CVE intelligence and bounded remediation
CVE-2019-18916 — Hp Color Laserjet Pro Mfp M277 B3Q11A Firmware security vulnerability
High
CVSS 7.8
A potential security vulnerability has been identified for HP LaserJet Solution Software (for certain HP LaserJet Printers) which may lead to unauthorized elevation of privilege on the client.
- Severity
- High
- CVSS
- 7.8 (3.1)
- Published
- 2021-11-09
- CISA KEV
- Not currently listed
- Ecosystem
- operating-system
- Weaknesses
- CWE-269
Affected products
- hp / color_laserjet_pro_mfp_m277_b3q11a_firmware
- hp / color_laserjet_pro_mfp_m277_b3q11v_firmware
- hp / color_laserjet_pro_mfp_m277_b3q10a_firmware
- hp / color_laserjet_pro_mfp_m277_b3q10v_firmware
- hp / color_laserjet_pro_mfp_m277_b3q17a_firmware
Matched remediation archetype
Privilege escalation and unsafe privilege management
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Check exposure
- Map service accounts, operating-system identities, roles, capabilities, impersonation, set-user transitions, and administrative helper paths.
- Determine whether untrusted users or lower-privilege processes can reach the affected transition or modify inputs it trusts.
- Review file, socket, registry, device, job, container, and cloud-role permissions used before and after privilege changes.
Remediate safely
- Apply the supported fix and redesign privileged operations as a minimal, authenticated, allowlisted interface.
- Drop privileges before processing untrusted input, verify the drop succeeds, and remove unnecessary roles, capabilities, and write permissions.
- Validate ownership and permissions at time of use and add explicit lower-to-higher privilege boundary tests.
Authoritative sources
Complete CVE record and remediation plan
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