VDB-195432 · CVE-2022-27240 · GCVE-0-2022-27240

Glewlwyd SSO Server up to 2.6.1 WebAuthn scheme/webauthn.c buffer overflow

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.
5.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Glewlwyd SSO Server up to 2.6.1. It has been declared as critical. The affected element is an unknown function of the file scheme/webauthn.c of the component WebAuthn. The manipulation results in buffer overflow. This vulnerability is reported as CVE-2022-27240. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Glewlwyd SSO Server up to 2.6.1. It has been classified as critical. Affected is some unknown processing of the file scheme/webauthn.c of the component WebAuthn. The manipulation with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was disclosed 03/18/2022 as 4c5597c155bfbaf6491cf6b83479d241ae66940a. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2022-27240 since 03/18/2022. There are known technical details, but no exploit is available.

Upgrading to version 2.6.2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 4c5597c155bfbaf6491cf6b83479d241ae66940a is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Glewlwyd

Name

SSO Server

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

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

CVSSv2info

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

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

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: SSO Server 2.6.2
Patch: 4c5597c155bfbaf6491cf6b83479d241ae66940a

Timelineinfo

03/18/2022 🔍
03/18/2022 +0 days 🔍
03/18/2022 +0 days 🔍
03/20/2022 +2 days 🔍

Sourcesinfo

Advisory: 4c5597c155bfbaf6491cf6b83479d241ae66940a
Status: Confirmed

CVE: CVE-2022-27240 (🔍)
GCVE (CVE): GCVE-0-2022-27240
GCVE (VulDB): GCVE-100-195432

Entryinfo

Created: 03/18/2022 11:35
Updated: 03/20/2022 14:31
Changes: 03/18/2022 11:35 (44), 03/20/2022 14:31 (1)
Complete: 🔍
Cache ID: 216::103