#VU21061 Out-of-bounds read in ImageMagick - CVE-2019-15139

Vulnerability identifier: #VU21061

Vulnerability risk: Medium

CVSSv4.0: 5.2 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2019-15139

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 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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ImageMagick: 7.0.8-41 Q16

---

External links
https://github.com/ImageMagick/ImageMagick/commit/c78993d138bf480ab4652b5a48379d4ff75ba5f7
https://github.com/ImageMagick/ImageMagick/issues/1553

---

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.