Vulnerability identifier: #VU29368

Vulnerability risk: Medium

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

CVE-ID: CVE-2020-13902

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 gain access to potentially sensitive information.

The vulnerability exists due to heap-based buffer over-read in "BlobToStringInfo" in "MagickCore/string.c" during TIFF image decoding. A remote attacker can trigger out-of-bounds read error and read contents of memory on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

ImageMagick: 7.0.10-0 - 7.0.10-17, 7.0.9-27

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External links
http://bugs.chromium.org/p/oss-fuzz/issues/detail?id=20920
http://github.com/ImageMagick/ImageMagick/discussions/2132
http://github.com/ImageMagick/ImageMagick/commit/824f344ceb823e156ad6e85314d79c087933c2a0

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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.