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AUSCERT External Security Bulletin Redistribution
ESB-2017.2875
VMSA-2017-0017 VMware vCenter Server update resolves LDAP
DoS, SSRF and CRLF injection issues
13 November 2017
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AusCERT Security Bulletin Summary
---------------------------------
Product: VMware vCenter Server
Publisher: VMWare
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
VMware ESX Server
Impact/Access: Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2017-4929 CVE-2017-4928 CVE-2017-4927
Original Bulletin:
https://www.vmware.com/security/advisories/VMSA-2017-0017.html
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VMSA-2017-0017
VMware vCenter Server update resolves LDAP DoS, SSRF and CRLF injection issues
VMware Security Advisory
Advisory ID:
VMSA-2017-0017
Severity:
Moderate
Synopsis:
VMware vCenter Server update resolves LDAP DoS, SSRF and CRLF injection issues
Issue date:
2017-11-09
Updated on:
2017-11-09 (Initial 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
vCenter Server 6.5 Any Moderate 6.5 U1 None
vCenter Server 6.0 Any Moderate 6.0 U3c None
vCenter Server 5.5 Any N/A Not affected N/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.
VMware Product Product Version Running on Severity Replace with/ Apply Patch Workaround
vCenter Server 6.5 Any N/A Not affected N/A
vCenter Server 6.0 Any Moderate 6.0 U3c None
vCenter Server 5.5 Any Moderate 5.5 U3f None
4. Solution
Please review the patch/release notes for your product and version and verify
the checksum of your downloaded file.
VMware vCenter Server 6.5 U1
Downloads:
https://my.vmware.com/web/vmware/details?downloadGroup=VC65U1&productId=614&rPId=17343
Documentation:
https://docs.vmware.com/en/VMware-vSphere/index.html
VMware vCenter Server 6.0 U3c
Downloads:
https://my.vmware.com/web/vmware/details?productId=491&downloadGroup=VC60U3
Documentation:
https://docs.vmware.com/en/VMware-vSphere/index.html
VMware vCenter Server 5.5 U3f
Downloads:
https://my.vmware.com/web/vmware/details?productId=353&downloadGroup=VC55U3F
Documentation:
https://docs.vmware.com/en/VMware-vSphere/index.html
5. References
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-4927
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-4928
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-4929
6. Change log
2017-11-09 VMSA-2017-0017
Initial security advisory in conjunction with the release of vCenter Server 6.0
U3c on 2017-11-09.
7. Contact
E-mail list for product security notifications and announcements:
http://lists.vmware.com/cgi-bin/mailman/listinfo/security-announce
This Security Advisory is posted to the following lists:
security-announce@lists.vmware.com
bugtraq@securityfocus.com
fulldisclosure@seclists.org
E-mail: security@vmware.com
PGP key at: https://kb.vmware.com/kb/1055
VMware Security Advisories
http://www.vmware.com/security/advisories
Consolidated list of VMware Security Advisories
http://kb.vmware.com/kb/2078735
VMware Security Response Policy
https://www.vmware.com/support/policies/security_response.html
VMware Lifecycle Support Phases
https://www.vmware.com/support/policies/lifecycle.html
VMware Security & Compliance Blog
https://blogs.vmware.com/security
Twitter
https://twitter.com/VMwareSRC
Copyright 2017 VMware Inc. All rights reserved.
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