Ubuntu update for poppler

Published: 2019-01-22 | Updated: 2023-02-01

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2018-20481 CVE-2018-20650
CWE-ID	CWE-476 CWE-617
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #2 is available.
Vulnerable software Subscribe	poppler (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) NULL pointer dereference

EUVDB-ID: #VU16709

Risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-20481

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to a NULL pointer dereference error when XRef::getEntry in XRef.cc mishandles unallocated XRef entries. A remote attacker can trigger denial of service conditions via a specially crafted PDF document, when XRefEntry::setFlag in XRef.h is called from Parser::makeStream in Parser.cc.

Mitigation

Update the affected packages.

Ubuntu 18.10: libpoppler79 - 0.68.0-0ubuntu1.4; poppler-utils - 0.68.0-0ubuntu1.4
Ubuntu 18.04 LTS: libpoppler73 - 0.62.0-2ubuntu2.6; poppler-utils - 0.62.0-2ubuntu2.6
Ubuntu 16.04 LTS: libpoppler58 - 0.41.0-0ubuntu1.11; poppler-utils - 0.41.0-0ubuntu1.11
Ubuntu 14.04 LTS: libpoppler44 - 0.24.5-2ubuntu4.15; poppler-utils - 0.24.5-2ubuntu4.15

Vulnerable software versions

poppler (Ubuntu package): 0.24.5-2 - 0.68.0-0ubuntu1.3

External links

http://usn.ubuntu.com/3865-1/

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) Reachable Assertion

EUVDB-ID: #VU16829