CVE-2019-5601

FreeBSD Security Advisory - FreeBSD-SA-19:10.ufs

Severity Score

6.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In FreeBSD 12.0-STABLE before r347474, 12.0-RELEASE before 12.0-RELEASE-p7, 11.2-STABLE before r347475, and 11.2-RELEASE before 11.2-RELEASE-p11, a bug in the FFS implementation causes up to three bytes of kernel stack memory to be written to disk as uninitialized directory entry padding.

En FreeBSD 12.0-STABLE en versiones anteriores a la r347474, 12.0-RELEASE en versiones anteriores a la 12.0-RELEASE-p7, 11.2-STABLE en versiones anteriores a la r347475, y 11.2-RELEASE en versiones anteriores a la 11.2-RELEASE-p11, un error en la implementación de FFS causa hasta tres bytes de memoria de la pila del kernel para ser escrito en el disco como relleno de entrada de directorio no inicializado.

A bug causes up to three bytes of kernel stack memory to be written to disk as uninitialized directory entry padding. This data can be viewed by any user with read access to the directory. Additionally, a malicious user with write access to a directory can cause up to 254 bytes of kernel stack memory to be exposed. Some amount of the kernel stack is disclosed and written out to the filesystem.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-01-07 CVE Reserved
2019-07-03 CVE Published
2024-08-04 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

CAPEC

References (2)

URL	Tag	Source
http://packetstormsecurity.com/files/153523/FreeBSD-Security-Advisory-FreeBSD-SA-19-10.ufs.html	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:10.ufs.asc	2019-07-15

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Freebsd Search vendor "Freebsd"		Freebsd Search vendor "Freebsd" for product "Freebsd"				11.2 Search vendor "Freebsd" for product "Freebsd" and version "11.2"		-		Affected
Freebsd Search vendor "Freebsd"		Freebsd Search vendor "Freebsd" for product "Freebsd"				11.2 Search vendor "Freebsd" for product "Freebsd" and version "11.2"		p10		Affected
Freebsd Search vendor "Freebsd"		Freebsd Search vendor "Freebsd" for product "Freebsd"				11.2 Search vendor "Freebsd" for product "Freebsd" and version "11.2"		p2		Affected
Freebsd Search vendor "Freebsd"		Freebsd Search vendor "Freebsd" for product "Freebsd"				11.2 Search vendor "Freebsd" for product "Freebsd" and version "11.2"		p3		Affected
Freebsd Search vendor "Freebsd"		Freebsd Search vendor "Freebsd" for product "Freebsd"				11.2 Search vendor "Freebsd" for product "Freebsd" and version "11.2"		p4		Affected
Freebsd Search vendor "Freebsd"		Freebsd Search vendor "Freebsd" for product "Freebsd"				11.2 Search vendor "Freebsd" for product "Freebsd" and version "11.2"		p5		Affected
Freebsd Search vendor "Freebsd"		Freebsd Search vendor "Freebsd" for product "Freebsd"				11.2 Search vendor "Freebsd" for product "Freebsd" and version "11.2"		p6		Affected
Freebsd Search vendor "Freebsd"		Freebsd Search vendor "Freebsd" for product "Freebsd"				11.2 Search vendor "Freebsd" for product "Freebsd" and version "11.2"		p7		Affected
Freebsd Search vendor "Freebsd"		Freebsd Search vendor "Freebsd" for product "Freebsd"				11.2 Search vendor "Freebsd" for product "Freebsd" and version "11.2"		p9		Affected
Freebsd Search vendor "Freebsd"		Freebsd Search vendor "Freebsd" for product "Freebsd"				11.2 Search vendor "Freebsd" for product "Freebsd" and version "11.2"		rc3		Affected
Freebsd Search vendor "Freebsd"		Freebsd Search vendor "Freebsd" for product "Freebsd"				12.0 Search vendor "Freebsd" for product "Freebsd" and version "12.0"		-		Affected
Freebsd Search vendor "Freebsd"		Freebsd Search vendor "Freebsd" for product "Freebsd"				12.0 Search vendor "Freebsd" for product "Freebsd" and version "12.0"		p1		Affected
Freebsd Search vendor "Freebsd"		Freebsd Search vendor "Freebsd" for product "Freebsd"				12.0 Search vendor "Freebsd" for product "Freebsd" and version "12.0"		p2		Affected
Freebsd Search vendor "Freebsd"		Freebsd Search vendor "Freebsd" for product "Freebsd"				12.0 Search vendor "Freebsd" for product "Freebsd" and version "12.0"		p3		Affected
Freebsd Search vendor "Freebsd"		Freebsd Search vendor "Freebsd" for product "Freebsd"				12.0 Search vendor "Freebsd" for product "Freebsd" and version "12.0"		p4		Affected
Freebsd Search vendor "Freebsd"		Freebsd Search vendor "Freebsd" for product "Freebsd"				12.0 Search vendor "Freebsd" for product "Freebsd" and version "12.0"		p5		Affected
Freebsd Search vendor "Freebsd"		Freebsd Search vendor "Freebsd" for product "Freebsd"				12.0 Search vendor "Freebsd" for product "Freebsd" and version "12.0"		p6		Affected