Vulnerability identifier: #VU16831

Vulnerability risk: Low

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2018-20551

CWE-ID: CWE-617

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Poppler
Client/Desktop applications / Office applications

Vendor: Freedesktop.org

Description

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

The vulnerability exists due to reachable Object::getString assertion due to construction of invalid rich media annotation assets in the AnnotRichMedia class in Annot.c. A remote attacker can cause a denial of service.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Poppler: 0.72

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External links
http://gitlab.freedesktop.org/poppler/poppler/issues/703
http://gitlab.freedesktop.org/poppler/poppler/merge_requests/146

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