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CVE-2021-36095— User enumeration issue using "lost password" feature

Quick assessment

Affected
OTRS AG ((OTRS)) Community Edition
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.

OTRS是德国 （OTRS）公司的一个应用软件。一个服务管理软件。 OTRS存在安全漏洞，该漏洞源于开发和实现丢失密码功能时存在问题。恶意攻击者可利用该漏洞能够通过“丢失密码”功能进行有效的用户登录。

CVSS 5.3 · Medium EPSS 0.94% · P58

Possible ATT&CK Techniques 1 AI

T1212 · Exploitation for Credential Access
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I. Basic Information for CVE-2021-36095

Vulnerability Information
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Vulnerability Title
User enumeration issue using "lost password" feature
Source: CVE Program / CVE List V5
Vulnerability Description
Malicious attacker is able to find out valid user logins by using the "lost password" feature. This issue affects: OTRS AG ((OTRS)) Community Edition version 6.0.1 and later versions. OTRS AG OTRS 7.0.x version 7.0.28 and prior versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
OTRS 授权问题漏洞
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存在安全漏洞，该漏洞源于开发和实现丢失密码功能时存在问题。恶意攻击者可利用该漏洞能够通过“丢失密码”功能进行有效的用户登录。
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
OTRS AG ((OTRS)) Community Edition 6.0.1 ~ unspecified -
OTRS AG OTRS 7.0.x ~ 7.0.28 -

II. Public POCs for CVE-2021-36095

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III. Intelligence Information for CVE-2021-36095

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Other References for CVE-2021-36095 (1)

Same Patch Batch · OTRS AG · 2021-09-06 · 4 CVEs total

CVE-2021-36094 5.7 MEDIUM XSS attack in appointment edit popup screen
CVE-2021-36093 5.3 MEDIUM DoS attack using PostMaster filters
CVE-2021-36096 5.2 MEDIUM Support Bundle includes S/Mime and PGP secret or PIN

IV. Related Vulnerabilities

Same product: ((OTRS)) Community Edition
Same vendor: OTRS AG
Same weakness: CWE-200

V. Comments for CVE-2021-36095

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