#VU17476 Heap-based buffer overflow in Unit - CVE-2019-7401

Vulnerability identifier: #VU17476

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-2019-7401

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Unit
Server applications / Application servers

Vendor: NGINX

Description

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

The vulnerability exists due to a boundary error when processing malicious input. A remote attacker can supply a specially crafted request, trigger heap-based buffer overflow and cause the router process to crash.

Mitigation
Update to version 1.7.1.

Vulnerable software versions

Unit: 0.3 - 1.7

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External links
https://hg.nginx.org/unit/file/tip/CHANGES
https://mailman.nginx.org/pipermail/unit/2019-February/000113.html
https://unit.nginx.org/CHANGES.txt

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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.