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Debian LTS Advisory ([SECURITY] [DLA 1608-1] php5 security update)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
Vulnerabilities have been discovered in php5, a server-side, HTML-embedded scripting language. Note that this update includes a change to the default behavior for IMAP connections. See below for details. CVE-2018-19518 An argument injection vulnerability in imap_open() may allow a remote attacker to execute arbitrary OS commands on the IMAP server. The fix for the CVE-2018-19518 vulnerability included this additional note from the upstream developers: Starting with 5.6.38, rsh/ssh logins are disabled by default. Use imap.enable_insecure_rsh if you want to enable them. Note that the IMAP library does not filter mailbox names before passing them to rsh/ssh command, thus passing untrusted data to this function with rsh/ssh enabled is insecure. CVE-2018-19935 A NULL pointer dereference leads to an application crash and a denial of service via an empty string in the message argument to the imap_mail function of ext/imap/php_imap.c.
Affected Software
Affected Software
php5 on Debian Linux
Detection Method
Detection Method
This check tests the installed software version using the apt package manager.
Solution
Solution
For Debian 8 'Jessie', these problems have been fixed in version 5.6.39+dfsg-0+deb8u1. We recommend that you upgrade your php5 packages.