McAfee Security Bulletin: glibc vulnerabilities CVE-2015-5229 and CVE-2015-7547
Security Bulletins ID:
SB10150
Last Modified: 2/5/2020
Last Modified: 2/5/2020
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) |
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| CVE Information | ||||
| CVE Numbers: | Severity Rating | CVSS v3 Base Score | CVSS v2 Base Score | Affected Products |
| CVE-2015-7547 | High | 8.1 | 6.8 |
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| CVE-2015-7547 | Critical | 10.0 / 9.5 | 7.9 / 7.9 |
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| CVE-2015-7547 | Medium | 6.5 | 6.1 |
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| CVE-2015-5229 | Low | 4.1 / 3.7 | 3.7 / 3.2 |
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| CVE-2015-5229 | Low | 3.7 | 2.6 |
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| 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 |
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| Security Bulletin Replacement: | None | |||
| Affected Software: | See the McAfee Product Vulnerability Status lists below | |||
| Location of Updated Software: | http://www.mcafee.com/us/downloads/downloads.aspx | |||
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Article contents:
- Vulnerability Description
- McAfee Product Vulnerability Status
- Remediation
- Product Specific Notes
- Workaround
- McAfee Mitigations
- Acknowledgements
- Frequently Asked Questions (FAQs)
- Resources
- Disclaimer
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
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
According to a Google security blog post (https://googleonlinesecurity.blogspot.com/2016/02/cve-2015-7547-glibc-getaddrinfo-stack.html):
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-7547
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
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
Weakness Variant
http://cwe.mitre.org/data/definitions/121.html
Investigation into all 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
- Advanced Threat Defense (ATD)
- McAfee Active Response (MAR)
- McAfee Asset Manager (MAM)
- McAfee MOVE AntiVirus Security Virtual Appliance (MOVE SVA)
- McAfee MOVE AntiVirus Security Virtual Appliance Manager (MOVE SVA Manager)
- SaaS Email Archiving (SaaS Archiving)
- SaaS Email Protection and Continuity (SaaS Email)
- Threat Intelligence Exchange (TIE)
- True Key
- VirusScan Enterprise Linux (VSEL)
- Data Exchange Layer (DXL) Framework
- McAfee Email Gateway (MEG)
- Network Data Loss Prevention (NDLP)
- Public Cloud Security (PCS)
Database Activity Monitoring (DAM) GTI Cloud Server GTI Rest Server McAfee MOVE Firewall (MOVE Firewall) McAfee Web Gateway (MWG)
Not Vulnerable
- Capture Service (CS)
- Content Security Reporter (CSR)
- Database Vulnerability Manager (DVM)
- Data Loss Prevention Endpoint (DLPe) / Host Data Loss Prevention (HDLP)
- Endpoint Encryption for PCs (EEPC) / McAfee Drive Encryption (MDE) / Drive Encryption (DE) / Endpoint Encryption Manager (EEM/SafeBoot)
- Endpoint Protection for Mac (EPM)
- Endpoint Security for Mac/ENSM
- Endpoint Solutions Platform (ESP)
- Enterprise Mobility Manager (EMM)
- Email and Web Security (EWS)
- ePO Deep Command (eDC)
- ePolicy Orchestrator (ePO) / ePO Cloud (TPS)
- 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)
- Management for Optimized Virtual Environments (MOVE) AntiVirus
- McAfee Agent (MA)
- McAfee Application Control (MCC) (See Product Specific Notes)
- McAfee Endpoint Security 10 (ENS)
- McAfee Firewall for Linux
- McAfee Policy Auditor (PA)
- McAfee Quarantine Manager (MQM)
- McAfee Security for Email Servers (MSES)
- McAfee Security for Lotus Domino (MSLD) / Domino Windows (MSDW)
- McAfee Security for Microsoft Exchange (MSME)
- McAfee Security for Microsoft SharePoint (MSMS)
- McAfee Security for Mac (MSM)
- McAfee Security Information and Event Management (SIEM)
- Network Security Manager (NSM)
- Network Security Platform (NSP) Sensor [I, M, and NS-Series]
- Network Threat Behavior Analysis (NTBA)
- McAfee Web Reporter (MWR)
- Vulnerability Manager (MVM)
- Rogue System Detection (RSD)
- SaaS Endpoint Protection (SEP)
- SiteAdvisor Enterprise (SAE) MAC
- SiteAdvisor Enterprise (SAE) Windows
- Total Protection Service Client (ToPS)
- VirusScan Enterprise for Storage (VSES)
- WebAdvisor Consumer
- Whole Disk Encryption (WDE)
- Windows System Security Suite (MTP/MIS/AVP)
No Vulnerabilities Reported
- SaaS Account Management (SAM)
- SaaS Web Protection (SaaS Web)
For a description of each product, see: http://www.mcafee.com/us/apps/products-az.aspx.
Remediation
| 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 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.
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.
McAfee Vulnerability Manager has signatures to help mitigate these vulnerabilities. These include:
- MVM – McAfee Vulnerability Manager
FSL vulnerability checks- http://www.mcafee.com/us/content-release-notes/foundstone/index.aspx
- http://www.mcafee.com/us/resources/release-notes/foundstone/fsl_02_18_2016.pdf
- 85863 - CentOS 6, 7 CESA-2015-0092 Update Is Not Installed
Download the latest content for each and enable the checks if they are not enabled by default.
Acknowledgements
These vulnerabilities were first disclosed by Google and RedHat:
https://rhn.redhat.com/errata/RHSA-2016-0176.html
https://googleonlinesecurity.blogspot.com/2016/02/cve-2015-7547-glibc-getaddrinfo-stack.html
https://rhn.redhat.com/errata/RHSA-2016-0176.html
https://googleonlinesecurity.blogspot.com/2016/02/cve-2015-7547-glibc-getaddrinfo-stack.html
Frequently Asked Questions (FAQs)
How do I know whether my McAfee product is vulnerable or not?
For Endpoint products:
Use the following instructions for endpoint or client based products:
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: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, McAfee 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:
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:
For Endpoint products:
Use the following instructions for endpoint or client based products:
- Right-click on the McAfee tray shield icon on the Windows task bar.
- Select Open Console.
- In the console, select Action Menu.
- In the Action Menu, select Product Details. The product version is displayed.
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:
- Open the Administrator's User Interface (UI).
- Click the About link. The product version is displayed.
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, McAfee 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
| 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
| 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 a McAfee 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
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