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Debian LTS Advisory ([SECURITY] [DLA 1608-1] php5 security update)

Information

Severity

Severity

High

Family

Family

Debian Local Security Checks

CVSSv2 Base

CVSSv2 Base

8.5

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:M/Au:S/C:C/I:C/A:C

Solution Type

Solution Type

Vendor Patch

Created

Created

3 years ago

Modified

Modified

3 years ago

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.

Common Vulnerabilities and Exposures (CVE)