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Vulnerability record · CVE-2011-4076 · published 26 November 2019

CVE-2011-4076: Openstack nova information exposure vulnerability

Openstack · Nova

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.

5.9 CVSS 3.1 Medium EPSS 1.5% · top 27.5% CWE-200 · Information exposure
5.9CVSS 3.1 base score, v2 4.3
1.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References, 4 tagged exploit
16 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/security/cve/cve-2011-4076 Third Party Advisory
https://bugs.launchpad.net/nova/+bug/868360 ExploitIssue TrackingPatchThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4076 ExploitIssue TrackingThird Party Advisory
https://security-tracker.debian.org/tracker/CVE-2011-4076 PatchThird Party Advisory
https://www.openwall.com/lists/oss-security/2011/10/25/4 Mailing ListPatchThird Party Advisory
https://access.redhat.com/security/cve/cve-2011-4076 Third Party Advisory
https://bugs.launchpad.net/nova/+bug/868360 ExploitIssue TrackingPatchThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4076 ExploitIssue TrackingThird Party Advisory
https://security-tracker.debian.org/tracker/CVE-2011-4076 PatchThird Party Advisory
https://www.openwall.com/lists/oss-security/2011/10/25/4 Mailing ListPatchThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2017-7214Openstack nova sensitive information in log file vulnerabilityAn issue was discovered in exception_wrapper.py in OpenStack Nova 13.x through 13.1.3, 14.x through 14.0.4, and 15.x through 15.0.1. Legacy notificat…EPSS 2.3%8.6CVE-2011-3147Openstack nova information exposure vulnerabilityVersions of nova before 2012.1 could expose hypervisor host files to a guest operating system when processing a maliciously constructed qcow filesyst…EPSS 0.74%8.6CVE-2017-17051Openstack nova uncontrolled resource consumption vulnerabilityAn issue was discovered in the default FilterScheduler in OpenStack Nova 16.0.3. By repeatedly rebuilding an instance with new images, an authenticat…EPSS 2.0%8.5CVE-2026-46448Openstack nova vulnerabilityIn OpenStack Nova before 33.0.2, the server create API does not strip certain hint data. The resulting instance has no Placement allocation.EPSS 0.46%8.3CVE-2020-17376Openstack nova xml external entity (xxe) vulnerabilityAn issue was discovered in Guest.migrate in virt/libvirt/guest.py in OpenStack Nova before 19.3.1, 20.x before 20.3.1, and 21.0.0. By performing a so…EPSS 1.7%7.5CVE-2017-18191Openstack nova vulnerabilityAn issue was discovered in OpenStack Nova 15.x through 15.1.0 and 16.x through 16.1.1. By detaching and reattaching an encrypted volume, an attacker …EPSS 3.7%7.5CVE-2015-5162Openstack cinder vulnerabilityThe image parser in OpenStack Cinder 7.0.2 and 8.0.0 through 8.1.1; Glance before 11.0.1 and 12.0.0; and Nova before 12.0.4 and 13.0.0 does not prope…EPSS 3.1%6.8CVE-2015-3280Openstack nova vulnerabilityOpenStack Compute (nova) before 2014.2.4 (juno) and 2015.1.x before 2015.1.2 (kilo) does not properly delete instances from compute nodes, which allo…EPSS 3.4%

Source: NIST National Vulnerability Database (record CVE-2011-4076), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.