VDB-171531 · CVE-2021-28963 · GCVE-0-2021-28963

Shibboleth Service Provider up to 3.2.0 Template controlled 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.
5.2	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Shibboleth Service Provider up to 3.2.0 and classified as critical. This affects an unknown function of the component Template Handler. Performing a manipulation of the argument controlled results in injection. This vulnerability is identified as CVE-2021-28963. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical has been found in Shibboleth Service Provider up to 3.2.0. This affects an unknown part of the component Template Handler. The manipulation of the argument controlled with an unknown input leads to a injection vulnerability. CWE is classifying the issue as CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 03/22/2021. It is possible to read the advisory at issues.shibboleth.net. This vulnerability is uniquely identified as CVE-2021-28963. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1055 according to MITRE ATT&CK.

Upgrading to version 3.2.1 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.shibboleth.net. The best possible mitigation is suggested to be upgrading to the latest version.

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

Productinfo

Vendor

Shibboleth

Name

Service Provider

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Injection
CWE: CWE-74 / CWE-707 / CWE-20
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: Service Provider 3.2.1
Patch: git.shibboleth.net

Timelineinfo

03/22/2021 🔍
03/22/2021 +0 days 🔍
03/22/2021 +0 days 🔍
04/03/2021 +12 days 🔍

Sourcesinfo

Advisory: issues.shibboleth.net
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-28963 (🔍)
GCVE (CVE): GCVE-0-2021-28963
GCVE (VulDB): GCVE-100-171531

Entryinfo

Created: 03/22/2021 18:23
Updated: 04/03/2021 15:23
Changes: 03/22/2021 18:23 (41), 04/03/2021 15:18 (5), 04/03/2021 15:23 (18)
Complete: 🔍
Cache ID: 216::103