#VU82603 Access of Uninitialized Pointer in Poppler - CVE-2020-27778

Vulnerability identifier: #VU82603

Vulnerability risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-27778

CWE-ID: CWE-824

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 crash the application.

The vulnerability exists due to a boundary error when converting PDF files to HTML. A remote attacker can trick the victim to convert a specially crafted file and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Poppler: before 0.76.0

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=1900712
https://lists.debian.org/debian-lts-announce/2022/09/msg00030.html

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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.