cri-o /etc/passwd os.ReadFile denial of service

CVSS Meta Temp Score
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CTI Interest Score
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4.5$0-$5k0.36

Summaryinfo

A vulnerability identified as problematic has been detected in cri-o. Affected is the function os.ReadFile of the file /etc/passwd. This manipulation causes denial of service. This vulnerability is handled as CVE-2025-4437. There is not any exploit available.

Detailsinfo

A vulnerability was found in cri-o (affected version not known). It has been declared as problematic. Affected by this vulnerability is the function os.ReadFile of the file /etc/passwd. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

There's a vulnerability in the CRI-O application where when container is launched with securityContext.runAsUser specifying a non-existent user, CRI-O attempts to create the user, reading the container's entire /etc/passwd file into memory. If this file is excessively large, it can cause the a high memory consumption leading applications to be killed due to out-of-memory. As a result a denial-of-service can be achieved, possibly disrupting other pods and services running in the same host.

It is possible to read the advisory at bugzilla.redhat.com. This vulnerability is known as CVE-2025-4437 since 05/08/2025. Technical details of the vulnerability are known, but there is no available exploit.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.6
VulDB Meta Temp Score: 4.5

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 5.7
CNA Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/08/2025 🔍
06/27/2025 +50 days 🔍
06/27/2025 +0 days 🔍
08/22/2026 +420 days 🔍

Sourcesinfo

Advisory: bugzilla.redhat.com
Status: Not defined

CVE: CVE-2025-4437 (🔍)
GCVE (CVE): GCVE-0-2025-4437
GCVE (VulDB): GCVE-100-314071

Entryinfo

Created: 06/27/2025 07:06
Updated: 08/22/2026 00:30
Changes: 06/27/2025 07:06 (50), 08/22/2026 00:30 (16)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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