National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-5023 Detail

Current Description

An exploitable vulnerability exists in the grsecurity PaX patch for the function read_kmem, in PaX from version pax-linux-4.9.8-test1 to 4.9.24-test7, grsecurity official from version grsecurity-3.1-4.9.8-201702060653 to grsecurity-3.1-4.9.24-201704252333, grsecurity unofficial from version v4.9.25-unofficialgrsec to v4.9.74-unofficialgrsec. PaX adds a temp buffer to the read_kmem function, which is never freed when an invalid address is supplied. This results in a memory leakage that can lead to a crash of the system. An attacker needs to induce a read to /dev/kmem using an invalid address to exploit this vulnerability.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 5.9 MEDIUM
Vector:  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0784 Exploit Third Party Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-772 Missing Release of Resource after Effective Lifetime NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:gresecurity:gresecurity:*:*:*:*:official:*:*:*
     Show Matching CPE(s)
From (including)
3.1-4.9.8-201702060653
Up to (including)
3.1-4.9.24-201704252333
 cpe:2.3:a:gresecurity:gresecurity:*:*:*:*:unofficial:*:*:*
     Show Matching CPE(s)
From (including)
4.9.25
Up to (including)
4.9.74
 cpe:2.3:a:gresecurity:pax:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
pax-linux-4.9.8-test1
Up to (including)
pax-linux-4.9.8-test7


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-5023
NVD Published Date:
10/31/2019
NVD Last Modified:
11/06/2019