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CVE-2019-14463

Published: 31 July 2019

An issue was discovered in libmodbus before 3.0.7 and 3.1.x before 3.1.5. There is an out-of-bounds read for the MODBUS_FC_WRITE_MULTIPLE_REGISTERS case, aka VD-1301.

From the Ubuntu Security Team

It was discovered that libmodbus incorrectly handled inputs. An attacker could possibly use this issue to cause a denial of service or other unspecified impact.

Notes

AuthorNote
ebarretto
Commit introduces regression, check if both commits are being applied.

Priority

Medium

Cvss 3 Severity Score

9.1

Score breakdown

Status

Package Release Status
libmodbus
Launchpad, Ubuntu, Debian
bionic
Released (3.0.6-2+deb9u1build0.18.04.1)
hirsute Not vulnerable
(3.1.6-1)
jammy Not vulnerable
(3.1.6-1)
disco Ignored
(end of life)
eoan Not vulnerable
(3.1.6-1)
focal Not vulnerable
(3.1.6-1)
groovy Not vulnerable
(3.1.6-1)
impish Not vulnerable
(3.1.6-1)
trusty
Released (3.0.5-1ubuntu0.1~esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream Needs triage

xenial
Released (3.0.6-1ubuntu0.1~esm1)
Available with Ubuntu Pro
Patches:
upstream: https://github.com/stephane/libmodbus/commit/5ccdf5ef79d742640355d1132fa9e2abc7fbaefc (3.1.5)
upstream: https://github.com/stephane/libmodbus/commit/ca3fcb1c98755e8f44c33a910af4db3c799ee63e (3.1.5)
upstream: https://github.com/stephane/libmodbus/commit/6f915d4215c06be3c719761423d9b5e8aa3cb820 (3.1.5)
upstream: https://github.com/stephane/libmodbus/commit/2b5cb5896120d7564f4c34fdc5aaa4f22a97e45c (3.0.7)
upstream: https://github.com/stephane/libmodbus/commit/64cd092bcc421a70431fe1fb6b7f1e6f491f7cf8 (3.0.8)

Severity score breakdown

Parameter Value
Base score 9.1
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H