CVE-2011-4076

Name: CVE-2011-4076
Creator: NVD / NIST
Published: 2019-11-26T04:15:11.137+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.9/10EPSS 1.45%

Last modified Jun 16, 2026

CVE-2011-4076 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. OpenStack Nova before 2012.1 allows someone with access to an EC2_ACCESS_KEY (equivalent to a username) to obtain the EC2_SECRET_KEY (equivalent to a password). Exposing the EC2_ACCESS_KEY via http or tools that allow man-in-the-middle over https could allow an attacker to easily obtain the EC2_SECRET_KEY. EPSS estimates a 1.45% chance of exploitation in the next 30 days.

Description

OpenStack Nova before 2012.1 allows someone with access to an EC2_ACCESS_KEY (equivalent to a username) to obtain the EC2_SECRET_KEY (equivalent to a password). Exposing the EC2_ACCESS_KEY via http or tools that allow man-in-the-middle over https could allow an attacker to easily obtain the EC2_SECRET_KEY. An attacker could also presumably brute force values for EC2_ACCESS_KEY.

Metrics

CVSS 3.1

5.9/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

1.45%

70.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Openstack	Nova	>= 2010.1, < 2012.1

References

https://access.redhat.com/security/cve/cve-2011-4076Third Party Advisory
https://bugs.launchpad.net/nova/+bug/868360Exploit, Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4076Exploit, Issue Tracking, Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2011-4076Patch, Third Party Advisory
https://www.openwall.com/lists/oss-security/2011/10/25/4Mailing List, Patch, Third Party Advisory
https://access.redhat.com/security/cve/cve-2011-4076Third Party Advisory
https://bugs.launchpad.net/nova/+bug/868360Exploit, Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4076Exploit, Issue Tracking, Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2011-4076Patch, Third Party Advisory
https://www.openwall.com/lists/oss-security/2011/10/25/4Mailing List, Patch, Third Party Advisory

Timeline

Published: Nov 26, 2019
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-4076?

How severe is CVE-2011-4076?

CVE-2011-4076 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 1.45% probability of exploitation in the next 30 days.

How do I fix CVE-2011-4076?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-4076?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST