Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. Loofah >= 2.2.0, < 2.19.1 uses recursion for sanitizing CDATA sections, making it susceptible to stack exhaustion and raising a SystemStackError exception. This may lead to a denial of service through CPU resource consumption. This issue is patched in version 2.19.1. Users who are unable to upgrade may be able to mitigate this vulnerability by limiting the length of the strings that are sanitized.

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

  - Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on     top of Nokogiri. Loofah >= 2.2.0, < 2.19.1 uses recursion for sanitizing CDATA sections, making it     susceptible to stack exhaustion and raising a SystemStackError exception. This may lead to a denial of     service through CPU resource consumption. This issue is patched in version 2.19.1. Users who are unable to     upgrade may be able to mitigate this vulnerability by limiting the length of the strings that are     sanitized. (CVE-2022-23516)

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

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

  - Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on
    top of Nokogiri. Loofah >= 2.2.0, < 2.19.1 uses recursion for sanitizing CDATA sections, making it
    susceptible to stack exhaustion and raising a SystemStackError exception. This may lead to a denial of
    service through CPU resource consumption. This issue is patched in version 2.19.1. Users who are unable to
    upgrade may be able to mitigate this vulnerability by limiting the length of the strings that are
    sanitized. (CVE-2022-23516)

The remote Debian 11 host has a package installed that is affected by multiple vulnerabilities as referenced in the dla-3901 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-3901-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                          Adrian Bunk     September 28, 2024                            https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : ruby-loofah     Version        : 2.7.0+dfsg-1+deb11u1     CVE ID         : CVE-2022-23514 CVE-2022-23515 CVE-2022-23516     Debian Bug     : 1026083

    Multiple vulnerabilities have been fixed in ruby-loofah, a Ruby library     for manipulating and transforming HTML/XML documents and fragments.

    CVE-2022-23514

        slow regex attribute check with crass parser

    CVE-2022-23515

        XSS with image/svg+xml in data URIs

    CVE-2022-23516

        Uncontrolled CDATA recursion

    For Debian 11 bullseye, these problems have been fixed in version     2.7.0+dfsg-1+deb11u1.

    We recommend that you upgrade your ruby-loofah packages.

    For the detailed security status of ruby-loofah please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/ruby-loofah

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian 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 Fedora 40 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-1bbea3700b advisory.

    Automatic update for rubygem-loofah-2.22.0-1.fc40.

    ##### **Changelog**

    ```
    * Thu Nov 23 2023 Vt Ondruch <vondruch@redhat.com> - 2.22.0-1
    - Update to Loofah 2.22.0.
      Resolves: rhbz#2126896       Resolves: rhbz#2153235       Resolves: rhbz#2153242       Resolves: rhbz#2153263

    ```

Tenable has extracted the preceding description block directly from the Fedora 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 Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:2097 advisory.

    Red Hat Satellite is a systems management tool for Linux-based     infrastructure. It allows for provisioning, remote management, and     monitoring of multiple Linux deployments with a single centralized tool.

