Latest News

### Summary The [XmlScanner class](https://github.com/PHPOffice/PhpSpreadsheet/blob/39fc51309181e82593b06e2fa8e45ef8333a0335/src/PhpSpreadsheet/Reader/Security/XmlScanner.php) has a [scan](https://github.com/PHPOffice/PhpSpreadsheet/blob/39fc51309181e82593b06e2fa8e45ef8333a0335/src/PhpSpreadsheet/Reader/Security/XmlScanner.php#L72) method which should prevent XXE attacks. However, we found another bypass than the previously reported `CVE-2024-47873`, the regexes from the [findCharSet](https://github.com/PHPOffice/PhpSpreadsheet/blob/39fc51309181e82593b06e2fa8e45ef8333a0335/src/PhpSpreadsheet/Reader/Security/XmlScanner.php#L51) method, which is used for determining the current encoding can be bypassed by using a payload in the encoding UTF-7, and adding at end of the file a comment with the value `encoding="UTF-8"` with `"`, which is matched by the first regex, so that `encoding='UTF-7'` with single quotes `'` in the XML header is not matched by the second regex: ``` $patterns = [ ...

### Summary The [XmlScanner class](https://github.com/PHPOffice/PhpSpreadsheet/blob/39fc51309181e82593b06e2fa8e45ef8333a0335/src/PhpSpreadsheet/Reader/Security/XmlScanner.php) has a [scan](https://github.com/PHPOffice/PhpSpreadsheet/blob/39fc51309181e82593b06e2fa8e45ef8333a0335/src/PhpSpreadsheet/Reader/Security/XmlScanner.php#L72) method which should prevent XXE attacks. However, the regexes used in the `scan` method and the [findCharSet](https://github.com/PHPOffice/PhpSpreadsheet/blob/39fc51309181e82593b06e2fa8e45ef8333a0335/src/PhpSpreadsheet/Reader/Security/XmlScanner.php#L51) method can be bypassed by using UCS-4 and encoding guessing as described in <https://www.w3.org/TR/xml/#sec-guessing-no-ext-info>. ### Details The `scan` method converts the input in the UTF-8 encoding if it is not already in the UTF-8 encoding with the [`toUtf8` method](https://github.com/PHPOffice/PhpSpreadsheet/blob/39fc51309181e82593b06e2fa8e45ef8333a0335/src/PhpSpreadsheet/Reader/Security/XmlScanner....

### Summary utils.get_shared_secret() always returns -1 - allows anyone to connect to cobbler XML-RPC as user '' password -1 and make any changes. ### Details utils.py get_shared_secret: ``` def get_shared_secret() -> Union[str, int]: """ The 'web.ss' file is regenerated each time cobblerd restarts and is used to agree on shared secret interchange between the web server and cobblerd, and also the CLI and cobblerd, when username/password access is not required. For the CLI, this enables root users to avoid entering username/pass if on the Cobbler server. :return: The Cobbler secret which enables full access to Cobbler. """ try: with open("/var/lib/cobbler/web.ss", 'rb', encoding='utf-8') as fd: data = fd.read() except: return -1 return str(data).strip() ``` Always returns `-1` because of the following exception: ``` binary mode doesn't take an encoding argument ``` This appears to have been introduced by commit 32c5cad...

A Facebook malvertising campaign disguised as Bitwarden updates spreads malware, targeting business accounts. Users are tricked into installing…

Of the numerous victims, at least three refused to pay the demanded ransom, with the rest seemingly in talks with the cybercriminal group.

Cable is a simple post-exploitation tool used for enumeration and further exploitation of Active Directory environments. This tool was primarily created to learn more about .NET offensive development in an Active Directory context.

Feeling creative? Submit your caption and our panel of experts will reward the winner with a $25 gift card.

The tangle of user-built tools is formidable to manage, but it can lead to a greater understanding of real-world business needs.

DocuSign phishing scams surged by 98%, with hundreds of daily attacks impersonating US government agencies like HHS and…

The security vendor's Expedition firewall appliance's PAN-OS interface tool has racked up four critical security vulnerabilities under active attack in November, leading tit to advise customers to update immediately or and take them off the Internet.