Vulnerability Report

CVE-2011-4407

Title: Canonical Software-Properties Improper Input Validation

Input Validation Error

Proof Of Concept

No public PoC currently indexed for CVE-2011-4407.

CWE Category CWE-20

Published Date May 14, 2014

Modified Date Jun 16, 2026

Exploit Status Not Found

Score 4.3 CVSS v2.0

Exploit Probability (EPSS)

0.63%

Vulnerability Summary

CVE-2011-4407: ppa.py in Software Properties before 0.81.13.3 does not validate the server certificate when downloading PPA GPG key fingerprints, which allows man-in-the-middle (MITM) attackers to spoof GPG keys for a package repository.

Impacted Vendors

marc_deslauriers 1

canonical 1

Reference Links

http://www.ubuntu.com/usn/USN-1352-1 https://bugs.launchpad.net/ubuntu/%2Bsource/software-properties/%2Bbug/915210 http://www.ubuntu.com/usn/USN-1352-1 https://bugs.launchpad.net/ubuntu/%2Bsource/software-properties/%2Bbug/915210

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

4.3

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:M/Au:N/C:N/I:P/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2011-4407 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

June 16, 2026 MODIFIED

Vulnerability data updated via NVD.

May 06, 2026 MODIFIED

Vulnerability data updated via NVD.

May 06, 2026 MODIFIED

Vulnerability data updated via NVD.

April 12, 2025 MODIFIED

Vulnerability data or affected products updated.

May 14, 2014 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A

Complexity N/A

Privileges N/A

Interaction NONE

CVSS Vector String


                                    AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected Stack

No specific products linked.