#VU81718 Uncontrolled recursion in Poppler - CVE-2020-23804

Vulnerability identifier: #VU81718

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-23804

CWE-ID: CWE-674

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 uncontrolled recursion in pdfinfo and pdftops. A remote attacker can pass a specially crafted document to application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Poppler: 0.89.0

---

External links
https://gitlab.freedesktop.org/poppler/poppler/-/issues/936
https://gitlab.freedesktop.org/poppler/poppler/-/commit/ec8a43c8df29fdd6f1228276160898ccd9401c92
https://gitlab.freedesktop.org/poppler/poppler/-/merge_requests/584

---

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.