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CVE-2019-10050

Published: 13 May 2019

A buffer over-read issue was discovered in Suricata 4.1.x before 4.1.4. If the input of the decode-mpls.c function DecodeMPLS is composed only of a packet of source address and destination address plus the correct type field and the right number for shim, an attacker can manipulate the control flow, such that the condition to leave the loop is true. After leaving the loop, the network packet has a length of 2 bytes. There is no validation of this length. Later on, the code tries to read at an empty position, leading to a crash.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
suricata
Launchpad, Ubuntu, Debian
bionic Needed

cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Ignored
(end of life)
upstream
Released (1:4.1.4-1)
impish Does not exist

groovy Does not exist

jammy Not vulnerable
(1:4.1.4-1)
lunar Not vulnerable
(1:4.1.4-1)
focal Does not exist

hirsute Does not exist

kinetic Not vulnerable
(1:4.1.4-1)
xenial Needed

mantic Not vulnerable
(1:4.1.4-1)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H