Author Archives: Praveen Singh

New VMware Security Advisory VMSA-2017-0009

Today VMware has released the following new security advisory:

“VMSA-2017-0009 – VMware Workstation update addresses multiple security issues”

This documents an important severity insecure library loading issue via ALSA sound driver configuration files (CVE-2017-4915) and a moderate severity NULL pointer dereference issue (CVE-2017-4916) affecting Workstation Pro/Player.

All VMware Workstation Pro/Player 12.x are affected.

Successful exploitation of the insecure library loading issue may allow unprivileged host users to escalate their privileges to root in a Linux host machine.

The NULL pointer dereference vulnerability exists in the vstor2 driver and may allow host users with normal user privileges to trigger a denial-of-service in a Windows host machine.

Workstation Pro/Player 12.5.6 fixes all these issues.

VMware would like to thank Jann Horn of Google Project Zero and Borja Merino for reporting these issues to us.

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Customers should review the security advisories and direct any questions to VMware Support.

New VMware Security Advisory VMSA-2017-0008.2

Update 04/21/2017: Updated security advisory to clarify the Unified Access Gateway and Horizon View affected versions.

Update 04/19/2017: We have corrected the Horizon View Client for Windows version.

Today VMware has released the following new security advisory:

VMSA-2017-0008.2 – VMware Unified Access Gateway, Horizon View and Workstation updates resolve multiple security vulnerabilities

This documents several critical memory corruption vulnerabilities affecting VMware Unified Access Gateway (formerly called Access Point) (8.2.x, 2.7.x and 2.5.x), Horizon View (7.x, 6.x),  and Horizon View Client for Windows (4.x) and Workstation (12.5.x).

Issue (a) is a heap-based buffer overflow vulnerability (CVE-2017-4907) which affects VMware Unified Access Gateway and Horizon View. This issue may be exploited remotely to execute code on the security gateway. VMware Unified Access Gateway 2.9 is not affected. This issue has been addressed in VMware Unified Access Gateway 2.8.1, Horizon View 7.1.0 and 6.2.4.

Issues (b), (c) and (d) are heap-based buffer-overflow, out-of-bounds read/write and integer-overflow vulnerabilities (CVE-2017-4908, CVE-2017-4909, CVE-2017-4910, CVE-2017-4911, CVE-2017-4912, CVE-2017-4913) in JPEG2000 and TrueType Font (TTF) parsers in the TPView.dll. These issues exist due the use of vulnerable Cortado ThinPrint component and impact VMware Horizon View Client for Windows and Workstation. Exploitation is possible only if virtual printing has been enabled. This feature is not enabled by default on Workstation but it is enabled by default on Horizon View. These issues have been addressed in VMware Workstation 12.5.3 and  Horizon View Client for Windows 4.4.0.

We would like to thank Claudio Moletta (redr2e), and Ke Liu of Tencent’s Xuanwu Lab,  Gogil and Giwan Go of STEALIEN working with ZDI for reporting these issues to us.

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New VMware Security Advisory VMSA-2017-0007

On Tuesday, 4th of April 2017 a remote code-execution issue in the BlazeDS library (CVE-2017-5641) was disclosed in a US-CERT security advisory. We have reviewed the issue and determined that VMware vCenter Server 6.5 and 6.0 are affected due to the use of BlazeDS to process AMF3 messages. VMware vCenter Server 5.5 is not affected.

We have released the following new security advisory which documents the fixes for VMware vCenter Server 6.5 and 6.0 along with the workarounds:

VMSA-2017-0007– VMware vCenter Server update resolves a remote code execution vulnerability via BlazeDS

Successful exploitation of this issue may allow an attacker to execute arbitrary code when deserializing an untrusted Java object. The issue is present in the Customer Experience Improvement Program (CEIP) opt-in UI. The vulnerability will still be present even if a customer has opted out of CEIP. Resolution of this vulnerability requires applying the fixes or the workarounds. We have also investigated this issue against the other VMware products. VMware products which are not listed in the security advisory are not affected.

We would like to thank Markus Wulftange of Code White GmbH for reporting this issue to us.

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New VMware Security Advisory VMSA-2017-0005

Today VMware has released the following new security advisory:

VMSA-2017-0005 – VMware Workstation and Fusion updates address out-of-bounds memory access vulnerability

The advisory documents a critical severity out-of-bounds memory access vulnerability (CVE-2017-4901). Exploitation of the issue may allow a guest to execute code on the operating system that runs Workstation or Fusion. ESXi is not affected.

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New VMware Security Advisory VMSA-2017-0002

Greetings from the VMware Security Response Center !

Today VMware has released the following new security advisory:

“VMSA-2017-0002 – Horizon DaaS update addresses an insecure data validation issue”

The advisory documents a moderate severity insecure data validation issue (CVE-2017-4897) in VMware Horizon DaaS. All 6.1.x versions are affected.

This vulnerability can be exploited by tricking DaaS client users into connecting to a malicious server and sharing all their drives and devices. Horizon DaaS 7.0.0 carries a fix for this issue.

VMware would like to thank Ahmad Ashraff of Aura Information Security for reporting this issue to us.

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New VMware Security Advisory VMSA-2016-0017

Today VMware has released the following new security advisory:

“VMSA-2016-0017 – VMware product updates address multiple information disclosure issues”

This addresses multiple information disclosure issues (CVE-2016-5328) in VMware Tools (versions 9.x and 10.x) running on Mac OS X VMs and (CVE-2016-5329) in VMware Fusion (versions 8.x).

Successful exploitation of these issues may allow a privileged local user on a system where System Integrity Protection (SIP) is enabled, to obtain kernel memory addresses to bypass the kASLR protection mechanism. SIP is default enabled in the latest versions of Mac OS X.

VMware would like to thank Marco Grassi (@marcograss) of KeenLab (@keen_lab), Tencent for reporting these issues to us.

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New VMware Security Advisory VMSA-2016-0010

Today VMware has released the following new security advisory:

VMSA-2016-0010 – VMware product updates address multiple important security issues

This addresses a DLL hijacking issue in Windows-based VMware Tools “Shared Folders” (HGFS) feature (CVE-2016-5330) and an HTTP Header injection issue in vCenter Server and ESXi (CVE-2016-5331).

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New VMware Security Advisories VMSA-2016-0007 and VMSA-2016-0008

Today VMware has released the following new security advisories:

VMSA-2016-0007 – VMware NSX and vCNS product updates address a critical information disclosure vulnerability.
VMSA-2016-0008 – VMware vRealize Log Insight addresses important and moderate security issues.

Information disclosure issue (CVE-2016-2079) may allow a remote attacker to gain access to sensitive information on VMware NSX and vCNS with SSL-VPN enabled. By exploiting the stored cross-site scripting issue (CVE-2016-2081) and cross-site request forgery issue (CVE-2016-2082) in VMware vRealize Log Insight, an attacker can hijack an authenticated user’s session and also may replace trusted content in the Log Insight UI without the user’s authorization.

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