Security readout for executives and security teams
Plain-English summary
A person with physical access to an affected Ubuntu phone could cause Unity8 to expose the device’s MTP file-transfer service from the emergency dialer context. That could expose or allow changes to user data without normal unlocking. The issue is fixed in named Canonical Unity8 package versions.
Executive priority
Prioritize remediation if any Ubuntu phone or Unity8-based devices remain in production, labs, or executive use. The weakness requires physical access, but the potential data exposure and integrity impact are high.
Technical view
CVE-2015-7946 is a CWE-200 information exposure flaw in Canonical Unity8 8.11. The CVSS vector is physical, low complexity, no privileges, no user interaction, changed scope, high confidentiality and integrity impact, and no availability impact. Sources identify fixed packages for Ubuntu 16.04 and 15.04 lines.
Likely exposure
Exposure is likely limited to devices or images running affected Unity8 8.11 builds, especially Ubuntu phone deployments. The source also says Unity8 shipped elsewhere may be affected, but does not name additional products.
Exploitation context
The source bundle does not show known active exploitation, and KEV is false. The attack context is physical access to the device and emergency dialer state, not remote network exploitation.
Researcher notes
Evidence is concise: CVE metadata names Unity8 8.11, CWE-200, physical attack vector, and fixed Canonical package versions. The phrase “possibly elsewhere” is not enough to assert other affected products without vendor confirmation.
Mitigation direction
- Upgrade Unity8 to 8.11+16.04.20160111.1-0ubuntu1 or later where applicable.
- Upgrade Unity8 to 8.11+15.04.20160122-0ubuntu1 or later where applicable.
- Inventory any legacy Ubuntu phone or Unity8-based devices still in use.
- Restrict physical access to affected devices until fixed.
- Check Canonical guidance before applying unsupported workarounds.
Validation and detection
- Identify installed Unity8 package versions on in-scope devices or images.
- Compare versions against the fixed package versions named by Canonical.
- Confirm whether devices expose MTP while locked or in emergency UI only in authorized testing.
- Review asset records for Unity8 shipped outside Ubuntu phone images.
- Document any legacy devices that cannot receive fixed packages.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2015-7946 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N0.95.8Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.3HighVector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://launchpad.net/bugs/1525981CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.