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CVE-2023-26432

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 OX App Suite是德国Open-Xchange公司的一个电子邮件及生产力套件客户端软件。 Open-Xchange OX App Suite OXAS-BACKEND存在安全漏洞，该漏洞源于添加外部邮件帐户时，SMTP功能响应处理不限制合理的大小，攻击者利用该漏洞可能会触发导致过度使用资源并最终导致服务不可用。

CVSS 4.3 · Medium EPSS 1.15% · P66

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2023-26432

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
When adding an external mail account, processing of SMTP "capabilities" responses are not limited to plausible sizes. Attacker with access to a rogue SMTP service could trigger requests that lead to excessive resource usage and eventually service unavailability. We now limit accepted SMTP server response to reasonable length/size. 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:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Open-Xchange OX App Suite 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Open-Xchange OX App Suite是德国Open-Xchange公司的一个电子邮件及生产力套件客户端软件。 Open-Xchange OX App Suite OXAS-BACKEND存在安全漏洞，该漏洞源于添加外部邮件帐户时，SMTP功能响应处理不限制合理的大小，攻击者利用该漏洞可能会触发导致过度使用资源并最终导致服务不可用。
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-rev39 -

II. Public POCs for CVE-2023-26432

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III. Intelligence Information for CVE-2023-26432

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Exploits & Public PoCs for CVE-2023-26432 (1)

Mailing List Discussions for CVE-2023-26432 (1)

Other References for CVE-2023-26432 (3)

Same Patch Batch · OX Software GmbH · 2023-06-20 · 9 CVEs total

CVE-2023-26436 7.1 HIGH Open-Xchange AppSuite 代码问题漏洞
CVE-2023-26428 6.5 MEDIUM Open-Xchange OX App Suite 安全漏洞
CVE-2023-26435 5.0 MEDIUM Open-Xchange App Suite 代码问题漏洞
CVE-2023-26431 5.0 MEDIUM Open-Xchange OX App Suite 代码问题漏洞
CVE-2023-26434 4.3 MEDIUM Open-Xchange App Suite 安全漏洞
CVE-2023-26433 4.3 MEDIUM Open-Xchange OX App Suite 安全漏洞
CVE-2023-26429 3.5 LOW Open-Xchange OX App Suite 命令注入漏洞
CVE-2023-26427 3.2 LOW Open-Xchange OX App Suite 安全漏洞

IV. Related Vulnerabilities

Same product: OX App Suite
Same vendor: OX Software GmbH
Same weakness: CWE-400

V. Comments for CVE-2023-26432

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