What’s Vulnerable › Vulnerabilities

CVE-2011-4076

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-11-26 · updated 2026-06-16
• Weakness: CWE-200

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.

Affected products

• OpenStack Nova: from 2010.1 before 2012.1 — fixed in 2012.1

How to fix

Upgrade to a fixed version: OpenStack Nova 2012.1. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/security/cve/cve-2011-4076
• https://bugs.launchpad.net/nova/+bug/868360
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4076
• https://security-tracker.debian.org/tracker/CVE-2011-4076
• https://www.openwall.com/lists/oss-security/2011/10/25/4
• https://access.redhat.com/security/cve/cve-2011-4076
• https://bugs.launchpad.net/nova/+bug/868360
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4076
• https://security-tracker.debian.org/tracker/CVE-2011-4076
• https://www.openwall.com/lists/oss-security/2011/10/25/4

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