    Security Fix(es):
    * CVE-2022-1471 CVE-2022-25857 CVE-2022-38749 CVE-2022-38750 CVE-2022-38751 CVE-2022-38752 candlepin and     puppetserver: various flaws
    * CVE-2022-22577 tfm-rubygem-actionpack: rubygem-actionpack: Possible cross-site scripting vulnerability     in Action Pack
    * CVE-2022-23514 rubygem-loofah: inefficient regular expression leading to denial of service
    * CVE-2022-23515 rubygem-loofah: rubygem-loofah: Improper neutralization of data URIs leading to Cross     Site Scripting
    * CVE-2022-23516 rubygem-loofah: Uncontrolled Recursion leading to denial of service
    * CVE-2022-23517 tfm-rubygem-rails-html-sanitizer: rubygem-rails-html-sanitizer: Inefficient Regular     Expression leading to denial of service
    * CVE-2022-23518 tfm-rubygem-rails-html-sanitizer: rubygem-rails-html-sanitizer: Improper neutralization     of data URIs leading to Cross site scripting
    * CVE-2022-23519 tfm-rubygem-rails-html-sanitizer: rubygem-rails-html-sanitizer: Cross site scripting     vulnerability with certain configurations
    * CVE-2022-23520 tfm-rubygem-rails-html-sanitizer: rubygem-rails-html-sanitizer: Cross site scripting     vulnerability with certain configurations
    * CVE-2022-27777 tfm-rubygem-actionview: Possible cross-site scripting vulnerability in Action View tag     helpers
    * CVE-2022-31163 rubygem-tzinfo: rubygem-tzinfo: arbitrary code execution
    * CVE-2022-32224 tfm-rubygem-activerecord: activerecord: Possible RCE escalation bug with Serialized     Columns in Active Record
    * CVE-2022-33980 candlepin: apache-commons-configuration2: Apache Commons Configuration insecure     interpolation defaults
    * CVE-2022-41323 satellite-capsule:el8/python-django: Potential denial-of-service vulnerability in     internationalized URLs
    * CVE-2022-41946 candlepin: postgresql-jdbc: Information leak of prepared statement data due to insecure     temporary file permissions
    * CVE-2022-42003 CVE-2022-42004 candlepin: various flaws
    * CVE-2022-42889 candlepin: apache-commons-text: variable interpolation RCE
    * CVE-2022-23514 rubygem-loofah: inefficient regular expression leading to denial of service
    * CVE-2023-23969 python-django: Potential denial-of-service via Accept-Language headers
    * CVE-2023-24580 python-django: Potential denial-of-service vulnerability in file uploads

    For more details about the security issue(s), including the impact, a CVSS     score, acknowledgments, and other related information, refer to the CVE     page(s) listed in the References section.

    Additional Changes:

    The items above are not a complete list of changes. This update also fixes     several bugs and adds various enhancements. Documentation for these changes     is available from the Release Notes document.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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-3565 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-3565-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                      Sylvain Beucler     September 13, 2023                            https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : ruby-loofah     Version        : 2.2.3-1+deb10u2     CVE ID         : CVE-2022-23514 CVE-2022-23515 CVE-2022-23516     Debian Bug     : 1026083

    Multiple vulnerabilities were discovered in Loofah, a Ruby library for     HTML/XML transformation and sanitization. An attacker could launch     cross-site scripting (XSS) and denial-of-service (DoS) attacks through     crafted HTML/XML documents.

    CVE-2022-23514

        Inefficient regular expression that is susceptible to excessive         backtracking when attempting to sanitize certain SVG         attributes. This may lead to a denial of service through CPU         resource consumption.

    CVE-2022-23515

        Cross-site scripting via the image/svg+xml media type in data         URIs.

    CVE-2022-23516

        Loofah uses recursion for sanitizing CDATA sections, making it         susceptible to stack exhaustion and raising a SystemStackError         exception. This may lead to a denial of service through CPU         resource consumption.

    For Debian 10 buster, these problems have been fixed in version     2.2.3-1+deb10u2.

    We recommend that you upgrade your ruby-loofah packages.

    For the detailed security status of ruby-loofah please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/ruby-loofah

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian 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 Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2023:2097 advisory.

  - SnakeYaml's Constructor() class does not restrict types which can be instantiated during deserialization.
    Deserializing yaml content provided by an attacker can lead to remote code execution. We recommend using     SnakeYaml's SafeConsturctor when parsing untrusted content to restrict deserialization. We recommend     upgrading to version 2.0 and beyond. (CVE-2022-1471)

  - An XSS Vulnerability in Action Pack >= 5.2.0 and < 5.2.0 that could allow an attacker to bypass CSP for     non HTML like responses. (CVE-2022-22577)

  - Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on     top of Nokogiri. Loofah < 2.19.1 contains an inefficient regular expression that is susceptible to     excessive backtracking when attempting to sanitize certain SVG attributes. This may lead to a denial of     service through CPU resource consumption. This issue is patched in version 2.19.1. (CVE-2022-23514)

  - Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on     top of Nokogiri. Loofah >= 2.1.0, < 2.19.1 is vulnerable to cross-site scripting via the image/svg+xml     media type in data URIs. This issue is patched in version 2.19.1. (CVE-2022-23515)

  - Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on     top of Nokogiri. Loofah >= 2.2.0, < 2.19.1 uses recursion for sanitizing CDATA sections, making it     susceptible to stack exhaustion and raising a SystemStackError exception. This may lead to a denial of     service through CPU resource consumption. This issue is patched in version 2.19.1. Users who are unable to     upgrade may be able to mitigate this vulnerability by limiting the length of the strings that are     sanitized. (CVE-2022-23516)

  - rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Certain     configurations of rails-html-sanitizer < 1.4.4 use an inefficient regular expression that is susceptible     to excessive backtracking when attempting to sanitize certain SVG attributes. This may lead to a denial of     service through CPU resource consumption. This issue has been patched in version 1.4.4. (CVE-2022-23517)

  - rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Versions >=     1.0.3, < 1.4.4 are vulnerable to cross-site scripting via data URIs when used in combination with Loofah     >= 2.1.0. This issue is patched in version 1.4.4. (CVE-2022-23518)

  - rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Prior to version     1.4.4, a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer may allow an     attacker to inject content if the application developer has overridden the sanitizer's allowed tags in     either of the following ways: allow both math and style elements, or allow both svg and style     elements. Code is only impacted if allowed tags are being overridden. . This issue is fixed in version     1.4.4. All users overriding the allowed tags to include math or svg and style should either upgrade     or use the following workaround immediately: Remove style from the overridden allowed tags, or remove     math and svg from the overridden allowed tags. (CVE-2022-23519)

  - rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Prior to version     1.4.4, there is a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer due to     an incomplete fix of CVE-2022-32209. Rails::Html::Sanitizer may allow an attacker to inject content if the     application developer has overridden the sanitizer's allowed tags to allow both select and style     elements. Code is only impacted if allowed tags are being overridden. This issue is patched in version     1.4.4. All users overriding the allowed tags to include both select and style should either upgrade or     use this workaround: Remove either select or style from the overridden allowed tags. NOTE: Code is
    _not_ impacted if allowed tags are overridden using either the :tags option to the Action View helper     method sanitize or the :tags option to the instance method SafeListSanitizer#sanitize. (CVE-2022-23520)

  - The package org.yaml:snakeyaml from 0 and before 1.31 are vulnerable to Denial of Service (DoS) due     missing to nested depth limitation for collections. (CVE-2022-25857)

  - A XSS Vulnerability in Action View tag helpers >= 5.2.0 and < 5.2.0 which would allow an attacker to     inject content if able to control input into specific attributes. (CVE-2022-27777)

  - TZInfo is a Ruby library that provides access to time zone data and allows times to be converted using     time zone rules. Versions prior to 0.36.1, as well as those prior to 1.2.10 when used with the Ruby data     source tzinfo-data, are vulnerable to relative path traversal. With the Ruby data source, time zones are     defined in Ruby files. There is one file per time zone. Time zone files are loaded with `require` on     demand. In the affected versions, `TZInfo::Timezone.get` fails to validate time zone identifiers     correctly, allowing a new line character within the identifier. With Ruby version 1.9.3 and later,     `TZInfo::Timezone.get` can be made to load unintended files with `require`, executing them within the Ruby     process. Versions 0.3.61 and 1.2.10 include fixes to correctly validate time zone identifiers. Versions     2.0.0 and later are not vulnerable. Version 0.3.61 can still load arbitrary files from the Ruby load path     if their name follows the rules for a valid time zone identifier and the file has a prefix of     `tzinfo/definition` within a directory in the load path. Applications should ensure that untrusted files     are not placed in a directory on the load path. As a workaround, the time zone identifier can be validated     before passing to `TZInfo::Timezone.get` by ensuring it matches the regular expression     `\A[A-Za-z0-9+\-_]+(?:\/[A-Za-z0-9+\-_]+)*\z`. (CVE-2022-31163)

