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CVE-2020-11047— Out-of-bounds Read in FreeRDP

Quick assessment

Affected
FreeRDP FreeRDP
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

FreeRDP是FreeRDP团队的一款开源的远程桌面协议（RDP）的实现。 FreeRDP 1.1之后版本（2.0.0版本已修复）中的autodetect_recv_bandwidth_measure_results存在缓冲区错误漏洞。攻击者可通过提供简短的输入并读取测量结果数据利用该漏洞获取客户端内存。

CVSS 5.5 · Medium EPSS 1.71% · P77

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System
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I. Basic Information for CVE-2020-11047

Vulnerability Information
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Vulnerability Title
Out-of-bounds Read in FreeRDP
Source: CVE Program / CVE List V5
Vulnerability Description
In FreeRDP after 1.1 and before 2.0.0, there is an out-of-bounds read in autodetect_recv_bandwidth_measure_results. A malicious server can extract up to 8 bytes of client memory with a manipulated message by providing a short input and reading the measurement result data. This has been patched in 2.0.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
FreeRDP 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreeRDP是FreeRDP团队的一款开源的远程桌面协议（RDP）的实现。 FreeRDP 1.1之后版本（2.0.0版本已修复）中的autodetect_recv_bandwidth_measure_results存在缓冲区错误漏洞。攻击者可通过提供简短的输入并读取测量结果数据利用该漏洞获取客户端内存。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
FreeRDP FreeRDP > 1.1, < 2.0.0 -

II. Public POCs for CVE-2020-11047

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III. Intelligence Information for CVE-2020-11047

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Patches & Fixes for CVE-2020-11047 (1)

Vendor Advisories for CVE-2020-11047 (1)

Mailing List Discussions for CVE-2020-11047 (1)

Other References for CVE-2020-11047 (1)

Same Patch Batch · FreeRDP · 2020-05-07 · 7 CVEs total

CVE-2020-11042 5.5 MEDIUM Out-of-bounds Read in FreeRDP
CVE-2020-11046 5.5 MEDIUM Improper Restriction of Operations within the Bounds of a Memory Buffer in FreeRDP
CVE-2020-11049 5.5 MEDIUM Out-of-bounds Read in FreeRDPrdp_read_share_control_header
CVE-2020-11044 2.2 LOW Double Free in FreeRDP
CVE-2020-11045 2.2 LOW Out-of-bounds Read in FreeRDP
CVE-2020-11048 2.2 LOW Out-of-bounds Read in FreeRDPrdp_read_flow_control_pdu

IV. Related Vulnerabilities

Same product: FreeRDP
Same vendor: FreeRDP
Same weakness: CWE-125

V. Comments for CVE-2020-11047

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