ppa.py in Software Properties before 0.81.13.3 does not validate the server certificate…
Priority LOW 21CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- —
- Confidentiality · integrity · availability
- None · Partial · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.00632 50th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:canonical:software-properties:*:*:*:*:*:*:*:* | up to 0.81.13.1 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:10.04:-:lts:*:*:*:*:* | 10.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:10.10:*:*:*:*:*:*:* | 10.10 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:11.04:*:*:*:*:*:*:* | 11.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:11.10:*:*:*:*:*:*:* | 11.10 | Vulnerable | Canonical |
- cpe:2.3:a:canonical:software-properties:*:*:*:*:*:*:*:* Versions up to 0.81.13.1 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:10.04:-:lts:*:*:*:*:* Versions 10.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:10.10:*:*:*:*:*:*:* Versions 10.10 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:11.04:*:*:*:*:*:*:* Versions 11.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:11.10:*:*:*:*:*:*:* Versions 11.10 Vulnerable ·Canonical
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2011-4407
- 2026-10-03 Alias added: GHSA-m49h-wwcv-rf5m
- 2026-10-25 EPSS moved to the 50th–90th percentile
References
More Canonical Software-properties vulnerabilities
- TI-2012-00879 software-properties incorrectly validated TLS certificates CVSS 3.1HIGH 7.4
Sources
- CVE-2011-4407 · CVE Program
- CVE-2011-4407 · NVD
- FIRST EPSS
- GHSA-m49h-wwcv-rf5m · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences