#VU17370 Heap-based buffer over-read in Poppler - CVE-2019-7310

Vulnerability identifier: #VU17370

Vulnerability 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

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 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

---

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.

Is there known malware, which exploits this vulnerability?

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