  - A possible escalation to RCE vulnerability exists when using YAML serialized columns in Active Record <     7.0.3.1, <6.1.6.1, <6.0.5.1 and <5.2.8.1 which could allow an attacker, that can manipulate data in the     database (via means like SQL injection), the ability to escalate to an RCE. (CVE-2022-32224)

  - Apache Commons Configuration performs variable interpolation, allowing properties to be dynamically     evaluated and expanded. The standard format for interpolation is ${prefix:name}, where prefix is used     to locate an instance of org.apache.commons.configuration2.interpol.Lookup that performs the     interpolation. Starting with version 2.4 and continuing through 2.7, the set of default Lookup instances     included interpolators that could result in arbitrary code execution or contact with remote servers. These     lookups are: - script - execute expressions using the JVM script execution engine (javax.script) - dns
    - resolve dns records - url - load values from urls, including from remote servers Applications using     the interpolation defaults in the affected versions may be vulnerable to remote code execution or     unintentional contact with remote servers if untrusted configuration values are used. Users are     recommended to upgrade to Apache Commons Configuration 2.8.0, which disables the problematic interpolators     by default. (CVE-2022-33980)

  - Using snakeYAML to parse untrusted YAML files may be vulnerable to Denial of Service attacks (DOS). If the     parser is running on user supplied input, an attacker may supply content that causes the parser to crash     by stackoverflow. (CVE-2022-38749, CVE-2022-38750, CVE-2022-38751)

  - Using snakeYAML to parse untrusted YAML files may be vulnerable to Denial of Service attacks (DOS). If the     parser is running on user supplied input, an attacker may supply content that causes the parser to crash     by stack-overflow. (CVE-2022-38752)

  - In Django 3.2 before 3.2.16, 4.0 before 4.0.8, and 4.1 before 4.1.2, internationalized URLs were subject     to a potential denial of service attack via the locale parameter, which is treated as a regular     expression. (CVE-2022-41323)

  - pgjdbc is an open source postgresql JDBC Driver. In affected versions a prepared statement using either     `PreparedStatement.setText(int, InputStream)` or `PreparedStatemet.setBytea(int, InputStream)` will create     a temporary file if the InputStream is larger than 2k. This will create a temporary file which is readable     by other users on Unix like systems, but not MacOS. On Unix like systems, the system's temporary directory     is shared between all users on that system. Because of this, when files and directories are written into     this directory they are, by default, readable by other users on that same system. This vulnerability does     not allow other users to overwrite the contents of these directories or files. This is purely an     information disclosure vulnerability. Because certain JDK file system APIs were only added in JDK 1.7,     this this fix is dependent upon the version of the JDK you are using. Java 1.7 and higher users: this     vulnerability is fixed in 4.5.0. Java 1.6 and lower users: no patch is available. If you are unable to     patch, or are stuck running on Java 1.6, specifying the java.io.tmpdir system environment variable to a     directory that is exclusively owned by the executing user will mitigate this vulnerability.
    (CVE-2022-41946)

  - In FasterXML jackson-databind before 2.14.0-rc1, resource exhaustion can occur because of a lack of a     check in primitive value deserializers to avoid deep wrapper array nesting, when the     UNWRAP_SINGLE_VALUE_ARRAYS feature is enabled. Additional fix version in 2.13.4.1 and 2.12.17.1     (CVE-2022-42003)

  - In FasterXML jackson-databind before 2.13.4, resource exhaustion can occur because of a lack of a check in     BeanDeserializer._deserializeFromArray to prevent use of deeply nested arrays. An application is     vulnerable only with certain customized choices for deserialization. (CVE-2022-42004)

