McAfee Virex Library file privilege escalation
| mcafee-virex-library-privilege-escalation (32729) |  High Risk |
Description:
McAfee Virex could allow a local attacker to gain elevated privileges on the system. The Library/Application/Sypport/Virex/VShieldExecute.txt file was created with insecure permissions. A local authenticated attacker could exploit this vulnerability by creating a symbolic link from the /Library/Application Support/Virex/VShieldExclude.txt file to the /var/cron/tabs/root file to execute arbitrary commands on the system with ROOT privileges.
*CVSS:
| Base Score: | 3.4 |
| Access Vector: | Local |
| Access Complexity: | High |
| Authentication: | Required |
| Confidentiality Impact: | Complete |
| Integrity Impact: | Complete |
| Availability Impact: | Complete |
| Temporal Score: | 2.7 |
| Exploitability: | Proof-Of-Concept |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Privileges
Remedy:
Refer to McAfee ServicePortal Document ID: 518722 for patch, upgrade, or suggested workaround information. See References.
References:
- BugTraq Mailing List, Tue Feb 27 2007 - 16:54:40 CST : [NETRAGARD-20070220 SECURITY ADVISORY] [McAfee VirusScan for Mac (Virex) Local root exploit and Scan Bypass].
- McAfee Security Bulletin, February 13, 2007: Virex 7.7 patch 1 or higher fixes vulnerabilities.
- McAfee ServicePortal Document ID: 518722 : McAfee Security Bulletin: Virex 7.7 patch 1 or higher fixes vulnerabilities [518722].
- BID-22744: McAfee VirusScan Virex Insecure File Creation and Scan Bypass Vulnerabilities
- CVE-2007-1227: VShieldCheck in McAfee VirusScan for Mac (Virex) before 7.7 patch 1 allow local users to change permissions of arbitrary files via a symlink attack on /Library/Application Support/Virex/VShieldExclude.txt, as demonstrated by symlinking to the root crontab file to execute arbitrary commands.
- SA24337: McAfee Virex VShieldExclude.txt Privilege Escalation
- SECTRACK ID: 1017707: McAfee Virex `VShieldExclude.txt` File Symlink Flaw Lets Local Users Obtain Root Privileges
- VUPEN/ADV-2007-0777: McAfee Virex for Mac Insecure File Permissions Local Privilege Escalation Vulnerability
Platforms Affected:
- McAfee Virex 7.7 Macintosh
Reported:
Feb 27, 2007
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.