Security restrictions bypass in Dell EMC Avamar



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-16395
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 EMC Avamar
Client/Desktop applications / Software for system administration

Vendor Dell

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Security restrictions bypass

EUVDB-ID: #VU15724

Risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-16395

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists in OpenSSL::X509::Name due to the equality check is not correct if the value of an entity of the argument (right-hand side) starts with the value of the receiver (left-hand side). A remote attacker can supply malicious X.509 certificate to be passed and bypass security restrictions to conduct further attacks.

Mitigation

Install update from vendor's website.

Vulnerable software versions

EMC Avamar: 7.2.1 - 18.2

CPE2.3 External links

https://www.dell.com/support/kbdoc/fr-fr/printview/000153517/10/en


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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