VDB-152341 · CVE-2020-5281 · GCVE-0-2020-5281

Perun up to 3.9.0 Group Manager ldap injection

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.
5.8	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Perun up to 3.9.0. It has been rated as critical. This affects an unknown part of the component Group Manager. This manipulation causes ldap injection. This vulnerability is handled as CVE-2020-5281. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Perun up to 3.9.0. It has been declared as critical. Affected by this vulnerability is an unknown function of the component Group Manager. The manipulation with an unknown input leads to a ldap injection vulnerability. The CWE definition for the vulnerability is CWE-90. The product constructs all or part of an LDAP query using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended LDAP query when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In Perun before version 3.9.1, VO or group manager can modify configuration of the LDAP extSource to retrieve all from Perun LDAP. Issue is fixed in version 3.9.1 by sanitisation of the input.

The weakness was released 03/25/2020 (GitHub Repository). The advisory is shared at github.com. This vulnerability is known as CVE-2020-5281 since 01/02/2020. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation needs additional levels of successful authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1505 for this issue.

Upgrading to version 3.9.1 eliminates this vulnerability.

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Productinfo

Name

Perun

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.8
VulDB Meta Temp Score: 5.8

VulDB Base Score: 5.1
VulDB Temp Score: 4.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.2
NVD Vector: 🔍

CNA Base Score: 6.2
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Ldap injection
CWE: CWE-90 / CWE-74 / CWE-707
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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Perun 3.9.1
Patch: github.com

Timelineinfo

01/02/2020 🔍
03/25/2020 +83 days 🔍
03/26/2020 +1 days 🔍
05/11/2025 +1872 days 🔍

Sourcesinfo

Advisory: ac527bc3225a64208ee5cee59e5918ee360ca039
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-5281 (🔍)
GCVE (CVE): GCVE-0-2020-5281
GCVE (VulDB): GCVE-100-152341

Entryinfo

Created: 03/26/2020 07:58
Updated: 05/11/2025 17:35
Changes: 03/26/2020 07:58 (38), 03/26/2020 08:03 (11), 10/05/2020 07:46 (1), 05/11/2024 16:44 (18), 05/11/2024 16:51 (20), 05/11/2025 17:35 (7)
Complete: 🔍
Cache ID: 216::103