avtoexperts.ru Improper Access Control vulnerability

2019-10-2917:11:00

geeknik

www.openbugbounty.org

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Security Researcher geeknik Helped patch 8635 vulnerabilities
Received 8 Coordinated Disclosure badges
Received 20 recommendations , a holder of 8 badges for responsible and coordinated disclosure, found a security vulnerability affectingavtoexperts.ru website and its users.

Following coordinated and responsible vulnerability disclosure guidelines of the ISO 29147 standard, Open Bug Bounty has:

&nbsp&nbsp&nbsp&nbsp&nbsp&nbspa. verified the vulnerability and confirmed its existence;
&nbsp&nbsp&nbsp&nbsp&nbsp&nbspb. notified the website operator about its existence.

Affected Website:	avtoexperts.ru
Open Bug Bounty Program:	Create your bounty program now. It’s open and free.
Vulnerable Application:	Custom Code
Vulnerability Type:	IAC (Improper Access Control) / CWE-284
CVSSv3 Score:	6.5 [CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N]
Disclosure Standard:	Coordinated Disclosure based on ISO 29147 guidelines
Discovered and Reported by:	**geeknik Helped patch 8635 vulnerabilities
Received 8 Coordinated Disclosure badges
Received 20 recommendations **
Remediation Guide:	OWASP Access Control Cheat Sheet
Export Vulnerability Data:	Bugzilla Vulnerability Data
JIRA Vulnerability Data [ Configuration ]
Mantis Vulnerability Data
Splunk Vulnerability Data
XML Vulnerability Data [ XSD ]

Vulnerable URL:

![](data:image/png;base64, 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)

Research’s Comment:

![](data:image/png;base64, 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)

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Coordinated Disclosure Timeline

Vulnerability Reported:	29 October, 2019 17:11 GMT
Vulnerability Verified:	30 October, 2019 11:42 GMT
Website Operator Notified:	30 October, 2019 11:42 GMT
a. Using the ISO 29147 guidelines
—	—
b. Using publicly available security contacts
c. Using Open Bug Bounty notification framework
d. Using security contacts provided by the researcher
Public Report Published
[without any technical details]:	30 October, 2019 11:42 GMT
Public Disclosure: A security researcher can delete the report before public disclosure, afterwards the report cannot be deleted or modified anymore. The researcher can also postpone public disclosure date as long as reasonably required to remediate the vulnerability.	27 January, 2020 17:11 GMT
—	—

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