Amazon Linux AMI update for nginx

1) Improper access control

EUVDB-ID: #VU32495

Risk: Medium

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

CVE-ID: CVE-2014-3616

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

nginx 0.5.6 through 1.7.4, when using the same shared ssl_session_cache or ssl_session_ticket_key for multiple servers, can reuse a cached SSL session for an unrelated context, which allows remote attackers with certain privileges to conduct "virtual host confusion" attacks.

Mitigation

Update the affected packages:

i686:
    nginx-1.6.2-1.22.amzn1.i686
    nginx-debuginfo-1.6.2-1.22.amzn1.i686

src:
    nginx-1.6.2-1.22.amzn1.src

x86_64:
    nginx-1.6.2-1.22.amzn1.x86_64
    nginx-debuginfo-1.6.2-1.22.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2014-421.html

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.