CVE-2022-27240 : scheme/webauthn.c in Glewlwyd SSO server 2.x before 2.6.2 has a buffer overflow

scheme/webauthn.c in Glewlwyd SSO server 2.x before 2.6.2 has a buffer overflow associated with a webauthn assertion.

Published 2022-03-18 06:15:09

Updated 2022-03-25 18:11:19

Source MITRE

View at NVD, CVE.org

Vulnerability category: Overflow

Products affected by CVE-2022-27240

Glewlwyd Sso Server Project » Glewlwyd Sso Server
Versions from including (>=) 2.0.0 and before (<) 2.6.2
cpe:2.3:a:glewlwyd_sso_server_project:glewlwyd_sso_server:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.37%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 56 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.5	HIGH	AV:N/AC:L/Au:N/C:P/I:P/A:P	10.0	6.4	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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.

Assigned by: nvd@nist.gov (Primary)

https://github.com/babelouest/glewlwyd/commit/4c5597c155bfbaf6491cf6b83479d241ae66940a

Fix possible buffer overflow · babelouest/glewlwyd@4c5597c · GitHub
Patch;Third Party Advisory
https://github.com/babelouest/glewlwyd/releases/tag/v2.6.2

Release Release 2.6.2 · babelouest/glewlwyd · GitHub
Release Notes;Third Party Advisory

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