Security readout for executives and security teams
Plain-English summary
This CVE concerns the Ubuntu pc-kernel snap build process, not a general runtime Ubuntu flaw. The build chroot allowed unauthenticated apt repositories, so a network-positioned attacker could potentially inject a malicious package during kernel snap builds.
Executive priority
Prioritize if your organization builds or distributes pc-kernel snap artifacts. The business risk is supply-chain compromise during build, potentially creating trusted artifacts from untrusted packages.
Technical view
pc-kernel build logic hardcoded apt options allowing insecure and unauthenticated repositories while creating the chroot. If an attacker can perform MITM between the build environment and Ubuntu archive, malicious packages could enter the build chroot. Affected versions are prior to and including 2019-07-16.
Likely exposure
Exposure is likely limited to teams building pc-kernel snap artifacts with affected build process versions. The sources do not state that deployed Ubuntu systems or unrelated snaps are directly affected.
Exploitation context
The bundle reports no CISA KEV listing and provides no evidence of active exploitation. Exploitation depends on MITM capability between the build environment and Ubuntu archive, plus use of the affected build process.
Researcher notes
The evidence identifies the vulnerable behavior and attacker position but does not provide detailed patch notes, exploit reports, or affected downstream artifact lists. Scope validation should focus on build provenance and apt authentication enforcement.
Mitigation direction
- Identify any pc-kernel build process versions dated 2019-07-16 or earlier.
- Check Canonical or Launchpad guidance before selecting the exact fixed revision.
- Remove unauthenticated or insecure apt repository options from build workflows.
- Use trusted network paths and authenticated Ubuntu archive access for builds.
- Rebuild affected artifacts from a trusted, corrected build environment if needed.
Validation and detection
- Review build configuration for unauthenticated apt repository options.
- Inventory pc-kernel artifacts built with affected revisions or dates.
- Check build logs for unauthenticated package warnings or repository authentication bypasses.
- Confirm current chroot creation fails on unauthenticated repository metadata.
- Validate build workers use trusted mirrors and protected network routes.
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
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ATT&CK lookup starting points
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CWE-353: Exact CWE lookup
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Open ATT&CK lookupCVE-2019-11480 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/AC:L/PR:H/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:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H1.76Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.4HighVector: CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11480CVE reference · x_refsource_MISC
- https://bugs.launchpad.net/bugs/1836041CVE 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.
Missing Support for Integrity Check
Missing Support for Integrity Check represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.