Denial of service in Poppler

1) Heap-based buffer over-read

EUVDB-ID: #VU17370

Risk: Low

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-7310

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The vulnerability exists due to an integer signedness error in the XRef::getEntry function in XRef.cc. A remote attacker can trick the victim into processing a specially crafted PDF document, as demonstrated by pdftocairo, trigger heap-based buffer over-read and perform a denial of service.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Poppler: 0.73.0

CPE2.3

• cpe:2.3:a:freedesktop_org:poppler:0.73.0:*:*:*:*:*:*:*

External links

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12797
https://gitlab.freedesktop.org/poppler/poppler/issues/717

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.