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Vulnerability record · CVE-2013-4256 · published 9 October 2013

CVE-2013-4256: Canonical ubuntu linux memory buffer overflow vulnerability

Canonical · Ubuntu Linux

Multiple stack-based and heap-based buffer overflows in Network Audio System (NAS) 1.9.3 allow local users to cause a denial of service (crash) or possibly execute arbitrary code via the (1) display command argument to the ProcessCommandLine function in server/os/utils.c; (2) ResetHosts function in server/os/access.c; (3) open_unix_socket, (4) open_isc_local, (5) open_xsight_local, (6) open_att_local, or (7) open_att_svr4_local function in server/os/connection.c; the (8) AUDIOHOST environment variable to the CreateWellKnownSockets or (9) AmoebaTCPConnectorThread function in server/os/connection.c; or (10) unspecified vectors related to logging in the osLogMsg function in server/os/aulog.c.

4.6 CVSS 2.0 Medium EPSS 0.70% · top 48.6% CWE-119 · Memory buffer overflow
4.6CVSS 2.0 base score
0.70%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
14References, 4 tagged exploit
16 Jun 2026Last modified by NVD

Description

Multiple stack-based and heap-based buffer overflows in Network Audio System (NAS) 1.9.3 allow local users to cause a denial of service (crash) or possibly execute arbitrary code via the (1) display command argument to the ProcessCommandLine function in server/os/utils.c; (2) ResetHosts function in server/os/access.c; (3) open_unix_socket, (4) open_isc_local, (5) open_xsight_local, (6) open_att_local, or (7) open_att_svr4_local function in server/os/connection.c; the (8) AUDIOHOST environment variable to the CreateWellKnownSockets or (9) AmoebaTCPConnectorThread function in server/os/connection.c; or (10) unspecified vectors related to logging in the osLogMsg function in server/os/aulog.c.

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

Affected products

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

References

LinkTags
http://radscan.com/pipermail/nas/2013-August/001270.html Exploit
http://sourceforge.net/p/nas/code/288 ExploitPatch
http://www.debian.org/security/2013/dsa-2771
http://www.openwall.com/lists/oss-security/2013/08/16/2 Patch
http://www.openwall.com/lists/oss-security/2013/08/19/3 Patch
http://www.securityfocus.com/bid/61848
http://www.ubuntu.com/usn/USN-1986-1 Vendor Advisory
http://radscan.com/pipermail/nas/2013-August/001270.html Exploit
http://sourceforge.net/p/nas/code/288 ExploitPatch
http://www.debian.org/security/2013/dsa-2771
http://www.openwall.com/lists/oss-security/2013/08/16/2 Patch
http://www.openwall.com/lists/oss-security/2013/08/19/3 Patch
http://www.securityfocus.com/bid/61848
http://www.ubuntu.com/usn/USN-1986-1 Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2013-4256), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.