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CVE-2021-25321

arpwatch: Local privilege escalation from runtime user to root

HIGH
7.8
CVSS Score
Published: June 30, 2021 at 08:25 AM UTC
Updated: June 17, 2026 at 03:41 AM UTC
6 products affected across 2 vendorsArpwatchLeapLinux Enterprise Server

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Severity
HIGH7.8
Exploit prediction
EPSS 0.4%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Arpwatch· SUSE
95%
v ≤ 2.1a15-169.5v ≤ 2.1a15-lp152.5.5v < 2.1a15
Affected range stops below 2.1a15, so it looks safe — our inference, not a vendor statement
opensuse-factory (environment) · opensuse-leap (environment) · suse-linux-enterprise-server (environment) · suse-manager-server (environment) · suse-openstack-cloud-crowbar (environment)
Factory· openSUSE
60%
arpwatch ≤ v ≤ 2.1a15-169.5arpwatch
Leap· openSUSEdrupal
60%
arpwatch ≤ v ≤ 2.1a15-lp152.5.5arpwatch
Linux Enterprise Server· SUSE
60%
arpwatch ≤ v < 2.1a15arpwatch
Affected range stops below 2.1a15, so it looks safe — our inference, not a vendor statement
Manager Server· SUSE
60%
arpwatch ≤ v < 2.1a15arpwatch
Affected range stops below 2.1a15, so it looks safe — our inference, not a vendor statement
Openstack Cloud Crowbar· SUSE
60%
arpwatch ≤ v < 2.1a15arpwatch
Affected range stops below 2.1a15, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_CONFIRMExploitIssue TrackingVendor Advisory
Source: [email protected]
https://bugzilla.suse.com/show_bug.cgi?id=1186240

CVSS

7.8HIGHsuse
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-61NVD-CWE-Other

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