Ubuntu update for nginx



| Updated: 2025-05-09
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-20372
CWE-ID CWE-444
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 nginx (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Inconsistent interpretation of HTTP requests

EUVDB-ID: #VU24230

Risk: Medium

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2019-20372

CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to perform HTTP request smuggling attacks.

The vulnerability exists with certain error_page configurations. A remote attacker can read unauthorized web pages in environments where NGINX is being fronted by a load balancer.

Mitigation

Update the affected packages.

Ubuntu 19.10
nginx-common - 1.16.1-0ubuntu2.1
nginx-core - 1.16.1-0ubuntu2.1
nginx-extras - 1.16.1-0ubuntu2.1
nginx-full - 1.16.1-0ubuntu2.1
nginx-light - 1.16.1-0ubuntu2.1
Ubuntu 19.04
nginx-common - 1.15.9-0ubuntu1.2
nginx-core - 1.15.9-0ubuntu1.2
nginx-extras - 1.15.9-0ubuntu1.2
nginx-full - 1.15.9-0ubuntu1.2
nginx-light - 1.15.9-0ubuntu1.2
Ubuntu 18.04 LTS
nginx-common - 1.14.0-0ubuntu1.7
nginx-core - 1.14.0-0ubuntu1.7
nginx-extras - 1.14.0-0ubuntu1.7
nginx-full - 1.14.0-0ubuntu1.7
nginx-light - 1.14.0-0ubuntu1.7
Ubuntu 16.04 LTS
nginx-common - 1.10.3-0ubuntu0.16.04.5
nginx-core - 1.10.3-0ubuntu0.16.04.5
nginx-extras - 1.10.3-0ubuntu0.16.04.5
nginx-full - 1.10.3-0ubuntu0.16.04.5
nginx-light - 1.10.3-0ubuntu0.16.04.5

Vulnerable software versions

nginx (Ubuntu package): 1.10.3-0ubuntu0.16.04.1 - 1.15.9-0ubuntu1.1

CPE2.3 External links

https://usn.ubuntu.com/4235-1/


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.



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