LibVNCServer up to 0.9.12 libvncclient/rfbproto.c allocation of resources

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.4$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in LibVNCServer up to 0.9.12. This affects an unknown function of the file libvncclient/rfbproto.c. Executing a manipulation can lead to allocation of resources. This vulnerability appears as CVE-2020-14405. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in LibVNCServer up to 0.9.12. It has been declared as critical. This vulnerability affects an unknown code block of the file libvncclient/rfbproto.c. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in LibVNCServer before 0.9.13. libvncclient/rfbproto.c does not limit TextChat size.

The weakness was presented 06/17/2020. This vulnerability was named CVE-2020-14405 since 06/17/2020. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 0.9.13 eliminates this vulnerability.

See VDB-156867, VDB-156866, VDB-156865 and VDB-156864 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
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: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
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: LibVNCServer 0.9.13

Timelineinfo

06/17/2020 🔍
06/17/2020 +0 days 🔍
06/18/2020 +1 days 🔍
06/18/2020 +0 days 🔍

Sourcesinfo

Status: Not defined

CVE: CVE-2020-14405 (🔍)
GCVE (CVE): GCVE-0-2020-14405
GCVE (VulDB): GCVE-100-156868
See also: 🔍

Entryinfo

Created: 06/18/2020 09:23
Updated: 06/18/2020 09:28
Changes: 06/18/2020 09:23 (37), 06/18/2020 09:28 (17)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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