GHSA-63fq-8fp9-vhwq · Severity: high · Ecosystem: pip — OpenStack Compute (Nova) Denial of service via a large number of calls to the addFixedIp function
OpenStack Compute (Nova) Grizzly, Folsom (2012.2), and Essex (2012.1) does not properly implement a quota for fixed IPs, which allows remote authenticated users to cause a denial of service (resource exhaustion and failure to spawn new instances) via a large number of calls to the addFixedIp function.
Conclusion & alert: CVE-2013-1838 is rated Moderate Risk (46.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.74%). Core evidence: EPSS rose +1.31% over the last day, indicating growing attacker interest. Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 1.43% | 2.74% | +1.31% |
| 2 | 2025-03-30 | 3.11% | 1.43% | -1.69% |
| 3 | 2025-03-29 | — | 3.11% | — |
Full EPSS history (6 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.0 | 2.0 | MEDIUM |
|
8.0 | 2.9 | [email protected] |
GHSA-63fq-8fp9-vhwq · Severity: high · Ecosystem: pip — OpenStack Compute (Nova) Denial of service via a large number of calls to the addFixedIp function
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2013-1838 not yet assigned priority: Debian including 1 source packages (nova), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2013-1838 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2013-1838 |
ubuntu
|
medium | CVE-2013-1838 medium priority: Ubuntu including 1 source packages (nova), 6 status rows across 6 suites (hardy, lucid, oneiric, precise, quantal, upstream): released 3, DNE 2, pending 1. | https://ubuntu.com/security/CVE-2013-1838 |
: Per http://www.ubuntu.com/usn/usn-1771-1/ "A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 12.10 Ubuntu 12.04 LTS Ubuntu 11.10"
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| openstack | essex | 2012.1 | cpe:2.3:a:openstack:essex:2012.1:*:*:*:*:*:*:* |
| openstack | folsom | 2012.2 | cpe:2.3:a:openstack:folsom:2012.2:*:*:*:*:*:*:* |
| openstack | grizzly | 2012.2 | cpe:2.3:a:openstack:grizzly:2012.2:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 11.10 | cpe:2.3:o:canonical:ubuntu_linux:11.10:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 12.04 | cpe:2.3:o:canonical:ubuntu_linux:12.04:-:lts:*:*:*:*:* |
| canonical | ubuntu_linux | 12.10 | cpe:2.3:o:canonical:ubuntu_linux:12.10:*:*:*:*:*:*:* |