Snappy is a PHP library allowing thumbnail, snapshot or PDF generation from a url or a html page. Prior to version 1.4.2, Snappy is vulnerable to PHAR deserialization due to a lack of checking on the protocol before passing it into the `file_exists()` function. If an attacker can upload files of any type to the server he can pass in the phar:// protocol to unserialize the uploaded file and instantiate arbitrary PHP objects. This can lead to remote code execution especially when snappy is used with frameworks with documented POP chains like Laravel/Symfony vulnerable developer code. If a user can control the output file from the `generateFromHtml()` function, it will invoke deserialization. This vulnerability is capable of remote code execution if Snappy is used with frameworks or developer code with vulnerable POP chains. It has been fixed in version 1.4.2.

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

  - Snappy is a PHP library allowing thumbnail, snapshot or PDF generation from a url or a html page. Prior to     version 1.4.2, Snappy is vulnerable to PHAR deserialization due to a lack of checking on the protocol     before passing it into the `file_exists()` function. If an attacker can upload files of any type to the     server he can pass in the phar:// protocol to unserialize the uploaded file and instantiate arbitrary PHP     objects. This can lead to remote code execution especially when snappy is used with frameworks with     documented POP chains like Laravel/Symfony vulnerable developer code. If a user can control the output     file from the `generateFromHtml()` function, it will invoke deserialization. This vulnerability is capable     of remote code execution if Snappy is used with frameworks or developer code with vulnerable POP chains.
    It has been fixed in version 1.4.2. (CVE-2023-28115)

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:

  - Snappy is a PHP library allowing thumbnail, snapshot or PDF generation from a url or a html page. Prior to
    version 1.4.2, Snappy is vulnerable to PHAR deserialization due to a lack of checking on the protocol
    before passing it into the `file_exists()` function. If an attacker can upload files of any type to the
    server he can pass in the phar:// protocol to unserialize the uploaded file and instantiate arbitrary PHP
    objects. This can lead to remote code execution especially when snappy is used with frameworks with
    documented POP chains like Laravel/Symfony vulnerable developer code. If a user can control the output
    file from the `generateFromHtml()` function, it will invoke deserialization. This vulnerability is capable
    of remote code execution if Snappy is used with frameworks or developer code with vulnerable POP chains.
    It has been fixed in version 1.4.2. (CVE-2023-28115)

ID	Name	Product	Family	Type	Severity
226733	Linux Distros Unpatched Vulnerability : CVE-2023-28115	Nessus	Misc.	Local	critical
415252	SCA: security update for knplabs/knp-snappy (GHSA-gq6w-q6wh-jggc)	Tenable Cloud Security	SCA Checks	Local	critical
415252	SCA: security update for knplabs/knp-snappy (GHSA-gq6w-q6wh-jggc)	Tenable Self-Hosted Container Security	SCA Checks	Local	critical

Detections

Analytics

CVE-2023-28115

critical

Tenable Plugins

critical

critical

critical