#VU16040 NULL pointer dereference in libsndfile - CVE-2018-19432

Vulnerability identifier: #VU16040

Vulnerability risk: Low

CVSSv4.0: 5.2 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2018-19432

CWE-ID: CWE-476

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libsndfile
Client/Desktop applications / Multimedia software

Vendor: Erik de Castro Lopo

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to NULL pointer dereference in the function sf_write_int in sndfile.c. A remote attacker can trigger NULL pointer dereference and cause the service to crash.

Mitigation
Install update from vendor's website.

Vulnerable software versions

libsndfile: 1.0.28

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External links
https://github.com/erikd/libsndfile/issues/427

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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.