medium
4.4
CWE
264
Advisory Published
CVE Published
Updated

CVE-2009-1630

First published: Tue May 12 2009(Updated: )

Description of problem: Frank Filz reported: the problem is that permission checking is skipped if atomic open is possible, but when exec opens a file, it just opens it O_READONLY which means EXEC permission will not be checked at that time. This problem is observed by the following sequence (executed as root): mount -t nfs4 server:/ /mnt4 echo "ls" &gt;/mnt4/foo chmod 744 /mnt4/foo su guest -c "mnt4/foo" Reference: <a href="http://article.gmane.org/gmane.linux.nfs/26592">http://article.gmane.org/gmane.linux.nfs/26592</a>

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Linux Kernel<=2.6.29.3
SUSE Linux=11.1
SUSE Linux=11.0
Debian=5.0
Debian=4.0
Ubuntu=9.04
Ubuntu=8.10
Ubuntu=8.04
Ubuntu=6.06
VMware ESXi=3.5
VMware ESXi=4.0
VMware ESXi=2.5.5
VMware ESXi=3.0.3

Remedy

http://bugzilla.linux-nfs.org/show_bug.cgi?id=131

Remedy

http://www.vmware.com/security/advisories/VMSA-2009-0016.html

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=500297

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2009-1630?

    The severity of CVE-2009-1630 is classified as medium risk due to potential unauthorized file access.

  • How do I fix CVE-2009-1630?

    To fix CVE-2009-1630, ensure that your system is updated to a kernel version that contains the appropriate patch.

  • What systems are affected by CVE-2009-1630?

    CVE-2009-1630 affects various Linux distributions, including specific versions of Debian, Ubuntu, openSUSE, and VMware ESX.

  • What does CVE-2009-1630 exploit in the Linux kernel?

    CVE-2009-1630 exploits the lack of permission checking during file execution due to atomic open mechanisms.

  • Can I verify if my system is vulnerable to CVE-2009-1630?

    You can verify vulnerability to CVE-2009-1630 by checking your Linux kernel version against the versions listed in the vulnerability report.

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