Ubuntu update for nginx

1) Inconsistent interpretation of HTTP requests

EUVDB-ID: #VU24230

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-20372

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

Exploit availability: No

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

External links

http://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.