#VU32876 NULL pointer dereference in libupnp - CVE-2020-13848

Vulnerability identifier: #VU32876

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-13848

CWE-ID: CWE-476

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libupnp
Other software / Other software solutions

Vendor: pupnp.sourceforge.net

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. A remote attacker can trigger denial of service conditions via a crafted SSDP message due to a NULL pointer dereference in the functions FindServiceControlURLPath and FindServiceEventURLPath in genlib/service_table/service_table.c.

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

Vulnerable software versions

libupnp: 1.6.17 - 1.12.1

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External links
https://lists.opensuse.org/opensuse-security-announce/2020-06/msg00030.html
https://lists.opensuse.org/opensuse-security-announce/2020-06/msg00033.html
https://github.com/pupnp/pupnp/commit/c805c1de1141cb22f74c0d94dd5664bda37398e0
https://github.com/pupnp/pupnp/issues/177
https://lists.debian.org/debian-lts-announce/2020/06/msg00006.html

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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.