CVE-2011-1679

CVE-2011-1679 is a low-severity vulnerability in Ncpfs with a CVSS 2.0 base score of 3.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

• Severity: Low (CVSS 2.0 base score 3.3)
• EPSS exploit prediction: 0% (29th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-20
• Affected product: Ncpfs
• Published: 2011-04-10
• Last modified: 2026-06-16

Description

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 of the /etc/mtab file via a process with a small RLIMIT_FSIZE value, a related issue to CVE-2011-1089.

Frequently asked questions

What is 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 of the /etc/mtab file via a process with a small RLIMIT_FSIZE value, a related issue to CVE-2011-1089.

How severe is CVE-2011-1679?

CVE-2011-1679 has a CVSS 2.0 base score of 3.3, rated low severity.

Is CVE-2011-1679 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-1679?

CVE-2011-1679 primarily affects Ncpfs. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-1679?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-1679 published?

CVE-2011-1679 was published on 2011-04-10 and last updated on 2026-06-16.

References

• http://openwall.com/lists/oss-security/2011/03/04/10
• http://openwall.com/lists/oss-security/2011/03/04/11
• http://openwall.com/lists/oss-security/2011/03/04/12
• http://openwall.com/lists/oss-security/2011/03/04/9
• http://openwall.com/lists/oss-security/2011/03/05/3
• http://openwall.com/lists/oss-security/2011/03/05/7
• http://openwall.com/lists/oss-security/2011/03/07/9
• http://openwall.com/lists/oss-security/2011/03/14/16
• http://openwall.com/lists/oss-security/2011/03/14/5
• http://openwall.com/lists/oss-security/2011/03/14/7
• http://openwall.com/lists/oss-security/2011/03/15/6
• http://openwall.com/lists/oss-security/2011/03/22/4
• http://openwall.com/lists/oss-security/2011/03/22/6
• http://openwall.com/lists/oss-security/2011/03/31/3
• http://openwall.com/lists/oss-security/2011/03/31/4
• http://openwall.com/lists/oss-security/2011/04/01/2
• https://bugzilla.redhat.com/show_bug.cgi?id=688980
• https://exchange.xforce.ibmcloud.com/vulnerabilities/66701

Affected products (6)

• cpe:2.3:a:ncpfs:ncpfs:*:*:*:*:*:*:*:*
• cpe:2.3:a:ncpfs:ncpfs:2.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:ncpfs:ncpfs:2.2.2:*:*:*:*:*:*:*
• cpe:2.3:a:ncpfs:ncpfs:2.2.3:*:*:*:*:*:*:*
• cpe:2.3:a:ncpfs:ncpfs:2.2.4:*:*:*:*:*:*:*
• cpe:2.3:a:ncpfs:ncpfs:2.2.5:*:*:*:*:*:*:*

More vulnerabilities in Ncpfs

• CVE-2005-0014 — High (CVSS 7.5): Buffer overflow in ncplogin in ncpfs before 2.2.6 allows remote malicious NetWare servers to execute arbitrary code on…
• CVE-2005-0013 — High (CVSS 7.2): nwclient.c in ncpfs before 2.2.6 does not drop root privileges before executing utilities using the NetWare client…
• CVE-2004-1079 — High (CVSS 7.2): Buffer overflow in (1) ncplogin and (2) ncpmap in nwclient.c for ncpfs 2.2.4, and possibly other versions, may allow…
• CVE-2011-1680 — Medium (CVSS 4.4): ncpmount in ncpfs 2.2.6 and earlier does not remove the /etc/mtab~ lock file after a failed attempt to add a mount…
• CVE-2010-0788 — Medium (CVSS 4.4): ncpfs 2.2.6 allows local users to cause a denial of service, obtain sensitive information, or possibly gain privileges…
• CVE-2010-0791 — Low (CVSS 2.1): The (1) ncpmount, (2) ncpumount, and (3) ncplogin programs in ncpfs 2.2.6 do not properly create lock files, which…

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