Security readout for executives and security teams
Plain-English summary
This flaw let a logged-in local user on a system running vulnerable snapd turn their existing access into root control. It is not described as remotely exploitable by itself, but it is serious on shared servers, developer workstations, and any host where untrusted users can get shell access.
Executive priority
Patch promptly where snapd is present and local access is possible. This is not described as internet-routable by itself, but a foothold on a vulnerable host could become full system compromise.
Technical view
Canonical snapd before 2.37.1 incorrectly validated ownership on its socket. With low local privileges and no user interaction, an attacker could run arbitrary commands as root. The CVSS 3.0 score is 8.8 with changed scope and high impact to confidentiality, integrity, and availability.
Likely exposure
Linux systems running Canonical snapd versions earlier than 2.37.1 are in scope. Exposure is highest where local user accounts, compromised service users, or interactive shells exist. The provided CVE data does not include CPEs or a complete platform matrix.
Exploitation context
The bundle lists Exploit-DB references, so public exploit material exists. The bundle marks KEV as false and provides no cited evidence of active exploitation. Treat this as a practical local privilege escalation risk, not a confirmed actively exploited campaign.
Researcher notes
Evidence is strong for impact and affected version threshold. Gaps remain: no CWE is listed, no CPEs are provided, and active exploitation is not established. Public exploit references increase validation urgency, but avoid assuming exploitation without telemetry or cited confirmation.
Mitigation direction
- Upgrade snapd to version 2.37.1 or later using vendor packages.
- Review Ubuntu USN-3887-1 for distribution-specific fixed package guidance.
- Prioritize shared systems, developer workstations, and hosts with untrusted local users.
- Reduce unnecessary local account access until vulnerable snapd versions are removed.
- Monitor for unexpected privileged command execution on affected hosts.
Validation and detection
- Inventory systems where Canonical snapd is installed.
- Confirm installed snapd versions are 2.37.1 or later.
- Identify hosts allowing interactive or service-level local access.
- Check whether vendor fixed packages from USN-3887-1 are applied.
- Review security logs for suspicious privilege escalation around affected systems.
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.
Privilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2019-7304 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
- 8.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H26Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
8.8HighVector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://usn.ubuntu.com/3887-1/CVE reference · x_refsource_MISC
- https://www.exploit-db.com/exploits/46361CVE reference · x_refsource_MISC
- https://www.exploit-db.com/exploits/46362CVE reference · x_refsource_MISC
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.