Openstack nova: vnc proxy can connect to the wrong vm

Description

OpenStack Compute (Nova) Grizzly, Folsom (2012.2), and Essex (2012.1) allows remote authenticated users to gain access to a VM in opportunistic circumstances by using the VNC token for a deleted VM that was bound to the same VNC port.

Scores

EPSS (exploitation in 30 days)

2.1% · top 18% of all CVEs (5 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.6.

Weakness

• CWE-613: Insufficient Session Expiration (opens in a new tab)All about CWE-613 and its CVEs
• CWE-264 (opens in a new tab)All about CWE-264 and its CVEs

Affected products

• Red Hat · OpenStack Folsom for RHEL 6

  • unaffected 0:2012.2.3-7.el6ost – < *

• Red Hat · Red Hat OpenStack Platform 13 (Queens)

  All versions: unaffected

• Red Hat · Red Hat OpenStack Platform 13 (Queens)

  All versions: unaffected

• Red Hat · Red Hat OpenStack Platform 16.2

  All versions: unaffected

• Red Hat · Red Hat OpenStack Platform 16.2

  All versions: unaffected

• Red Hat · Red Hat OpenStack Platform 17.1

  All versions: unaffected

• Red Hat · Red Hat OpenStack Platform 17.1

  All versions: unaffected

• Red Hat · Red Hat OpenStack Platform 18.0

  All versions: unaffected

Affected packages

From reviewed advisories of the GitHub Advisory Database.

• PyPINovaGHSA-qfp8-hfqx-c79c (opens in a new tab)

What to do

Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

References (13)

• http://rhn.redhat.com/errata/RHSA-2013-0709.html (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• http://secunia.com/advisories/52337 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://secunia.com/advisories/52728 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://www.openwall.com/lists/oss-security/2013/02/26/7 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• http://www.osvdb.org/90657 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
• http://www.ubuntu.com/usn/USN-1771-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• RHSA-2013:0709 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
• https://access.redhat.com/security/cve/CVE-2013-0335 (opens in a new tab)vdb-entryx_refsource_REDHAT
• https://bugs.launchpad.net/nova/+bug/1125378 (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://github.com/advisories/GHSA-qfp8-hfqx-c79c (opens in a new tab)
• https://review.openstack.org/#/c/22086/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://review.openstack.org/#/c/22758 (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://review.openstack.org/#/c/22872/ (opens in a new tab)x_refsource_CONFIRMx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisory GHSA-qfp8-hfqx-c79c (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2013-0335](https://trackcve.app/badge/CVE-2013-0335.svg)](https://trackcve.app/cve/CVE-2013-0335)

Record last updated 31 Jul 2026, 14:23 UTC.