FreeRDP 2.0.0-beta1+android11 license_recv Packet input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in FreeRDP 2.0.0-beta1+android11. Affected by this issue is the function license_recv. Executing a manipulation as part of Packet can lead to input validation. This vulnerability is tracked as CVE-2017-2839. The attack can be launched remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in FreeRDP 2.0.0-beta1+android11. It has been declared as problematic. This vulnerability affects the function license_recv. The manipulation as part of a Packet leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect availability. CVE summarizes:

An exploitable denial of service vulnerability exists within the handling of challenge packets in FreeRDP 2.0.0-beta1+android11. A specially crafted challenge packet can cause the program termination leading to a denial of service condition. An attacker can compromise the server or use man in the middle to trigger this vulnerability.

The bug was discovered 07/24/2017. The weakness was disclosed 04/24/2018 by Tyler Bohan with Cisco Talos (Website). The advisory is shared for download at securityfocus.com. This vulnerability was named CVE-2017-2839 since 12/01/2016. 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 vulnerability was handled as a non-public zero-day exploit for at least 40 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 102945 (openSUSE Security Update : freerdp (openSUSE-2017-992)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176103 (Debian Security Update for freerdp (DSA 3923-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (102945) and SecurityFocus (BID 99942†). The entries VDB-117047, VDB-117048, VDB-117049 and VDB-117050 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector (Talos): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
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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Nessus ID: 102945
Nessus Name: openSUSE Security Update : freerdp (openSUSE-2017-992)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for remmina FEDORA-2017-ed31e1f941
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/01/2016 🔍
07/24/2017 +235 days 🔍
07/25/2017 +1 days 🔍
09/02/2017 +39 days 🔍
09/05/2017 +3 days 🔍
04/24/2018 +230 days 🔍
04/24/2018 +0 days 🔍
04/25/2018 +1 days 🔍
03/07/2023 +1777 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Researcher: Tyler Bohan
Organization: Cisco Talos
Status: Not defined

CVE: CVE-2017-2839 (🔍)
GCVE (CVE): GCVE-0-2017-2839
GCVE (VulDB): GCVE-100-117052

OVAL: 🔍

SecurityFocus: 99942 - FreeRDP Multiple Denial of Service and Remote Code Execution Vulnerabilities

See also: 🔍

Entryinfo

Created: 04/25/2018 10:23
Updated: 03/07/2023 11:59
Changes: 04/25/2018 10:23 (75), 04/16/2020 12:23 (5), 03/07/2023 11:59 (14)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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