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CVE-2020-11038— Integer Overflow to Buffer Overflow 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 2.0.0及之前版本中存在安全漏洞。目前尚无此漏洞的相关信息，请随时关注CNNVD或厂商公告。

CVSS 6.9 · Medium EPSS 1.35% · P69
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I. Basic Information for CVE-2020-11038

Vulnerability Information
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Vulnerability Title
Integer Overflow to Buffer Overflow in FreeRDP
Source: CVE Program / CVE List V5
Vulnerability Description
In FreeRDP less than or equal to 2.0.0, an Integer Overflow to Buffer Overflow exists. When using /video redirection, a manipulated server can instruct the client to allocate a buffer with a smaller size than requested due to an integer overflow in size calculation. With later messages, the server can manipulate the client to write data out of bound to the previously allocated buffer. This has been patched in 2.1.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出导致缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
FreeRDP 输入验证错误漏洞
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 2.0.0及之前版本中存在安全漏洞。目前尚无此漏洞的相关信息，请随时关注CNNVD或厂商公告。
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 <= 2.0.0 -

II. Public POCs for CVE-2020-11038

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III. Intelligence Information for CVE-2020-11038

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Vendor Advisories for CVE-2020-11038 (1)

Mailing List Discussions for CVE-2020-11038 (2)

Same Patch Batch · FreeRDP · 2020-05-29 · 13 CVEs total

CVE-2020-11039 8.0 HIGH Integer Overflow in FreeRDP
CVE-2020-11017 6.5 MEDIUM Double free in cliprdr_server_receive_capabilities in FreeRDP
CVE-2020-11018 6.5 MEDIUM Out of bound read in cliprdr_server_receive_capabilities in FreeRDP
CVE-2020-11019 4.3 MEDIUM Out of bound read in update_recv in FreeRDP
CVE-2020-11089 3.7 LOW Out-of-bound read in FreeRDP
CVE-2020-11086 3.1 LOW Out-of-bounds Read in FreeRDP `ntlm_read_ntlm_v2_response`
CVE-2020-11087 3.1 LOW Out-of-bounds Read in FreeRDP
CVE-2020-11088 3.1 LOW Out-of-bound read in FreeRDP
CVE-2020-11085 2.6 LOW Out-of-bounds Read in FreeRDP
CVE-2020-11040 2.2 LOW Out-of-bounds Read in FreeRDP
CVE-2020-11041 2.2 LOW Improper Validation of Array Index in FreeRDP
CVE-2020-11043 2.2 LOW Out-of-bounds Read in FreeRDP

IV. Related Vulnerabilities

Same product: FreeRDP
Same vendor: FreeRDP
Same weakness: CWE-680

V. Comments for CVE-2020-11038

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