#VU38216 NULL pointer dereference in Bento4 - CVE-2017-14638

Vulnerability identifier: #VU38216

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-14638

CWE-ID: CWE-476

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Bento4
Universal components / Libraries / Libraries used by multiple products

Vendor: axiomatic-systems

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 in Core/Ap4AtomFactory.cpp in Bento4 version 1.5.0-617 has missing NULL checks, leading to a NULL pointer dereference, segmentation fault, and application crash in AP4_Atom::SetType in Core/Ap4Atom.h. A remote attacker can perform a denial of service (DoS) attack.

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

Vulnerable software versions

Bento4: 1.5.0-617

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External links
https://blogs.gentoo.org/ago/2017/09/14/bento4-null-pointer-dereference-in-ap4_atomsettype-ap4atom-h/
https://github.com/axiomatic-systems/Bento4/commit/be7185faf7f52674028977dcf501c6039ff03aa5
https://github.com/axiomatic-systems/Bento4/issues/182

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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.