CVE-2013-0335: canonical ubuntu_linux Insufficient Session Expiration
CVSS: 7.6v3.1HighModified
AliasesGHSA-qfp8-hfqx-c79cPYSEC-2013-43DEBIAN-CVE-2013-0335
Published 22-03-2013Last modified 31-07-2026
Vulnerability summary
CVE-2013-0335 is a high (CVSS 7.6) Insufficient Session Expiration vulnerability in canonical ubuntu_linux. EPSS estimates a 2.14% chance of exploitation in the next 30 days, higher than 81.7% of scored vulnerabilities.
CVSS score
7.6/10
010
High · v3.1 (CVE.org)EPSS score
2.14%
0%100%
Low · +0.02 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 1Timeline
- 22-03-2013PublishedVulnerability first disclosed.
- 31-07-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
6 scores · 4 sources · 3 versionsHigh 7.1Preferred score · OSV · Pypi (Ecosystem advisory) · calculated from vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:NSourcesSingle source
High 7.6Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:LSources4 sources · 6.5–7.6
- NVDNIST7.6HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
- OSV · PypiEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:NDiffers
- OSV · DebianEcosystem advisory · calculated7.6HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
Medium 6.0Preferred score · NVD (NIST)
AV:N/AC:M/Au:S/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
2.14%
Chance of exploitation in the next 30 days
Percentile
82%
Versus all other CVEs
30-day change
+0.02 pp
From 2.12% on 19-09-2026
19-09-202619-10-2026
EPSS score2.14%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-613Insufficient Session ExpirationAccording to WASC, "Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization."
- CWE-264Permissions, Privileges, and Access ControlsWeaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control.
Affected systems
Canonical1 product
- ubuntu_linuxEOL11.10 | 12.04 | 12.10
Debian1 product
- nova< 2012.1.1-14
PyPI1 product
- nova< 12.0.0a0
4 vendors · 6 products
References
24 linksShow all 24 references
- github.com/openstack/novaPACKAGE
