Multiple vulnerabilities in ImageMagick

Published: 2019-08-13 | Updated: 2019-09-12

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2019-14980 CVE-2019-15139
CWE-ID	CWE-416 CWE-125
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #2 is available.
Vulnerable software Subscribe	ImageMagick Client/Desktop applications / Multimedia software
Vendor	ImageMagick.org

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU20300

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-14980

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error within the UnmapBlob() function when images. A remote attacker can create a specially crafted image file, pass it to the affected application and perform denial of service attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

ImageMagick: 6.9.0-0 - 7.0.8-41

External links

http://github.com/ImageMagick/ImageMagick/commit/c5d012a46ae22be9444326aa37969a3f75daa3ba
http://github.com/ImageMagick/ImageMagick/compare/7.0.8-41...7.0.8-42
http://github.com/ImageMagick/ImageMagick6/commit/614a257295bdcdeda347086761062ac7658b6830
http://github.com/ImageMagick/ImageMagick6/issues/43

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.

2) Out-of-bounds read

EUVDB-ID: #VU21061

Risk: Medium

CVSSv3.1: 5.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2019-15139

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause a denial of service (DoS) condition on the target system.

The vulnerability exists in "ReadXWDImage" in the "coders/xwd.c" file due to a boundary condition when reading on XWD files. A remote attacker can create a specially crafted XWD image file, trick the victim into opening it, trigger out-of-bounds read error and crash the application.