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CVE-2023-43826— Apache Guacamole: Integer overflow in handling of VNC image buffers

Quick assessment

Affected
Apache Software Foundation Apache Guacamole
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.

Apache Guacamole是美国阿帕奇（Apache）基金会的一款无客户端的远程桌面网关。该产品支持VNC、RDP和SSH等协议。 Apache Guacamole 1.5.3 及之前版本存在输入验证错误漏洞，该漏洞源于如果用户连接到恶意或受损的 VNC 服务器，特制数据可能会导致内存损坏，并导致以正在运行的 guacd 进程的权限执行任意代码。

EPSS 0.89% · P59

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2023-43826

Vulnerability Information
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Vulnerability Title
Apache Guacamole: Integer overflow in handling of VNC image buffers
Source: CVE Program / CVE List V5
Vulnerability Description
Apache Guacamole 1.5.3 and older do not consistently ensure that values received from a VNC server will not result in integer overflow. If a user connects to a malicious or compromised VNC server, specially-crafted data could result in memory corruption, possibly allowing arbitrary code to be executed with the privileges of the running guacd process. Users are recommended to upgrade to version 1.5.4, which fixes this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Guacamole 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Guacamole是美国阿帕奇（Apache）基金会的一款无客户端的远程桌面网关。该产品支持VNC、RDP和SSH等协议。 Apache Guacamole 1.5.3 及之前版本存在输入验证错误漏洞，该漏洞源于如果用户连接到恶意或受损的 VNC 服务器，特制数据可能会导致内存损坏，并导致以正在运行的 guacd 进程的权限执行任意代码。
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
Apache Software Foundation Apache Guacamole 0 ~ 1.5.3 -

II. Public POCs for CVE-2023-43826

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III. Intelligence Information for CVE-2023-43826

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Mailing List Discussions for CVE-2023-43826 (1)

Same Patch Batch · Apache Software Foundation · 2023-12-19 · 4 CVEs total

CVE-2023-49734 7.7 HIGH Apache Superset: Privilege Escalation Vulnerability
CVE-2023-49736 6.5 MEDIUM Apache Superset: SQL Injection on where_in JINJA macro
CVE-2023-46104 6.5 MEDIUM Apache Superset: Allows for uncontrolled resource consumption via a ZIP bomb

IV. Related Vulnerabilities

Same product: Apache Guacamole
Same vendor: Apache Software Foundation
Same weakness: CWE-190

V. Comments for CVE-2023-43826

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