#VU19184 Out-of-bounds read in ImageMagick - CVE-2019-13391

Vulnerability identifier: #VU19184

Vulnerability risk: Low

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2019-13391

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ImageMagick
Client/Desktop applications / Multimedia software

Vendor: ImageMagick.org

Description

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

The vulnerability exists due to heap-based buffer over-read because of incorrect calls to "GetCacheViewVirtualPixels" in the "ComplexImages" function, as defined in the "MagickCore/fourier.c" file. A remote attacker can make calls on the targeted system and perform a denial of service attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

ImageMagick: 7.0.8-50

---

External links
https://github.com/ImageMagick/ImageMagick/commit/7c2c5ba5b8e3a0b2b82f56c71dfab74ed4006df7
https://github.com/ImageMagick/ImageMagick/issues/1588
https://github.com/ImageMagick/ImageMagick6/commit/f6ffc702c6eecd963587273a429dcd608c648984

---

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. However, proof of concept for this vulnerability is available.