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Intel Security - Security Bulletin: glibc vulnerabilities CVE-2015-5229 and CVE-2015-7547
Security Bulletins ID:   SB10150
Last Modified:  8/10/2016

Summary

First Published: 2/18/2016
 
 Impact of Vulnerability:  Stack-based Buffer Overflow (CWE-121)
 Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119)
CVE Information
CVE Numbers: Severity Rating CVSS v3 Base Score CVSS v2 Base Score Affected Products
 CVE-2015-7547  High  8.1 6.8
  1. McAfee MOVE AntiVirus Security Virtual Appliance (MOVE SVA)
  2. McAfee MOVE AntiVirus Security Virtual Appliance Manager (MOVE SVA Manager)
  3. SaaS Email Archiving (SaaS Archiving)
  4. SaaS Email Protection and Continuity (SaaS Email)
  5. Public Cloud Security (PCS)
  6. Threat Intelligence Exchange Server (TIE)
  7. True Key
  8. VirusScan Enterprise Linux (VSEL) 
 CVE-2015-7547  Critical  10.0 / 9.5  7.9 / 7.9
  1. Data Exchange Layer (DXL) Framework
  2. McAfee Active Response (MAR)
 CVE-2015-7547  Medium  6.5  6.1
  1. Database Activity Monitoring (DAM)
  2. McAfee Change Control (MCC)
  3. McAfee Email Gateway (MEG)
  4. McAfee MOVE Firewall (MOVE Firewall)
  5. McAfee Web Gateway (MWG)
 CVE-2015-5229  Low  4.1 / 3.7  3.7 / 3.2
  1. Data Exchange Layer (DXL) Framework
  2. McAfee Active Response (MAR)
 CVE-2015-5229  Low  3.7  2.6
  1. Advanced Threat Defense (ATD)
  2. Database Activity Monitoring (DAM)
  3. GTI Cloud Server
  4. GTI Rest Server McAfee
  5. McAfee Email Gateway (MEG)
  Highest Base CVSS v3 Score:  10.0
 Highest Base CVSS v2 Score:  7.9
 Recommendations:  Deploy applicable remediation signatures/rules first.   
 Deploy product updates as they are made available.   
 Implement the Google recommended mitigations: https://googleonlinesecurity.blogspot.com/2016/02/cve-2015-7547-glibc-getaddrinfo-stack.html
 Security Bulletin Replacement:  None   
 Affected Software:  See the Intel Security Product Vulnerability Status lists below
 Location of Updated Software:  http://www.mcafee.com/us/downloads/downloads.aspx

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Article contents:

Description

CVE-2015-7547: glibc getaddrinfo stack-based buffer overflow
 
"The glibc DNS client side resolver is vulnerable to a stack-based buffer overflow when the getaddrinfo() library function is used. Software using this function may be exploited with attacker-controlled domain names, attacker-controlled DNS servers, or through a man-in-the-middle attack."

http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-7547
 
CVE-2015-5229: glibc: calloc may return non-zero memory
Memory areas are returning non-zero bytes. This could result in erratic behavior of applications.
https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-5229
 
CERT/CC Vulnerability Note VU# 457759
glibc vulnerable to stack buffer overflow in DNS resolver
http://www.kb.cert.org/vuls/id/457759

CWE-119
Buffer Errors
http://cwe.mitre.org/data/definitions/119.html
 
CWE-121
Weakness Variant
http://cwe.mitre.org/data/definitions/121.html
 
Intel Security Product Vulnerability Status

Investigation into all Intel Security / McAfee products is ongoing. This security bulletin will be updated as additional information is available. Not every version of the "Vulnerable and Updated" products are vulnerable. See the Product Specific Notes section below for details. Products not on these lists or on the "No Vulnerabilities Reported" list are being investigated.
 
