Debian update for libgd2

1) Resource exhaustion

EUVDB-ID: #VU12901

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-9933

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in the gdImageFillToBorder function in gd.c due to stack consumption. A remote attacker can submit a specially crafted imagefilltoborder call that triggers use of a negative color value and cause the service to crash.

Mitigation

Update the affected package to version: 2.1.0-5+deb8u8, 2.2.2-29-g3c2b605-1, 2.2.2-29-g3c2b605-1

Vulnerable software versions

Debian Linux: All versions

External links

http://www.php.net/ChangeLog-5.php
http://www.php.net/ChangeLog-7.php

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.