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…
Does this matter?
Lower severity and a low EPSS score (0.48%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 2.0
- 4.4 MEDIUMAV:L/AC:M/Au:N/C:P/I:P/A:P
- EPSS
- 0.48% probability · 40th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- linux/linux kernel · opensuse/opensuse · debian/debian linux · canonical/ubuntu linux · vmware/esx
- Source
- cve@mitre.org
References
- http://article.gmane.org/gmane.linux.nfs/26592Exploit
- http://bugzilla.linux-nfs.org/show_bug.cgi?id=131Issue Tracking, Patch, Third Party Advisory
- http://linux-nfs.org/pipermail/nfsv4/2006-November/005313.htmlBroken Link
- http://linux-nfs.org/pipermail/nfsv4/2006-November/005323.htmlBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00004.htmlMailing List, Third Party Advisory
- http://secunia.com/advisories/35106Broken Link
- http://secunia.com/advisories/35298Broken Link
- http://secunia.com/advisories/35394Broken Link
- http://secunia.com/advisories/35656Broken Link
- http://secunia.com/advisories/35847Broken Link
- http://secunia.com/advisories/36051Broken Link
- http://secunia.com/advisories/36327Broken Link
- http://secunia.com/advisories/37471Broken Link
- http://wiki.rpath.com/Advisories:rPSA-2009-0111Broken Link
- http://www.debian.org/security/2009/dsa-1809Third Party Advisory
- http://www.debian.org/security/2009/dsa-1844Third Party Advisory
- http://www.debian.org/security/2009/dsa-1865Third Party Advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:135Broken Link
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:148Broken Link
- http://www.openwall.com/lists/oss-security/2009/05/13/2Exploit, Mailing List, Third Party Advisory
- http://www.redhat.com/support/errata/RHSA-2009-1157.htmlBroken Link
- http://www.securityfocus.com/archive/1/505254/100/0/threadedThird Party Advisory, VDB Entry
- http://www.securityfocus.com/archive/1/507985/100/0/threadedThird Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/34934Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/usn-793-1Third Party Advisory
- http://www.vmware.com/security/advisories/VMSA-2009-0016.htmlPatch, Third Party Advisory
- http://www.vupen.com/english/advisories/2009/1331Broken Link
- http://www.vupen.com/english/advisories/2009/3316Broken Link
- https://bugzilla.redhat.com/show_bug.cgi?id=500297Exploit, Issue Tracking, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.