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VMSA-2017-0017

VMware vCenter Server update resolves LDAP DoS, SSRF and CRLF injection issues

VMware Security Advisory

VMware Security Advisory Advisory ID:

VMSA-2017-0017

VMware Security Advisory Severity:

Moderate

VMware Security Advisory Synopsis:

VMware vCenter Server update resolves LDAP DoS, SSRF and CRLF injection issues

VMware Security Advisory Issue date:

2017-11-09

VMware Security Advisory Updated on:

2017-11-09 (Initial Advisory)

VMware Security Advisory CVE numbers:

CVE-2017-4927, CVE-2017-4928

1. Summary

VMware vCenter Server update resolves LDAP DoS, SSRF and CRLF injection issues

2. Relevant Products

VMware vCenter Server

3. Problem Description

a. VMware vCenter Server LDAP Denial of Service (DoS).

VMware vCenter Server doesn't correctly handle specially crafted LDAP network packets which may allow for remote DoS.

VMware would like to thank Honggang Ren of Fortinet's FortiGuard Labs for reporting this issue to us.

The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the identifier CVE-2017-4927 to this issue.

Column 5 of the following table lists the action required to remediate the vulnerability in each release, if a solution is available.

VMware Product

Product Version

Running on

Severity

Replace with/ Apply Patch

Workaround

VMware ProductvCenter Server

Product Version6.5

Running on Any

SeverityModerate

Replace with/ Apply Patch6.5 U1

WorkaroundNone

VMware ProductvCenter Server

Product Version6.0

Running on Any

SeverityModerate

Replace with/ Apply Patch6.0 U3c

WorkaroundNone

VMware ProductvCenter Server

Product Version5.5

Running on Any

SeverityN/A

Replace with/ Apply PatchNot affected

WorkaroundN/A

b. SSRF and CRLF injection issues in vSphere Web client

The Flash-based vSphere Web Client (i.e. not the new HTML5-based vSphere Client) contains server side request forgery (SSRF) and CRLF injection issues due to improper neutralization of URLs. An attacker may exploit these issues by sending a POST request with modified headers towards internal services leading to information disclosure.

VMware would like to thank ricterzheng @ Tencent Yunding Lab for reporting this issue to us.

The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the identifier CVE-2017-4928 to this issue.

Column 5 of the following table lists the action required to remediate the vulnerability in each release, if a solution is available.