  - Apache Commons Text performs variable interpolation, allowing properties to be dynamically evaluated and     expanded. The standard format for interpolation is ${prefix:name}, where prefix is used to locate an     instance of org.apache.commons.text.lookup.StringLookup that performs the interpolation. Starting with     version 1.5 and continuing through 1.9, the set of default Lookup instances included interpolators that     could result in arbitrary code execution or contact with remote servers. These lookups are: - script -     execute expressions using the JVM script execution engine (javax.script) - dns - resolve dns records -     url - load values from urls, including from remote servers Applications using the interpolation defaults     in the affected versions may be vulnerable to remote code execution or unintentional contact with remote     servers if untrusted configuration values are used. Users are recommended to upgrade to Apache Commons     Text 1.10.0, which disables the problematic interpolators by default. (CVE-2022-42889)

  - In Django 3.2 before 3.2.17, 4.0 before 4.0.9, and 4.1 before 4.1.6, the parsed values of Accept-Language     headers are cached in order to avoid repetitive parsing. This leads to a potential denial-of-service     vector via excessive memory usage if the raw value of Accept-Language headers is very large.
    (CVE-2023-23969)

  - An issue was discovered in the Multipart Request Parser in Django 3.2 before 3.2.18, 4.0 before 4.0.10,     and 4.1 before 4.1.7. Passing certain inputs (e.g., an excessive number of parts) to multipart forms could     result in too many open files or memory exhaustion, and provided a potential vector for a denial-of-     service attack. (CVE-2023-24580)

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

The remote SUSE Linux SLES15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:1657-1 advisory.

  - Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on     top of Nokogiri. Loofah < 2.19.1 contains an inefficient regular expression that is susceptible to     excessive backtracking when attempting to sanitize certain SVG attributes. This may lead to a denial of     service through CPU resource consumption. This issue is patched in version 2.19.1. (CVE-2022-23514)

  - Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on     top of Nokogiri. Loofah >= 2.1.0, < 2.19.1 is vulnerable to cross-site scripting via the image/svg+xml     media type in data URIs. This issue is patched in version 2.19.1. (CVE-2022-23515)

  - Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on     top of Nokogiri. Loofah >= 2.2.0, < 2.19.1 uses recursion for sanitizing CDATA sections, making it     susceptible to stack exhaustion and raising a SystemStackError exception. This may lead to a denial of     service through CPU resource consumption. This issue is patched in version 2.19.1. Users who are unable to     upgrade may be able to mitigate this vulnerability by limiting the length of the strings that are     sanitized. (CVE-2022-23516)

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
252445	Linux Distros Unpatched Vulnerability : CVE-2022-23516	Nessus	Misc.	high
409762	SCA: security update for loofah (GHSA-3x8r-x6xp-q4vm)	Tenable Cloud Security	SCA Checks	high
409762	SCA: security update for loofah (GHSA-3x8r-x6xp-q4vm)	Tenable Self-Hosted Container Security	SCA Checks	high
207898	Debian dla-3901 : ruby-loofah - security update	Nessus	Debian Local Security Checks	medium
194607	Fedora 40 : rubygem-loofah (2023-1bbea3700b)	Nessus	Fedora Local Security Checks	medium
194316	RHEL 8 : Satellite 6.13 Release (Important) (RHSA-2023:2097)	Nessus	Red Hat Local Security Checks	critical
181445	Debian dla-3565 : ruby-loofah - security update	Nessus	Debian Local Security Checks	medium
175139	Rocky Linux 8 : Satellite 6.13 Release (Important) (RLSA-2023:2097)	Nessus	Rocky Linux Local Security Checks	critical
173688	SUSE SLES15 / openSUSE 15 Security Update : rubygem-loofah (SUSE-SU-2023:1657-1)	Nessus	SuSE Local Security Checks	medium

Detections

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CVE-2022-23516

high

Tenable Plugins

high

high

high

medium

medium

critical

medium

critical

medium