Icinga2 up to 2.11.x /run/icinga2/cmd link following

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Icinga2 up to 2.11.x. It has been rated as critical. Impacted is an unknown function of the file /run/icinga2/cmd. This manipulation causes link following. This vulnerability is tracked as CVE-2020-14004. The attack is restricted to local execution. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Icinga2 up to 2.11.x and classified as critical. Affected by this vulnerability is an unknown function of the file /run/icinga2/cmd. The manipulation with an unknown input leads to a link following vulnerability. The CWE definition for the vulnerability is CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in Icinga2 before v2.12.0-rc1. The prepare-dirs script (run as part of the icinga2 systemd service) executes chmod 2750 /run/icinga2/cmd. /run/icinga2 is under control of an unprivileged user by default. If /run/icinga2/cmd is a symlink, then it will by followed and arbitrary files can be changed to mode 2750 by the unprivileged icinga2 user.

The weakness was disclosed 06/12/2020 (oss-sec). It is possible to read the advisory at openwall.com. This vulnerability is known as CVE-2020-14004 since 06/10/2020. Attacking locally is a requirement. The successful exploitation requires a single authentication. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 2.12.0-rc1 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Link following
CWE: CWE-59
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Icinga2 2.12.0-rc1

Timelineinfo

06/10/2020 🔍
06/12/2020 +2 days 🔍
06/13/2020 +1 days 🔍
10/24/2020 +133 days 🔍

Sourcesinfo

Advisory: openwall.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-14004 (🔍)
GCVE (CVE): GCVE-0-2020-14004
GCVE (VulDB): GCVE-100-156667

Entryinfo

Created: 06/13/2020 07:38
Updated: 10/24/2020 12:17
Changes: 06/13/2020 07:38 (38), 06/13/2020 07:43 (17), 10/24/2020 12:17 (1)
Complete: 🔍
Cache ID: 216::103

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