Zero-day vulnerability in ImageMagick

Input validation error
CVE-2016-3714

Code execution vulnerability in ImageMagick was found by Nikolay Ermishkin from Mail.Ru Security Team while researching original report.
Security researcher Behrouz Sadeghipour discovered that the vulnerability was present in the web domain belonging to Polyvore.

The vulnerabilily is dubbed "ImageTragick".

Vulnerability details

Advisory: SB2016042801 - Remote code execution in ImageMagick

Vulnerable component: ImageMagick

CVE-ID: CVE-2016-3714

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-20 - Improper input validation

Description:

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to insufficient filtering for filename passed to delegate's command. A remote attacker can create a specially crafted image containing shell metacharacters, trick the victim into opening it via application using ImageMagick, will trigger an input validation flaw and execute arbitrary shell commands with privileges of the current user.

Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.

Note: the vulnerability was being actively exploited.

Public Exploits:

- ImageMagick 6.9.3-9 / 7.0.1-0 - Delegate Arbitrary Command Execution (ImageTragick) (Metasploit) [Exploit-DB]

- ImageMagick 6.9.3-9 / 7.0.1-0 - Multiple Vulnerabilities (ImageTragick) [Exploit-DB]

External links:

https://imagetragick.com/
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.440568
http://blog.trendmicro.com/trendlabs-security-intelligence/imagemagick-vulnerability-allows-remote-c...
http://www.darknet.org.uk/2016/05/multiple-serious-imagemagick-zero-day-vulnerabilities/
http://www.zdnet.com/article/yahoos-polyvore-vulnerable-to-imagemagick-flaw-researcher-receives-litt...
http://www.securityweek.com/yahoo-rewards-researcher-imagemagick-hack
http://sec.sangfor.com.cn:88/vulns/290.html
https://www.helpnetsecurity.com/2016/05/04/imagemagick-zero-day-flaw/
http://www.sangfor.com/source/blog-network-security/696.html
https://arstechnica.com/security/2016/05/exploits-gone-wild-hackers-target-critical-image-processing...
http://www.nickhammond.com/fixing-imagemagick-cve-20163714-with-ansible/
http://www.securityweek.com/attackers-exploit-critical-imagemagick-vulnerability

About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.