Vulnerable and Updated
  1. Advanced Threat Defense (ATD)
  2. McAfee Active Response (MAR)
  3. McAfee Asset Manager (MAM)
  4. McAfee MOVE AntiVirus Security Virtual Appliance (MOVE SVA)
  5. McAfee MOVE AntiVirus Security Virtual Appliance Manager (MOVE SVA Manager)
  6. SaaS Email Archiving (SaaS Archiving)
  7. SaaS Email Protection and Continuity (SaaS Email)
  8. Threat Intelligence Exchange (TIE)
  9. True Key
  10. VirusScan Enterprise Linux (VSEL)
Vulnerable and Not Yet Updated
  1. Data Exchange Layer (DXL) Framework
  2. McAfee Email Gateway (MEG)
  3. Network Data Loss Prevention (NDLP)
  4. Public Cloud Security (PCS)
Vulnerable but Low Risk
  1. Database Activity Monitoring (DAM)
  2. GTI Cloud Server
  3. GTI Rest Server
  4. McAfee MOVE Firewall (MOVE Firewall)
  5. McAfee Web Gateway (MWG)
Not Vulnerable
  1. Capture Service (CS)
  2. Content Security Reporter (CSR)
  3. Database Vulnerability Manager (DVM)
  4. Data Loss Prevention Endpoint (DLPe) / Host Data Loss Prevention (HDLP)
  5. Endpoint Encryption for PCs (EEPC) / McAfee Drive Encryption (MDE) / Drive Encryption (DE) / Endpoint Encryption Manager (EEM/SafeBoot)
  6. Endpoint Protection for Mac (EPM)
  7. Endpoint Security for Mac/ENSM
  8. Endpoint Solutions Platform (ESP)
  9. Enterprise Mobility Manager (EMM)
  10. Email and Web Security (EWS)
  11. ePO Deep Command (eDC)
  12. ePolicy Orchestrator (ePO) / ePO Cloud (TPS)
  13. File and Removable Media Protection (FRP) / Endpoint Encryption for Files and Folders (EEFF) / Endpoint Encryption for Removable Media – USB (EERM)Host Intrusion Prevention System (HIPS) (Windows)
  14. Management for Optimized Virtual Environments (MOVE) AntiVirus
  15. McAfee Agent (MA)
  16. McAfee Application Control (MCC) (See Product Specific Notes)
  17. McAfee Endpoint Security 10 (ENS)
  18. McAfee Firewall for Linux
  19. McAfee Policy Auditor (PA)
  20. McAfee Quarantine Manager (MQM)
  21. McAfee Security for Email Servers (MSES)
  22. McAfee Security for Lotus Domino (MSLD) / Domino Windows (MSDW)
  23. McAfee Security for Microsoft Exchange (MSME)
  24. McAfee Security for Microsoft SharePoint (MSMS)
  25. McAfee Security for Mac (MSM)
  26. McAfee Security Information and Event Management (SIEM)
  27. Network Security Manager (NSM)
  28. Network Security Platform (NSP) Sensor [I, M, and NS-Series]
  29. Network Threat Behavior Analysis (NTBA)
  30. McAfee Web Reporter (MWR)
  31. Vulnerability Manager (MVM)
  32. Rogue System Detection (RSD)
  33. SaaS Endpoint Protection (SEP)
  34. SiteAdvisor Enterprise (SAE) MAC
  35. SiteAdvisor Enterprise (SAE) Windows
  36. Total Protection Service Client (ToPS)
  37. VirusScan Enterprise for Storage (VSES)
  38. WebAdvisor Consumer
  39. Whole Disk Encryption (WDE)
  40. Windows System Security Suite (MTP/MIS/AVP)
No Vulnerabilities Reported
  1. SaaS Account Management (SAM)
  2. SaaS Web Protection (SaaS Web)
For a description of each product, see: http://www.mcafee.com/us/apps/products-az.aspx.

