// For flags

CVE-2009-1630

kernel: nfs: fix NFS v4 client handling of MAY_EXEC in nfs_permission

Severity Score

7.8
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

3
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

La función nfs_permission en fs/nfs/dir.c en la implementación cliente NFS en Linux kernel v2.6.29.3 y versiones anteriores, cuando atomic_open está activo, no comprueba la ejecución (también conocido como EXEC or MAY_EXEC) de permisos de bits, lo cual permite a usuarios locales evitar permisos y ejecutar ficheros, como lo demostrado por ficheros en un servidor de ficheros NFSv4.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2009-05-14 CVE Reserved
  • 2009-05-14 CVE Published
  • 2024-08-07 CVE Updated
  • 2024-08-07 First Exploit
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-264: Permissions, Privileges, and Access Controls
CAPEC
References (33)
URL Tag Source
http://linux-nfs.org/pipermail/nfsv4/2006-November/005313.html Broken Link
http://linux-nfs.org/pipermail/nfsv4/2006-November/005323.html Broken Link
http://secunia.com/advisories/35106 Broken Link
http://secunia.com/advisories/35298 Broken Link
http://secunia.com/advisories/35394 Broken Link
http://secunia.com/advisories/35656 Broken Link
http://secunia.com/advisories/35847 Broken Link
http://secunia.com/advisories/36051 Broken Link
http://secunia.com/advisories/36327 Broken Link
http://secunia.com/advisories/37471 Broken Link
http://wiki.rpath.com/Advisories:rPSA-2009-0111 Broken Link
http://www.securityfocus.com/archive/1/505254/100/0/threaded Mailing List
http://www.securityfocus.com/archive/1/507985/100/0/threaded Mailing List
http://www.securityfocus.com/bid/34934 Third Party Advisory
http://www.vupen.com/english/advisories/2009/1331 Broken Link
http://www.vupen.com/english/advisories/2009/3316 Broken Link
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8543 Signature
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9990 Signature
URL Date SRC
http://article.gmane.org/gmane.linux.nfs/26592 2024-08-07
http://www.openwall.com/lists/oss-security/2009/05/13/2 2024-08-07
https://bugzilla.redhat.com/show_bug.cgi?id=500297 2024-08-07
URL Date SRC
http://bugzilla.linux-nfs.org/show_bug.cgi?id=131 2020-08-21
http://www.vmware.com/security/advisories/VMSA-2009-0016.html 2020-08-21
URL Date SRC
http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html 2020-08-21
http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00004.html 2020-08-21
http://www.debian.org/security/2009/dsa-1809 2020-08-21
http://www.debian.org/security/2009/dsa-1844 2020-08-21
http://www.debian.org/security/2009/dsa-1865 2020-08-21
http://www.mandriva.com/security/advisories?name=MDVSA-2009:135 2020-08-21
http://www.mandriva.com/security/advisories?name=MDVSA-2009:148 2020-08-21
http://www.redhat.com/support/errata/RHSA-2009-1157.html 2020-08-21
http://www.ubuntu.com/usn/usn-793-1 2020-08-21
https://access.redhat.com/security/cve/CVE-2009-1630 2009-07-14
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Linux
Search vendor "Linux"
 Linux Kernel
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 <= 2.6.29.3
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Affected
Opensuse
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 Opensuse
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 11.0
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Affected
Opensuse
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 Opensuse
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 11.1
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Affected
Debian
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 Debian Linux
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 4.0
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Affected
Debian
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 Debian Linux
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 5.0
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Affected
Canonical
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 Ubuntu Linux
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 6.06
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Affected
Canonical
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 Ubuntu Linux
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 8.04
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Affected
Canonical
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 Ubuntu Linux
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 8.10
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Affected
Canonical
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 Ubuntu Linux
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 9.04
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Affected
Vmware
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 Esx
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 2.5.5
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Affected
Vmware
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 Esx
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 3.0.3
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Affected
Vmware
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 Esx
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 3.5
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Affected
Vmware
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 Esx
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 4.0
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Affected