Xen xenq-shm symlink
| xen-xenqshm-symlink (37403) |  Medium Risk |
Description:
Xen could allow a local attacker to launch a symlink attack. The xenq-shm file is created with insecure permissions. A local attacker could exploit this vulnerability by creating a symbolic link from a temporary file to other files on the system, which would allow the attacker to truncate arbitrary files on the system with elevated privileges.
*CVSS:
| Base Score: | 3.3 |
| Access Vector: | Local |
| Access Complexity: | Medium |
| Authentication: | None |
| Confidentiality Impact: | None |
| Integrity Impact: | Partial |
| Availability Impact: | Partial |
| Temporal Score: | 2.9 |
| Exploitability: | High |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
File Manipulation
Remedy:
Refer to DSA-1395-1 for patch, upgrade, or workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
References:
- Debian Bug report logs - #447795: xen-utils-3.0.3-1: [CVE-2007-3919] xenmon.py / xenbaked insecure file accesss.
- Xen Web site: Xen.
- BID-26190: Xen 'xenmon.py' and 'xenbaked' Insecure Temporary File Creation Vulnerability
- CVE-2007-3919: (1) xenbaked and (2) xenmon.py in Xen 3.1 and earlier allow local users to truncate arbitrary files via a symlink attack on /tmp/xenq-shm.
- DSA-1395: xen-utils -- insecure temporary files
- MDKSA-2007:203: Updated xen packages fix multiple vulnerabilities
- RHSA-2008-0194: Important: xen security and bug fix update
- SA27389: Xen "xenbaked" Insecure Temporary Files
- SECTRACK ID: 1018859: Xen Insecure Temporary File Lets Local Users Truncate Files
- VUPEN/ADV-2007-3621: Xen xenbaked and xenmon Insecure Temporary File Handling Issue
Platforms Affected:
- Debian Debian Linux 4.0
- MandrakeSoft Mandrake Linux 2007
- MandrakeSoft Mandrake Linux 2007 X86_64
- MandrakeSoft Mandrake Linux 2007.1
- MandrakeSoft Mandrake Linux 2007.1 X86_64
- MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
- MandrakeSoft Mandrake Linux Corporate Server 4.0
- RedHat Enterprise Linux 5
- RedHat Enterprise Linux 5 Client
- RedHat RHEL Desktop Multi OS 5 Client
- RedHat RHEL Virtualization 5 Server
- XenSource Xen 3.1
- XenSource Xen 3.x
Reported:
Oct 23, 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.