Quantum Secular Labs / Blog / Advisories

CVE-2018-15519: Various Lexmark devices have a Buffer Overflow (issue 1 of 2).

CVE-2018-15519 is rated critical with a CVSS v3.0 base score of 9.8 and NVD lists 32 affected products, including Lexmark Cx310 Firmware. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

Various Lexmark devices have a Buffer Overflow (issue 1 of 2).

Severity breakdown

CVSS v3.0 9.8: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

  • Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
  • Attack complexity: Low. No special conditions; the attack can be repeated reliably.
  • Privileges required: None. No account or prior access is needed.
  • User interaction: None. No action from any user is needed.
  • Scope: Unchanged. Impact stays within the vulnerable component.
  • Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
  • Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
  • Availability impact: High. Total loss of availability; the component can be shut down.

Underlying weakness

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary.

Affected products

  • Lexmark Cx310 Firmware: up to and including lw70.gm2.p204
  • Lexmark Cx410 Firmware: up to and including lw70.gm4.p204
  • Lexmark Cx510 Firmware: up to and including lw70.gm7.p204
  • Lexmark Xc2132 Firmware: up to and including lw70.gm7.p204
  • Lexmark Mx31x Firmware: up to and including lw70.sb2.p204
  • Lexmark Mx41x Firmware: up to and including lw70.sb4.p204
  • Lexmark Mx51x Firmware: up to and including lw70.sb4.p204
  • Lexmark Xm1145 Firmware: up to and including lw70.sb4.p204
  • Lexmark Mx61x Firmware: up to and including lw70.sb7.p204
  • Lexmark Xm3150 Firmware: up to and including lw70.sb7.p204
  • Lexmark Mx71x Firmware: up to and including lw70.tu.p204
  • Lexmark Mx81x Firmware: up to and including lw70.tu.p204
  • Lexmark Xm51xx Firmware: up to and including lw70.tu.p204
  • Lexmark Xm71xx Firmware: up to and including lw70.tu.p204
  • Lexmark Mx91x Firmware: up to and including lw70.mg.p204

References