CVE Catalog

CVE-2017-7692

High
Published: Translated: NVD NIST

Summary

SquirrelMail version 1.4.22 (and other versions before 20170427_0200-SVN) allows post-authentication remote code execution via a mishandled sendmail.cf file in a popen call. Exploiting this vulnerability enables the execution of arbitrary shell commands on the remote server.

Risk Assessment

This vulnerability poses a serious risk to organizations as it allows an attacker to execute commands remotely on the server, potentially leading to system compromise.

Recommendation

It is recommended to update SquirrelMail to the latest version and review the sendmail configuration to minimize the risk associated with this vulnerability.

Related vulnerabilities

Original NVD description (English source)

SquirrelMail 1.4.22 (and other versions before 20170427_0200-SVN) allows post-authentication remote code execution via a sendmail.cf file that is mishandled in a popen call. It's possible to exploit this vulnerability to execute arbitrary shell commands on the remote server. The problem is in the Deliver_SendMail.class.php with the initStream function that uses escapeshellcmd() to sanitize the sendmail command before executing it. The use of escapeshellcmd() is not correct in this case since it doesn't escape whitespaces, allowing the injection of arbitrary command parameters. The problem is in -f$envelopefrom within the sendmail command line. Hence, if the target server uses sendmail and SquirrelMail is configured to use it as a command-line program, it's possible to trick sendmail into using an attacker-provided configuration file that triggers the execution of an arbitrary command. For exploitation, the attacker must upload a sendmail.cf file as an email attachment, and inject the s

Vulnerability data from NVD (NIST) · CISA KEV · EPSS