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CVE-2023-26438

Quick assessment

Affected
OX Software GmbH OX App Suite
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.

Open-Xchange AppSuite是德国Open-Xchange公司的一套Web云桌面环境。该环境允许用户更直观的管理电子邮件、任务和文件等。 Open-Xchange AppSuite存在安全漏洞，该漏洞源于存在先检查后使用（TOCTOU）漏洞，允许攻击者注入能够绕过现有网络拒绝列表的配置。

CVSS 4.3 · Medium EPSS 0.60% · P46
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I. Basic Information for CVE-2023-26438

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
External service lookups for a number of protocols were vulnerable to a time-of-check/time-of-use (TOCTOU) weakness, involving the JDK DNS cache. Attackers that were timing DNS cache expiry correctly were able to inject configuration that would bypass existing network deny-lists. Attackers could exploit this weakness to discover the existence of restricted network infrastructure and service availability. Improvements were made to include deny-lists not only during the check of the provided connection data, but also during use. No publicly available exploits are known.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Open-Xchange AppSuite 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Open-Xchange AppSuite是德国Open-Xchange公司的一套Web云桌面环境。该环境允许用户更直观的管理电子邮件、任务和文件等。 Open-Xchange AppSuite存在安全漏洞，该漏洞源于存在先检查后使用（TOCTOU）漏洞，允许攻击者注入能够绕过现有网络拒绝列表的配置。
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
OX Software GmbH OX App Suite 0 ~ 7.10.6-rev42 -

II. Public POCs for CVE-2023-26438

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III. Intelligence Information for CVE-2023-26438

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Exploits & Public PoCs for CVE-2023-26438 (1)

Mailing List Discussions for CVE-2023-26438 (1)

Other References for CVE-2023-26438 (3)

Same Patch Batch · OX Software GmbH · 2023-08-02 · 14 CVEs total

CVE-2023-26439 7.6 HIGH Open-Xchange AppSuite SQL注入漏洞
CVE-2023-26451 7.5 HIGH Open-Xchange AppSuite 安全特征问题漏洞
CVE-2023-26440 7.1 HIGH Open-Xchange AppSuite SQL注入漏洞
CVE-2023-26441 5.7 MEDIUM Open-Xchange AppSuite 路径遍历漏洞
CVE-2023-26443 5.5 MEDIUM Open-Xchange AppSuite SQL注入漏洞
CVE-2023-26450 5.4 MEDIUM Open-Xchange AppSuite 跨站脚本漏洞
CVE-2023-26449 5.4 MEDIUM Open-Xchange AppSuite 跨站脚本漏洞
CVE-2023-26448 5.4 MEDIUM Open-Xchange AppSuite 跨站脚本漏洞
CVE-2023-26447 5.4 MEDIUM Open-Xchange AppSuite 跨站脚本漏洞
CVE-2023-26446 5.4 MEDIUM Open-Xchange AppSuite 跨站脚本漏洞
CVE-2023-26445 5.4 MEDIUM Open-Xchange AppSuite 跨站脚本漏洞
CVE-2023-26430 3.5 LOW Open-Xchange AppSuite 命令注入漏洞
CVE-2023-26442 3.2 LOW Open-Xchange AppSuite 代码问题漏洞

IV. Related Vulnerabilities

Same product: OX App Suite
Same vendor: OX Software GmbH
Same weakness: CWE-918

V. Comments for CVE-2023-26438

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