CVE-2021-25321

arpwatch: Local privilege escalation from runtime user to root

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A UNIX Symbolic Link (Symlink) Following vulnerability in arpwatch of SUSE Linux Enterprise Server 11-SP4-LTSS, SUSE Manager Server 4.0, SUSE OpenStack Cloud Crowbar 9; openSUSE Factory, Leap 15.2 allows local attackers with control of the runtime user to run arpwatch as to escalate to root upon the next restart of arpwatch. This issue affects: SUSE Linux Enterprise Server 11-SP4-LTSS arpwatch versions prior to 2.1a15. SUSE Manager Server 4.0 arpwatch versions prior to 2.1a15. SUSE OpenStack Cloud Crowbar 9 arpwatch versions prior to 2.1a15. openSUSE Factory arpwatch version 2.1a15-169.5 and prior versions. openSUSE Leap 15.2 arpwatch version 2.1a15-lp152.5.5 and prior versions.

Una vulnerabilidad de Seguimiento de Enlaces Simbólicos UNIX (Symlink) en arpwatch de SUSE Linux Enterprise Server 11-SP4-LTSS, SUSE Manager Server versión 4.0, SUSE OpenStack Cloud Crowbar versión 9; openSUSE Factory, Leap versión 15.2, permite a atacantes locales con control del usuario en runtime ejecutar arpwatch como escalar a root en el siguiente reinicio de arpwatch. Este problema afecta a: SUSE Linux Enterprise Server 11-SP4-LTSS arpwatch versiones anteriores a 2.1a15. SUSE Manager Server 4.0 arpwatch versiones anteriores a 2.1a15. SUSE OpenStack Cloud Crowbar 9 versiones arpwatch anteriores a 2.1a15. openSUSE Factory versión arpwatch 2.1a15-169.5 y versiones anteriores. openSUSE Leap 15.2 versión arpwatch 2.1a15-lp152.5.5 y versiones anteriores

An update that fixes one vulnerability is now available. This update for arpwatch fixes the following issues. Fixed local privilege escalation from runtime user to root. This update was imported from the SUSE:SLE-15:Update update project.

*Credits: Johannes Segitz of SUSE

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-01-19 CVE Reserved
2021-06-30 CVE Published
2024-09-16 CVE Updated
2024-09-16 First Exploit
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-61: UNIX Symbolic Link (Symlink) Following

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC
https://bugzilla.suse.com/show_bug.cgi?id=1186240	2024-09-16

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Suse Search vendor "Suse"	Arpwatch Search vendor "Suse" for product "Arpwatch"	< 2.1a15 Search vendor "Suse" for product "Arpwatch" and version " < 2.1a15"	-	Affected	in	Suse Search vendor "Suse"	Manager Server Search vendor "Suse" for product "Manager Server"	4.0 Search vendor "Suse" for product "Manager Server" and version "4.0"	-	Safe
Suse Search vendor "Suse"	Arpwatch Search vendor "Suse" for product "Arpwatch"	< 2.1a15 Search vendor "Suse" for product "Arpwatch" and version " < 2.1a15"	-	Affected	in	Suse Search vendor "Suse"	Openstack Cloud Crowbar Search vendor "Suse" for product "Openstack Cloud Crowbar"	9.0 Search vendor "Suse" for product "Openstack Cloud Crowbar" and version "9.0"	-	Safe
Suse Search vendor "Suse"	Arpwatch Search vendor "Suse" for product "Arpwatch"	< 2.1a15 Search vendor "Suse" for product "Arpwatch" and version " < 2.1a15"	-	Affected	in	Suse Search vendor "Suse"	Linux Enterprise Server Search vendor "Suse" for product "Linux Enterprise Server"	11 Search vendor "Suse" for product "Linux Enterprise Server" and version "11"	sp4, ltss	Safe
Suse Search vendor "Suse"	Arpwatch Search vendor "Suse" for product "Arpwatch"	<= 2.1a15-169.5 Search vendor "Suse" for product "Arpwatch" and version " <= 2.1a15-169.5"	-	Affected	in	Opensuse Search vendor "Opensuse"	Factory Search vendor "Opensuse" for product "Factory"	-	-	Safe
Suse Search vendor "Suse"	Arpwatch Search vendor "Suse" for product "Arpwatch"	<= 2.1a15-lp152.5.5 Search vendor "Suse" for product "Arpwatch" and version " <= 2.1a15-lp152.5.5"	-	Affected	in	Opensuse Search vendor "Opensuse"	Leap Search vendor "Opensuse" for product "Leap"	15.2 Search vendor "Opensuse" for product "Leap" and version "15.2"	-	Safe