote Ubuntu 20.04 LTS / 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5561-1 advisory.

    It was discovered that GNOME Web incorrectly filtered certain strings. A remote attacker could use this     issue to perform cross-site scripting (XSS) attacks. This issue only affected Ubuntu 20.04 LTS.
    (CVE-2021-45085, CVE-2021-45086, CVE-2021-45087)

    It was discovered that GNOME Web incorrectly handled certain long page titles. A remote attacker could use     this issue to cause GNOME Web to crash, resulting in a denial of service, or possibly execute arbitrary     code. (CVE-2022-29536)

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 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5042 advisory.

  - XSS can occur in GNOME Web (aka Epiphany) before 40.4 and 41.x before 41.1 via an about: page, as     demonstrated by ephy-about:overview when a user visits an XSS payload page often enough to place that page     on the Most Visited list. (CVE-2021-45085)

  - XSS can occur in GNOME Web (aka Epiphany) before 40.4 and 41.x before 41.1 because a server's     suggested_filename is used as the pdf_name value in PDF.js. (CVE-2021-45086)

  - XSS can occur in GNOME Web (aka Epiphany) before 40.4 and 41.x before 41.1 when View Source mode or Reader     mode is used, as demonstrated by a a page title. (CVE-2021-45087)

  - XSS can occur in GNOME Web (aka Epiphany) before 40.4 and 41.x before 41.1 via an error page.
    (CVE-2021-45088)

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

ID	Name	Product	Family	Severity
259460	Linux Distros Unpatched Vulnerability : CVE-2021-45086	Nessus	Misc.	medium
164146	Ubuntu 20.04 LTS / 22.04 LTS : GNOME Web vulnerabilities (USN-5561-1)	Nessus	Ubuntu Local Security Checks	medium
156695	Debian DSA-5042-1 : epiphany-browser - security update	Nessus	Debian Local Security Checks	medium

Detections

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CVE-2021-45086

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Tenable Plugins

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