Vulnerability CVE-2010-0791


Published: 2010-03-10   Modified: 2012-02-13

Description:
The (1) ncpmount, (2) ncpumount, and (3) ncplogin programs in ncpfs 2.2.6 do not properly create lock files, which allows local users to cause a denial of service (application failure) via unspecified vectors that trigger the creation of a /etc/mtab~ file that persists after the program exits.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
ncpfs 2.2.6 Multiple Vulnerabilities
dan j rosenberg
11.03.2010

Type:

CWE-264

(Permissions, Privileges, and Access Controls)

Vendor: Ncpfs
Product: Ncpfs 
Version: 2.2.6;

CVSS2 => (AV:L/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
2.1/10
2.9/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial

 References:
http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00002.html
http://lists.opensuse.org/opensuse-security-announce/2010-06/msg00001.html
http://seclists.org/fulldisclosure/2010/Mar/122
http://www.securityfocus.com/archive/1/509893/100/0/threaded
http://www.securityfocus.com/archive/1/509894/100/0/threaded
http://www.securityfocus.com/bid/38563

Related CVE
CVE-2011-1680
ncpmount in ncpfs 2.2.6 and earlier does not remove the /etc/mtab~ lock file after a failed attempt to add a mount entry, which has unspecified impact and local attack vectors.
CVE-2011-1679
ncpfs 2.2.6 and earlier attempts to use (1) ncpmount to append to the /etc/mtab file and (2) ncpumount to append to the /etc/mtab.tmp file without first checking whether resource limits would interfere, which allows local users to trigger corruption ...
CVE-2010-0790
sutil/ncpumount.c in ncpumount in ncpfs 2.2.6 produces certain detailed error messages about the results of privileged file-access attempts, which allows local users to determine the existence of arbitrary files via the mountpoint name.
CVE-2010-0788
ncpfs 2.2.6 allows local users to cause a denial of service, obtain sensitive information, or possibly gain privileges via symlink attacks involving the (1) ncpmount and (2) ncpumount programs.
CVE-2005-0013
nwclient.c in ncpfs before 2.2.6 does not drop root privileges before executing utilities using the NetWare client functions, which allows local users to gain privileges.
CVE-2005-0014
Buffer overflow in ncplogin in ncpfs before 2.2.6 allows remote malicious NetWare servers to execute arbitrary code on the NetWare client.
CVE-2004-1079
Buffer overflow in (1) ncplogin and (2) ncpmap in nwclient.c for ncpfs 2.2.4, and possibly other versions, may allow local users to gain privileges via a long -T option.

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