Glewlwyd SSO Server up to 2.7.5 webauthn Registration scheme/webauthn.c buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Glewlwyd SSO Server up to 2.7.5. Affected by this issue is some unknown functionality of the file scheme/webauthn.c of the component webauthn Registration. Performing a manipulation results in buffer overflow. This vulnerability was named CVE-2023-49208. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Glewlwyd SSO Server up to 2.7.5. It has been classified as critical. This affects an unknown functionality of the file scheme/webauthn.c of the component webauthn Registration. 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 summary by CVE is:

scheme/webauthn.c in Glewlwyd SSO server before 2.7.6 has a possible buffer overflow during FIDO2 credentials validation in webauthn registration.

The weakness was presented 11/23/2023 as f9d8c06aae8dfe17e761b18b577ff169e059e812. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2023-49208 since 11/23/2023. Technical details are known, but no exploit is available.

Upgrading to version 2.7.6 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch f9d8c06aae8dfe17e761b18b577ff169e059e812 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.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-53212). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.6

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

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: Yes

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: SSO Server 2.7.6
Patch: f9d8c06aae8dfe17e761b18b577ff169e059e812

Timelineinfo

11/23/2023 🔍
11/23/2023 +0 days 🔍
11/23/2023 +0 days 🔍
06/05/2025 +560 days 🔍

Sourcesinfo

Advisory: f9d8c06aae8dfe17e761b18b577ff169e059e812
Status: Confirmed

CVE: CVE-2023-49208 (🔍)
GCVE (CVE): GCVE-0-2023-49208
GCVE (VulDB): GCVE-100-246093
EUVD: 🔍

Entryinfo

Created: 11/23/2023 21:59
Updated: 06/05/2025 18:12
Changes: 11/23/2023 21:59 (45), 12/16/2023 13:08 (11), 06/05/2025 18:02 (16), 06/05/2025 18:12 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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