Multiple vulnerabilities in VMware vCenter Server



Published: 2017-11-10
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2017-4927
CVE-2017-4928
CWE-ID CWE-20
CWE-918
Exploitation vector Network
Public exploit N/A
Vulnerable software
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vCenter Server
Server applications / Virtualization software

Vendor VMware, Inc

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Denial of service

EUVDB-ID: #VU9170

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-4927

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to insufficient validation of user-supplied input. A remote attacker can send specially crafted LDAP packets and cause the service to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation

Update to version 6.0 U3c, 6.5 U1.

Vulnerable software versions

vCenter Server: 6.0.0 - 6.5.0

External links

http://www.vmware.com/security/advisories/ID:%20VMSA-2017-0017.html
http://fortiguard.com/zeroday/1824


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.

2) Information disclosure

EUVDB-ID: #VU9171

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-4928

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The weakness exists due to insufficient validation of user-supplied input. A remote attacker can send specially crafted POST requests via the Flash-based vSphere Web Client to trigger a URL validation flaw and conduct server side request forgery (SSRF) and carriage return line feed (CRLF) injection attacks to gain access to arbitrary data.

Mitigation

Update to version 5.5 U3f, 6.0 U3c.

Vulnerable software versions

vCenter Server: 5.5.0 - 6.0.0

External links

http://www.vmware.com/security/advisories/ID:%20VMSA-2017-0017.html


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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