PT-2011-3286 · Novell · Ncpfs

Dan Rosenberg · Published 2011-04-10 · Updated 2017-08-17 · CVE-2011-1679

Positive Technologies (AI Summary)

CVSS v2.0

3.3

Low

Base vector

AV:L/AC:M/Au:N/C:P/I:P/A:N

Name of the Vulnerable Software and Affected Versions ncpfs versions 2.2.6 and earlier

Description The issue allows local users to trigger corruption of the /etc/mtab file by exploiting a flaw in how ncpfs handles resource limits. Specifically, ncpfs attempts to use ncpmount to append to the /etc/mtab file and ncpumount to append to the /etc/mtab.tmp file without first checking whether resource limits would interfere. This can be exploited by a process with a small RLIMIT FSIZE value.

Recommendations For ncpfs versions 2.2.6 and earlier, consider updating to a version that addresses this issue, although the specific fixed version is not provided in the available data. As a temporary workaround, consider restricting the use of ncpmount and ncpumount to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2011-1679

Affected Products

Ncpfs

References · 19

• https://nvd.nist.gov/vuln/detail/CVE-2011-1679 · Security Note
• http://openwall.com/lists/oss-security/2011/03/14/7 · Note
• http://openwall.com/lists/oss-security/2011/03/15/6 · Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/66701 · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=688980 · Note
• http://openwall.com/lists/oss-security/2011/03/14/16 · Note
• http://openwall.com/lists/oss-security/2011/03/31/4 · Note
• http://openwall.com/lists/oss-security/2011/03/07/9 · Note
• http://openwall.com/lists/oss-security/2011/03/05/3 · Note
• http://openwall.com/lists/oss-security/2011/03/31/3 · Note
• http://openwall.com/lists/oss-security/2011/04/01/2 · Note
• http://openwall.com/lists/oss-security/2011/03/14/5 · Note
• http://openwall.com/lists/oss-security/2011/03/04/11 · Note
• http://openwall.com/lists/oss-security/2011/03/05/7 · Note
• http://openwall.com/lists/oss-security/2011/03/04/10 · Note