Remediation

Go to the Product Downloads site and download the applicable product patch/hotfix files:
 
Product Type Version File Name Release Date
Advanced Threat Defense (ATD) Hotfix 3.4.8.193 February 29, 2016
DXL 2.2 Patch 2.2 March 17, 2016
DXL 2.0.1 Hotfix    Hotfix 2 (2.0.1.164) DXLPlatform_2.0.1_Build_164_Package_1_(ENU_LICENSED_RELEASE_BRANCH).zip February 25, 2016
MAM 6.6 Hotfix Hotfix 7 mam_hotfix_pack7.sh June 23, 2015
McAfee Active Response (MAR) Hotfix
Iso
1.1.0.169 MARPlatform-1.1.0-169.zip
MAR-1.1.0.0-169.x86_64.iso
March 16, 2016
McAfee MOVE AntiVirus Security Virtual Appliance (MOVE SVA) Cloud Update N/A N/A
McAfee MOVE AntiVirus Security Virtual Appliance Manager (MOVE SVA Manager) Cloud Update N/A N/A
SaaS Email Archiving (SaaS Archiving) Cloud Update N/A N/A February 25, 2016
SaaS Email Protection and Continuity (SaaS Email) Cloud Update N/A N/A February 25, 2016
TIE 1.2.1 Hotfix Hotfix 1 N/A February 23, 2016
True Key Cloud Update N/A N/A February 17, 2016
VirusScan Enterprise Linux (VSEL) Minor release 2.0.3 McAfeeVSEForLinux-2.0.3.29216.zip June 29,2016

Download and Installation Instructions
See KB56057 for instructions on how to download Intel Security / McAfee products, documentation, security updates, patches, and hotfixes.  Review the Release Notes and the Installation Guide, which you can download from the Documentation tab, for instructions on how to install these updates.

Product Specific Notes

  • Database Activity Monitoring (DAM)
    See KB86682 for related information.
     
  • DXL
    Product Exposures:
    The only vulnerable DXL component is the DXL Broker Platform. A hotfix will be released to address the vulnerability on the DXL Broker Platform.

    This hotfix updates glibc on the DXL Broker Platform to a glibc hotfix removing the vulnerability.

    Broker Platforms earlier than DXL 2.0.1 should be updated to DXL 2.0.1 to apply this hotfix.
     
    DXL Broker Version CVE-2015-7547
    1.1.0 Vulnerable
    2.0 Vulnerable
    2.0.1 Hotfixes
  •  
  • MAC
    McAfee Application Control does not use the getaddrinfo() function in the manner that is the trigger of the vulnerable code execution. The vulnerable code applies when DNS is involved, but MAC does not query/listen for anything outside the native components.
     
  • TIE
    The hotfix released applies only to TIE Server 1.2.1 and replaces the current GNU C library with the version that resolves CVE-2015-7547.
     
    For earlier versions of TIE, see KB86633 for details about updating the GNU C Library without upgrading the TIE Server version.
     
  • MWG
    See KB86608 - Web Gateway response to CVE-2015-7547.

Workaround

None.

Mitigations

The vulnerability can be mitigated by the following steps as provided by Google:
 
"Google has found some mitigations that may help prevent exploitation if you are not able to immediately patch your instance of glibc. The vulnerability relies on an oversized (2048+ bytes) UDP or TCP response, which is followed by another response that will overwrite the stack. Our suggested mitigation is to limit the response (using DNSMasq or similar programs) sizes accepted by the DNS resolver locally as well as to ensure that DNS queries are sent only to DNS servers that limit the response size for UDP responses with the truncation bit set."
 
Vulnerability detection signatures for McAfee Vulnerability Manager (MVM) are updated frequently. These Foundstone Scripting Language (FSL) vulnerability checks can be found at: http://www.mcafee.com/us/content-release-notes/foundstone/index.aspx.
 
Intel Security McAfee Vulnerability Manager has signatures to help mitigate these vulnerabilities. These include:
Download the latest content for each and enable the checks if they are not enabled by default.

Frequently Asked Questions (FAQs)

How do I know whether my Intel Security product is vulnerable or not?

For Endpoint products:
Use the following instructions for endpoint or client based products:
  1. Right-click on the McAfee tray shield icon on the Windows task bar.
  2. Select Open Console.
  3. In the console, select Action Menu.
  4. In the Action Menu, select Product Details. The product version is displayed.
For ePO:
Check the version and build of ePO that is installed. For information on how to check the version, see KB52634.

