VDB-178772 · CVE-2021-32739 · Nessus 211508

Icinga up to 2.11.9/2.12.4 API access control

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Icinga up to 2.11.9/2.12.4. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component API. Such manipulation leads to access control. This vulnerability is uniquely identified as CVE-2021-32739. The attack can be launched remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Icinga up to 2.11.9/2.12.4 and classified as critical. Affected by this issue is some unknown processing of the component API. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality.

The weakness was disclosed 07/16/2021. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2021-32739. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability scanner Nessus provides a plugin with the ID 211508 (Debian dla-3953 : icinga2 - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.11.10 or 2.12.5 eliminates this vulnerability. The upgrade is hosted for download at icinga.com.

The vulnerability is also documented in the vulnerability database at Tenable (211508). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Icinga

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 8.8
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 211508
Nessus Name: Debian dla-3953 : icinga2 - security update

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Icinga 2.11.10/2.12.5

Timelineinfo

05/12/2021 🔍
07/16/2021 +65 days 🔍
07/16/2021 +0 days 🔍
11/04/2025 +1572 days 🔍

Sourcesinfo

Advisory: github.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-32739 (🔍)
GCVE (CVE): GCVE-0-2021-32739
GCVE (VulDB): GCVE-100-178772

Entryinfo

Created: 07/16/2021 10:57
Updated: 11/04/2025 05:42
Changes: 07/16/2021 10:57 (38), 07/19/2021 13:19 (3), 07/19/2021 13:25 (1), 11/18/2024 17:31 (16), 11/04/2025 05:42 (28)
Complete: 🔍
Cache ID: 216::103