#VU31219 Information disclosure in ImageMagick - CVE-2018-16323

Vulnerability identifier: #VU31219

Vulnerability risk: Medium

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-16323

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ImageMagick
Client/Desktop applications / Multimedia software

Vendor: ImageMagick.org

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

ReadXBMImage in coders/xbm.c in ImageMagick before 7.0.8-9 leaves data uninitialized when processing an XBM file that has a negative pixel value. If the affected code is used as a library loaded into a process that includes sensitive information, that information sometimes can be leaked via the image data.

Mitigation
Install update from vendor's website.

Vulnerable software versions

ImageMagick: 7.0.0-0, 7.0.1-0 - 7.0.1-10, 7.0.2-0 - 7.0.2-10, 7.0.3-0 - 7.0.3-10, 7.0.4-0 - 7.0.4-10, 7.0.5-0 - 7.0.5-10, 7.0.6-0 - 7.0.6-10, 7.0.7-0 Q16 - 7.0.7-39, 7.0.8-0 - 7.0.8-8

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External links
https://github.com/ImageMagick/ImageMagick/commit/216d117f05bff87b9dc4db55a1b1fadb38bcb786
https://usn.ubuntu.com/3785-1/
https://usn.ubuntu.com/4034-1/
https://www.exploit-db.com/exploits/45890/

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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.