CVE-2011-4076: Nova OpenStack Nova Exposure Of Sensitive Vulnerability

MODERATE
Advisory Identifier: GHSA-vcmv-6rxx-fh7r
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CVSS 5.9
CWE-200
Published
Advisory Summary

CVE-2011-4076 is a MODERATE (CVSS 5.9) openstack nova exposure of sensitive vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Nova libraries in the PyPI ecosystem. The issue involves openstack nova exposure of sensitive information to an unauthorized actor. Remediation is available by upgrading affected packages to version 12.0.0a0.

CVE-2011-4076 at a Glance

CVE Identifier CVE-2011-4076
GHSA Identifier GHSA-vcmv-6rxx-fh7r
Severity MODERATE
CVSS v3.1 Base Score 5.9
CWE Classification CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Affected Product Nova
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 5.9

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2011-4076

To remediate this vulnerability, upgrade all affected Nova dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

nova fixed: 12.0.0a0 
pip install nova>=12.0.0a0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show nova

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2011-4076, inspect your installed packages using pip:

pip show nova

Analyze the terminal output to locate any version of Nova in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 12.0.0a0), your application is affected.

Note: The pip show nova command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor, where the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. In Nova, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2011-4076 Affected Nova Versions

1 component(s)
Fixed Versions:
12.0.0a0
Product / Package Ecosystem Affected Versions Fixed Version
nova
pypi/nova
PyPI
< 12.0.0a0
12.0.0a0

References

NVD — CVE-2011-4076 NVD
https://nvd.nist.gov/vuln/detail/CVE-2011-4076
Security Fix Commit FIX COMMIT
https://github.com/openstack/nova/commit/b1ab6da1495784ff581000018a6047fd19cf82c4
Security Fix Commit FIX COMMIT
https://github.com/openstack/nova/commit/beee11edbfdd82cd81bc9c0fd75912c167892c2b
Nova Security Information SECURITY
https://access.redhat.com/security/cve/cve-2011-4076
bugs.launchpad.net/nova/+bug/868360 WEB
https://bugs.launchpad.net/nova/+bug/868360
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4076
Nova Security Information SECURITY
https://security-tracker.debian.org/tracker/CVE-2011-4076
Nova Security Information SECURITY
https://www.openwall.com/lists/oss-security/2011/10/25/4

Frequently Asked Questions

What is CVE-2011-4076?
CVE-2011-4076 is a security vulnerability in Nova involving OpenStack Nova Exposure of Sensitive Information to an Unauthorized Actor under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
Which Nova versions are affected?
Affected versions include releases prior to 12.0.0a0 across affected packages: nova.
What version fixes CVE-2011-4076?
Upgrading to 12.0.0a0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is nova affected?
Yes, nova is affected in releases prior to 12.0.0a0. Upgrade your dependency to 12.0.0a0 or later.
What is the CVSS score of CVE-2011-4076?
CVE-2011-4076 has a CVSS v3.1 base score of 5.9 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2011-4076?
CVE-2011-4076 is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor (The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.).
How can I check PyPI dependencies for CVE-2011-4076?
Run the dependency tree command: 'pip show nova'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-vcmv-6rxx-fh7r",
  "modified" : "2024-05-08T19:51:54Z",
  "published" : "2022-04-22T00:24:18Z",
  "aliases" : [ "CVE-2011-4076" ],
  "summary" : "OpenStack Nova Exposure of Sensitive Information to an Unauthorized Actor",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "nova"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "12.0.0a0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2011-4076"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openstack/nova/commit/b1ab6da1495784ff581000018a6047fd19cf82c4"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openstack/nova/commit/beee11edbfdd82cd81bc9c0fd75912c167892c2b"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/security/cve/cve-2011-4076"
  }, {
    "type" : "WEB",
    "url" : "https://bugs.launchpad.net/nova/+bug/868360"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4076"
  }, {
    "type" : "WEB",
    "url" : "https://security-tracker.debian.org/tracker/CVE-2011-4076"
  }, {
    "type" : "WEB",
    "url" : "https://www.openwall.com/lists/oss-security/2011/10/25/4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-05-08T19:51:54Z",
    "nvd_published_at" : "2019-11-26T04:15:00Z"
  }
}