FreeRDP up to 2.1.0 ntlm_message.c ntlm_read_ChallengeMessage out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in FreeRDP up to 2.1.0. Affected by this issue is the function ntlm_read_ChallengeMessage in the library winpr/libwinpr/sspi/NTLM/ntlm_message.c. This manipulation causes out-of-bounds. This vulnerability appears as CVE-2020-13396. The attack requires local access. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in FreeRDP up to 2.1.0. It has been declared as problematic. Affected by this vulnerability is the function ntlm_read_ChallengeMessage in the library winpr/libwinpr/sspi/NTLM/ntlm_message.c. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality. The summary by CVE is:

An issue was discovered in FreeRDP before 2.1.1. An out-of-bounds (OOB) read vulnerability has been detected in ntlm_read_ChallengeMessage in winpr/libwinpr/sspi/NTLM/ntlm_message.c.

The weakness was presented 05/22/2020. This vulnerability is known as CVE-2020-13396 since 05/22/2020. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 236628 (Alibaba Cloud Linux 3 : 0002: freerdp (ALINUX3-SA-2022:0002)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.1.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (236628). See VDB-155565 and VDB-155564 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
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: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 236628
Nessus Name: Alibaba Cloud Linux 3 : 0002: freerdp (ALINUX3-SA-2022:0002)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: FreeRDP 2.1.1

Timelineinfo

05/22/2020 🔍
05/22/2020 +0 days 🔍
05/23/2020 +1 days 🔍
05/19/2025 +1822 days 🔍

Sourcesinfo

Status: Confirmed

CVE: CVE-2020-13396 (🔍)
GCVE (CVE): GCVE-0-2020-13396
GCVE (VulDB): GCVE-100-155563
See also: 🔍

Entryinfo

Created: 05/23/2020 10:50
Updated: 05/19/2025 21:25
Changes: 05/23/2020 10:50 (38), 05/23/2020 10:55 (17), 05/19/2025 21:25 (21)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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