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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 number: CVE-2017-4927, CVE-2017-4928
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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 Running Replace with/ Mitigation
Product Version on Severity 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 Running Replace with/ Mitigation
Product Version on Severity 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=VC55U3
F
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
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6. Change log
2017-11-09 VMSA-2017-0017
Initial security advisory in conjunction with the release of VMware
vCenter Server 6.0 U3c on 2017-11-09.
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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:
[email protected]
[email protected]
[email protected]
E-mail: [email protected]
PGP key at: https://kb.vmware.com/kb/1055
VMware Security Advisories
http://www.vmware.com/security/advisories
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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