#VU48482 Out-of-bounds read in Raptor RDF Syntax Library - CVE-2020-25713

Vulnerability identifier: #VU48482

Vulnerability risk: Medium

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2020-25713

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Raptor RDF Syntax Library
Universal components / Libraries / Libraries used by multiple products

Vendor: dajobe

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the raptor_xml_writer_start_element_common() function in raptor_xml_writer.c. A remote attacker can create a specially crafted PDF file, trick the victim into opening it, trigger an out-of-bounds read error and read contents of memory on the system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Raptor RDF Syntax Library: 2.1.9.0 - 2.2.0.15

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External links
https://seclists.org/oss-sec/2020/q4/128
https://bugs.librdf.org/mantis/view.php?id=650

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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. However, proof of concept for this vulnerability is available.