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Vulnerability Details : CVE-2009-1630

The nfs_permission function in fs/nfs/dir.c in the NFS client implementation in the Linux kernel 2.6.29.3 and earlier, when atomic_open is available, does not check execute (aka EXEC or MAY_EXEC) permission bits, which allows local users to bypass permissions and execute files, as demonstrated by files on an NFSv4 fileserver.
Publish Date : 2009-05-14 Last Update Date : 2020-08-21
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- CVSS Scores & Vulnerability Types

CVSS Score
4.4
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Bypass a restriction or similar
CWE ID 264

- Vendor Statements

This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 2.1, and 3. It was addressed in Red Hat Enterprise Linux 4, 5, and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2009-1132.html , https://rhn.redhat.com/errata/RHSA-2009-1106.html , and https://rhn.redhat.com/errata/RHSA-2009-1157.html .
Source: Redhat

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat moderate
2.1
AV:L/AC:L/Au:N/C:N/I:P/A:N 2009-05-12 2009-05-09
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- Related OVAL Definitions

Title Definition Id Class Family
CVE-2009-1630 oval:org.opensuse.security:def:20091630 unix
DSA-1809 linux-2.6 -- denial of service, privilege escalation oval:org.mitre.oval:def:8079 unix
DSA-1809-1 linux-2.6 -- denial of service, privilege escalation oval:org.mitre.oval:def:13265 unix
DSA-1844 linux-2.6.24 -- denial of service/privilege escalation oval:org.mitre.oval:def:8024 unix
DSA-1844-1 linux-2.6.24 -- denial of service/privilege escalation oval:org.mitre.oval:def:13582 unix
DSA-1865 linux-2.6 -- denial of service/privilege escalation oval:org.mitre.oval:def:7993 unix
DSA-1865-1 linux-2.6 -- denial of service/privilege escalation oval:org.mitre.oval:def:13654 unix
ELSA-2009:1106: kernel security and bug fix update (Important) oval:org.mitre.oval:def:22334 unix
RHSA-2009:1106 -- kernel security and bug fix update (Important) oval:org.mitre.oval:def:28617 unix
RHSA-2009:1106: kernel security and bug fix update (Important) oval:com.redhat.rhsa:def:20091106 unix
RHSA-2009:1132: kernel security and bug fix update (Important) oval:com.redhat.rhsa:def:20091132 unix
The nfs_permission function in fs/nfs/dir.c in the NFS client implementation in the Linux kernel 2.6.29.3 and earlier, w... oval:org.mitre.oval:def:9990 unix
USN-793-1 -- linux, linux-source-2.6.15 vulnerabilities oval:org.mitre.oval:def:13579 unix
VMware kernel nfs_permission function vulnerability oval:org.mitre.oval:def:8543 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2009-1630

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 6.06 * * * Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 8.04 * * * Version Details Vulnerabilities
3 OS Canonical Ubuntu Linux 8.10 * * * Version Details Vulnerabilities
4 OS Canonical Ubuntu Linux 9.04 * * * Version Details Vulnerabilities
5 OS Debian Debian Linux 4.0 * * * Version Details Vulnerabilities
6 OS Debian Debian Linux 5.0 * * * Version Details Vulnerabilities
7 OS Linux Linux Kernel * * * * Version Details Vulnerabilities
8 OS Opensuse Opensuse 11.0 * * * Version Details Vulnerabilities
9 OS Opensuse Opensuse 11.1 * * * Version Details Vulnerabilities
10 OS Vmware ESX 2.5.5 * * * Version Details Vulnerabilities
11 OS Vmware ESX 3.0.3 * * * Version Details Vulnerabilities
12 OS Vmware ESX 3.5 * * * Version Details Vulnerabilities
13 OS Vmware ESX 4.0 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 4
Debian Debian Linux 2
Linux Linux Kernel 1
Opensuse Opensuse 2
Vmware ESX 4

- References For CVE-2009-1630

http://www.securityfocus.com/bid/34934
BID 34934 Linux Kernel NFS 'MAY_EXEC' Security Bypass Vulnerability Release Date:2009-11-24
http://www.vupen.com/english/advisories/2009/3316
VUPEN ADV-2009-3316
http://www.vmware.com/security/advisories/VMSA-2009-0016.html CONFIRM
http://www.debian.org/security/2009/dsa-1865
DEBIAN DSA-1865
http://secunia.com/advisories/36327
SECUNIA 36327
http://secunia.com/advisories/35847
SECUNIA 35847
http://wiki.rpath.com/Advisories:rPSA-2009-0111 CONFIRM
http://www.vupen.com/english/advisories/2009/1331
VUPEN ADV-2009-1331
http://www.debian.org/security/2009/dsa-1809
DEBIAN DSA-1809
http://secunia.com/advisories/35298
SECUNIA 35298
http://secunia.com/advisories/35394
SECUNIA 35394
http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html
SUSE SUSE-SA:2009:031
http://www.mandriva.com/security/advisories?name=MDVSA-2009:135
MANDRIVA MDVSA-2009:135
http://www.mandriva.com/security/advisories?name=MDVSA-2009:148
MANDRIVA MDVSA-2009:148
http://www.redhat.com/support/errata/RHSA-2009-1157.html
REDHAT RHSA-2009:1157
http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00004.html
SUSE SUSE-SA:2009:038
http://secunia.com/advisories/36051
SECUNIA 36051
http://www.debian.org/security/2009/dsa-1844
DEBIAN DSA-1844
http://article.gmane.org/gmane.linux.nfs/26592
MLIST [linux-nfs] 20090509 [NFS] [PATCH] nfs: Fix NFS v4 client handling of MAY_EXEC in nfs_permission.
https://bugzilla.redhat.com/show_bug.cgi?id=500297 CONFIRM
http://bugzilla.linux-nfs.org/show_bug.cgi?id=131 CONFIRM
http://www.openwall.com/lists/oss-security/2009/05/13/2
MLIST [oss-security] 20090513 CVE request: kernel: problem with NFS v4 client handling of MAY_EXEC in nfs_permission
http://secunia.com/advisories/35106
SECUNIA 35106
http://linux-nfs.org/pipermail/nfsv4/2006-November/005323.html
MLIST [nfsv4] 20061117 [Patch] Re: Status of execute permissions in NFSv4 ACLs ?
http://linux-nfs.org/pipermail/nfsv4/2006-November/005313.html
MLIST [nfsv4] 20061116 Status of execute permissions in NFSv4 ACLs ?
http://secunia.com/advisories/37471
SECUNIA 37471
http://secunia.com/advisories/35656
SECUNIA 35656
http://www.ubuntu.com/usn/usn-793-1
UBUNTU USN-793-1
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9990
OVAL oval:org.mitre.oval:def:9990
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8543
OVAL oval:org.mitre.oval:def:8543
http://www.securityfocus.com/archive/1/507985/100/0/threaded
BUGTRAQ 20091120 VMSA-2009-0016 VMware vCenter and ESX update release and vMA patch release address multiple security issue in third party components
http://www.securityfocus.com/archive/1/505254/100/0/threaded
BUGTRAQ 20090724 rPSA-2009-0111-1 kernel

- Metasploit Modules Related To CVE-2009-1630

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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