GHSA-4qpj-gxxg-jqg4 Swiftmailer Sendmail transport arbitrary shell execution

Not scored Published

Attackers can execute arbitrary shell commands via the From header in Swiftmailer's sendmail transport when Return-Path is unconfigured.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is GHSA-4qpj-gxxg-jqg4?

GHSA-4qpj-gxxg-jqg4 is a command injection vulnerability in swiftmailer/swiftmailer, published on 29 May 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Prior to 5.2.1, the sendmail transport (Swift_Transport_SendmailTransport) was vulnerable to an arbitrary shell execution if the "From" header came from a non-trusted source and no "Return-Path" is configured. This has been fixed in 5.2.1. If you are using sendmail as a transport, you are encouraged to upgrade as soon as possible.

Which versions are affected by GHSA-4qpj-gxxg-jqg4?

2 open source packages ship an affected version, including swiftmailer/swiftmailer.

PackageAffectedFixed in
swiftmailer/swiftmailer PackagistFrom 4.0.05.2.1
swiftmailer/swiftmailer PackagistFrom 4.0.05.2.1

How do I fix GHSA-4qpj-gxxg-jqg4?

Upgrade swiftmailer/swiftmailer to 5.2.1 or later.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is GHSA-4qpj-gxxg-jqg4 being exploited?

There is no known exploitation of GHSA-4qpj-gxxg-jqg4 in the wild and no public exploit code.

Sources

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