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I. Basic Information for CVE-2021-21439
Vulnerability Information

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Vulnerability Title
Possible DoS attack using a special crafted URL in email body
Source: NVD (National Vulnerability Database)
Vulnerability Description
DoS attack can be performed when an email contains specially designed URL in the body. It can lead to the high CPU usage and cause low quality of service, or in extreme case bring the system to a halt. This issue affects: OTRS AG ((OTRS)) Community Edition 6.0.x version 6.0.1 and later versions. OTRS AG OTRS 7.0.x version 7.0.26 and prior versions; 8.0.x version 8.0.13 and prior versions.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
对因果或异常条件的不恰当检查
Source: NVD (National Vulnerability Database)
Vulnerability Title
OTRS AG OTRS 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OTRS是德国 (OTRS)公司的一个应用软件。一个服务管理软件。 OTRS AG OTRS 中存在输入验证错误漏洞,该漏洞源于系统未对输入的数据进行正确的验证。攻击者在电子邮件的正文中放置专门设计的URL可导致高CPU使用率和低服务质量,或者在极端情况下导致系统停止。以下产品及型号受到影响:OTRS AG ((OTRS)) Community Edition 6.0。X 版本 6.0.1及以上版本。Otrs ag Otrs 7.0。X版本7.0.26和以前的版本;8.0。X版本8.0.13和以前的版本。
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
VendorProductAffected VersionsCPESubscribe
OTRS AG((OTRS)) Community Edition 6.0.1 ~ 6.0.x* -
OTRS AGOTRS 7.0.x ~ 7.0.26 -
II. Public POCs for CVE-2021-21439
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III. Intelligence Information for CVE-2021-21439
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IV. Related Vulnerabilities
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