OSU Open Source Lab VNCAuthProxy up to 1.1.1 VNCServerAuthenticator vncap/vnc/protocol.py improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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8.9$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in OSU Open Source Lab VNCAuthProxy up to 1.1.1. The affected element is an unknown function of the file vncap/vnc/protocol.py of the component VNCServerAuthenticator. Executing a manipulation can lead to improper authentication. This vulnerability appears as CVE-2022-36436. The attack may be performed from remote. There is no available exploit. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability has been found in OSU Open Source Lab VNCAuthProxy up to 1.1.1 (Firewall Software) and classified as critical. This vulnerability affects some unknown functionality of the file vncap/vnc/protocol.py of the component VNCServerAuthenticator. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

OSU Open Source Lab VNCAuthProxy through 1.1.1 is affected by an vncap/vnc/protocol.py VNCServerAuthenticator authentication-bypass vulnerability that could allow a malicious actor to gain unauthorized access to a VNC session or to disconnect a legitimate user from a VNC session. A remote attacker with network access to the proxy server could leverage this vulnerability to connect to VNC servers protected by the proxy server without providing any authentication credentials. Exploitation of this issue requires that the proxy server is currently accepting connections for the target VNC server.

The weakness was presented 09/14/2022. The advisory is shared for download at cert.grnet.gr. This vulnerability was named CVE-2022-36436 since 07/25/2022. There are known technical details, but no exploit is available.

Applying the patch edc149af29242178091b2d6fcd42c3ef0851644b is able to eliminate this problem. The bugfix is ready for download at github.com.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.0
VulDB Meta Temp Score: 8.9

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 9.8
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: edc149af29242178091b2d6fcd42c3ef0851644b

Timelineinfo

07/25/2022 🔍
09/14/2022 +51 days 🔍
09/14/2022 +0 days 🔍
08/01/2024 +687 days 🔍

Sourcesinfo

Advisory: edc149af29242178091b2d6fcd42c3ef0851644b
Status: Confirmed

CVE: CVE-2022-36436 (🔍)
GCVE (CVE): GCVE-0-2022-36436
GCVE (VulDB): GCVE-100-208588

Entryinfo

Created: 09/14/2022 14:21
Updated: 08/01/2024 18:44
Changes: 09/14/2022 14:21 (43), 10/17/2022 12:02 (1), 10/17/2022 12:09 (11), 08/01/2024 18:44 (27)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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