Infinite loop in GraphicsMagick

1) Infinite loop

EUVDB-ID: #VU33215

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-5685

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

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

In GraphicsMagick 1.3.27, there is an infinite loop and application hang in the ReadBMPImage function (coders/bmp.c). Remote attackers could leverage this vulnerability to cause a denial of service via an image file with a crafted bit-field mask value.

Mitigation

Install update from vendor's website.

Vulnerable software versions

GraphicsMagick: 1.3.27

External links

http://hg.graphicsmagick.org/hg/GraphicsMagick/rev/52a91ddb1aa6
http://lists.debian.org/debian-lts-announce/2018/01/msg00018.html
http://lists.debian.org/debian-lts-announce/2018/08/msg00002.html
http://sourceforge.net/p/graphicsmagick/bugs/541/
http://www.debian.org/security/2018/dsa-4321

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.