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CVE-2023-26434

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 App Suite存在安全漏洞，该漏洞源于添加外部邮件帐户时，POP3功能响应的处理不限制合理大小，有可能会触发过度使用资源并最终导致服务不可用的请求。

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-2023-26434

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 POP3 "capabilities" responses are not limited to plausible sizes. Attacker with access to a rogue POP3 service could trigger requests that lead to excessive resource usage and eventually service unavailability. We now limit accepted POP3 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 App Suite 安全漏洞
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 App Suite存在安全漏洞，该漏洞源于添加外部邮件帐户时，POP3功能响应的处理不限制合理大小，有可能会触发过度使用资源并最终导致服务不可用的请求。
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-2023-26434

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III. Intelligence Information for CVE-2023-26434

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Exploits & Public PoCs for CVE-2023-26434 (1)

Mailing List Discussions for CVE-2023-26434 (1)

Other References for CVE-2023-26434 (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-2023-26433 4.3 MEDIUM Open-Xchange OX App Suite 安全漏洞
CVE-2023-26432 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-2023-26434

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