#VU49164 NULL pointer dereference in Cherokee webserver - CVE-2020-12845

Vulnerability identifier: #VU49164

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-2020-12845

CWE-ID: CWE-476

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cherokee webserver
Server applications / Web servers

Vendor: Cherokee-project

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 cherokee_validator_parse_basic or cherokee_validator_parse_digest. A remote attacker can send a specially crafted HTTP request and perform a denial of service (DoS) attack.

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

Vulnerable software versions

Cherokee webserver: 0.4.27 - 1.2.104

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External links
https://cherokee-project.com/downloads.html
https://github.com/cherokee/webserver/issues/1242
https://github.com/cherokee/webserver/releases
https://security.gentoo.org/glsa/202012-09

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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.