CVE-2011-3152

DistUpgrade/DistUpgradeFetcherCore.py in Update Manager before 1:0.87.31.1, 1:0.134.x before 1:0.134.11.1, 1:0.142.x before 1:0.142.23.1, 1:0.150.x before 1:0.150.5.1, and 1:0.152.x before 1:0.152.25.5 on Ubuntu 8.04 through 11.10 does not verify the GPG signature before extracting an upgrade tarball, which allows man-in-the-middle attackers to (1) create or overwrite arbitrary files via a directory traversal attack using a crafted tar file, or (2) bypass authentication via a crafted meta-release file.

Published: 2014-04-27 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-3152 is rated Moderate Risk (55.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.27%). EPSS rose +1.72% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2011-3152

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 0.55% 2.27% +1.72%
2 2026-05-12 0.44% 0.55% +0.11%
3 2025-03-30 — 0.44% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-3152

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.4 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 4.9 [email protected]

Weakness enumeration for CVE-2011-3152

OS Trackers for CVE-2011-3152

vendor priority summary link
ubuntu medium CVE-2011-3152 medium priority: Ubuntu including 1 source packages (update-manager), 6 status rows across 6 suites (hardy, lucid, maverick, natty, oneiric, upstream): released 5, needs-triage 1. https://ubuntu.com/security/CVE-2011-3152

Affected software / configurations for CVE-2011-3152

Vendor Product Version Raw CPE
canonical update-manager <= 1\:0.87.24 cpe:2.3:a:canonical:update-manager:*:*:*:*:*:*:*:*
canonical update-manager 1:0.134.7 cpe:2.3:a:canonical:update-manager:1\:0.134.7:*:*:*:*:*:*:*
canonical update-manager 1:0.142.19 cpe:2.3:a:canonical:update-manager:1\:0.142.19:*:*:*:*:*:*:*
canonical update-manager 1:0.150 cpe:2.3:a:canonical:update-manager:1\:0.150:*:*:*:*:*:*:*
canonical update-manager 1:0.152.25 cpe:2.3:a:canonical:update-manager:1\:0.152.25:*:*:*:*:*:*:*
canonical ubuntu_linux 8.04 cpe:2.3:o:canonical:ubuntu_linux:8.04:-:lts:*:*:*:*:*
canonical ubuntu_linux 10.04 cpe:2.3:o:canonical:ubuntu_linux:10.04:-:lts:*:*:*:*:*
canonical ubuntu_linux 10.10 cpe:2.3:o:canonical:ubuntu_linux:10.10:*:*:*:*:*:*:*
canonical ubuntu_linux 11.04 cpe:2.3:o:canonical:ubuntu_linux:11.04:*:*:*:*:*:*:*
canonical ubuntu_linux 11.10 cpe:2.3:o:canonical:ubuntu_linux:11.10:*:*:*:*:*:*:*

References for CVE-2011-3152

cvelogic Threat Intelligence