For Appliances:
Use the following instructions for Appliance based products:
  1. Open the Administrator's User Interface (UI).
  2. Click the About link. The product version is displayed.
What is CVSS?
CVSS, or Common Vulnerability Scoring System, is the result of the National Infrastructure Advisory Council’s effort to standardize a system of assessing the criticality of a vulnerability. This system offers an unbiased criticality score between 0 and 10 that customers can use to judge how critical a vulnerability is and plan accordingly. For more information, please visit the CVSS website at: http://www.first.org/cvss/.

When calculating CVSS v2 scores, Intel Security has adopted a philosophy that fosters consistency and repeatability. Our guiding principle for CVSS scoring is to score the exploit under consideration by itself. We consider only the immediate and direct impact of the exploit under consideration. We do not factor into a score any potential follow-on exploits that might be made possible by successful exploitation of the issue being scored.

CVSS v3 scoring is in final review as of December 2015. CVSS v2 will be replaced with CVSS v3 when v3 is fully approved. Security bulletins will have scores for both versions for at least 6 months after v3 is fully approved.
https://www.first.org/cvss/v3/development
https://www.first.org/cvss/calculator/3.0
 
What are the CVSS scoring metrics that have been used?
 
CVE-2015-7547: glibc getaddrinfo stack-based buffer overflow
 
CVSS v3 Scoring:
 
 Base Score 6.5
 Attack Vector (AV) Network (N)
 Attack Complexity (AC) High (H)
 Privileges Required (PR) None (N)
 User Interaction (UI) None (N)
 Scope (S) Unchanged (U)
Confidentiality (C) None (N)
Integrity (I) High (H)
Availability (A) Low (L)

NOTE: The below CVSS version 3.0 vector was used to generate this score.
https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L

CVSS v2.0 Scoring:
 
 Base Score 6.1
 Related exploit range (AccessVector) Network (N)
 Attack complexity (AccessComplexity) High (H)
 Level of authentication needed (Authentication) None (N)
 Confidentiality impact None (N)
 Integrity impact Complete (C)
 Availability impact Partial (P)

NOTE: The below CVSS version 2.0 vector was used to generate this score.
https://nvd.nist.gov/cvss.cfm?calculator&version=2&vector=%20(AV:N/AC:H/Au:N/C:N/I:C/A:P)%20%20
 
CVE-2015-5229: glibc getaddrinfo stack-based buffer overflow 
 
CVSS v3 Scoring:
 
 Base Score 3.7
 Attack Vector (AV) Network (N)
 Attack Complexity (AC) High (H)
 Privileges Required (PR) None (N)
 User Interaction (UI) None (N)
 Scope (S) Unchanged (U)
Confidentiality (C) None (N)
Integrity (I) High (H)
Availability (A) Low (L)

NOTE: The below CVSS version 3.0 vector was used to generate this score.
https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS v2.0 Scoring:
 
 Base Score 2.6
 Related exploit range (AccessVector) Network (N)
 Attack complexity (AccessComplexity) High (H)
 Level of authentication needed (Authentication) None (N)
 Confidentiality impact None (N)
 Integrity impact None (N)
 Availability impact Partial (P)

NOTE: The below CVSS version 2.0 vector was used to generate this score.
https://nvd.nist.gov/cvss.cfm?calculator&version=2&vector=(AV:N/AC:H/Au:N/C:N/I:N/A:P)

Where can I find a list of all security bulletins or how do I report a product vulnerability?
To find a list of all security bulletins, or if you have information about a security issue or vulnerability with an Intel Security product, please visit our product security website at: http://www.mcafee.com/us/threat-center/product-security-bulletins.aspx.

Resources

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Disclaimer

The information provided in this security bulletin is provided as is without warranty of any kind. Intel Security disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Intel Security or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits, or special damages, even if Intel Security or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
 
Any future product release dates mentioned in this security bulletin are intended to outline our general product direction and they should not be relied on in making a purchasing decision. The product release dates are for information purposes only, and may not be incorporated into any contract. The product release dates are not a commitment, promise, or legal obligation to deliver any material, code, or functionality. The development, release, and timing of any features or functionality described for our products remains at our sole discretion and may be changed or cancelled at any time.

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