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Vulnerability record · CVE-2013-6410 · published 7 December 2013

CVE-2013-6410: Wouter verhelst nbd permissions and access controls vulnerability

WWouter Verhelst · Nbd

nbd-server in Network Block Device (nbd) before 3.5 does not properly check IP addresses, which might allow remote attackers to bypass intended access restrictions via an IP address that has a partial match in the authfile configuration file.

7.5 CVSS 2.0 High EPSS 2.5% · top 15.6% CWE-264 · Permissions and access controls
7.5CVSS 2.0 base score
2.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

Description

nbd-server in Network Block Device (nbd) before 3.5 does not properly check IP addresses, which might allow remote attackers to bypass intended access restrictions via an IP address that has a partial match in the authfile configuration file.

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

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://sourceforge.net/mailarchive/forum.php?thread_name=529BAA58.2080401%40uter.be&forum_name=nbd-general Patch
http://www.debian.org/security/2013/dsa-2806 Third Party Advisory
http://www.openwall.com/lists/oss-security/2013/11/29/4 Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/64002
http://www.ubuntu.com/usn/USN-2676-1 Third Party Advisory
http://sourceforge.net/mailarchive/forum.php?thread_name=529BAA58.2080401%40uter.be&forum_name=nbd-general Patch
http://www.debian.org/security/2013/dsa-2806 Third Party Advisory
http://www.openwall.com/lists/oss-security/2013/11/29/4 Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/64002
http://www.ubuntu.com/usn/USN-2676-1 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2013-6410), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.