Ubuntu update for poppler

Published: 2023-08-21

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-36023 CVE-2020-36024
CWE-ID	CWE-835 CWE-476
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Ubuntu Operating systems & Components / Operating system libpoppler58 (Ubuntu package) Operating systems & Components / Operating system package or component libpoppler73 (Ubuntu package) Operating systems & Components / Operating system package or component libpoppler97 (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Infinite loop

EUVDB-ID: #VU79769

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-2020-36023

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

Exploit availability: No

Description

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

The vulnerability exists due to infinite loop within the FoFiType1C::cvtGlyph() function. A remote attacker can pass a specially crafted PDF file to the server, consume all available system resources and cause denial of service conditions.

Mitigation

Update the affected package poppler to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 20.04

libpoppler58 (Ubuntu package): before Ubuntu Pro

libpoppler73 (Ubuntu package): before Ubuntu Pro

libpoppler97 (Ubuntu package): before 0.86.1-0ubuntu1.3

CPE2.3

External links

https://ubuntu.com/security/notices/USN-6299-1

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.

2) NULL pointer dereference

EUVDB-ID: #VU79770