HOMEVULNERABILITIESCVE-2013-4256
MEDIUM

CVE-2013-4256

CWE-119Published: October 9, 2013· Updated: Jun 16, 2026

4.6
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2013-4256 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityP
IntegrityP
AvailabilityP
AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected Vendors & Products

Canonical1 product(s)
ubuntu linux
radscan1 product(s)
network audio system
Source: NVD CPE · 4 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttp://sourceforge.net/p/nas/code/288
PATCHhttp://www.openwall.com/lists/oss-security/2013/08/16/2
PATCHhttp://www.openwall.com/lists/oss-security/2013/08/19/3
PATCHhttp://sourceforge.net/p/nas/code/288
PATCHhttp://www.openwall.com/lists/oss-security/2013/08/16/2
PATCHhttp://www.openwall.com/lists/oss-security/2013/08/19/3
ADVISORYhttp://www.ubuntu.com/usn/USN-1986-1
ADVISORYhttp://www.ubuntu.com/usn/USN-1986-1

All References (14)

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

Quick Facts

CVE IDCVE-2013-4256
CVSS Score4.6 / 10
SeverityMEDIUM
WeaknessCWE-119
CISA KEVNo
Affected2 vendor(s)
PublishedOct 9, 2013

Related CVEs (CWE-119)

CVE-2014-3936
10.0
CVE-2013-4977
10.0
CVE-2009-1227
10.0
CVE-2013-0230
10.0
CVE-2009-4462
10.0
CVE-2009-0692
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2013-4256 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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