Vulnerability Monitor

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CVE-2014-3640

The sosendto function in slirp/udp.c in QEMU before 2.1.2 allows local users to cause a denial of service (NULL pointer dereference) by sending a udp packet with a value of 0 in the source port and address, which triggers access of an uninitialized socket.

Security Impact Summary

CVE-2014-3640 is a security vulnerability that . Impacting 7 products from debian, from qemu, from redhat and 4 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2014, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2014-11-07T19:55:02.713

Last Modified

2026-05-06T22:30:45.220

Status

Modified

Source

[email protected]

Severity

CVSSv2: 2.1 (LOW)

CVSSv2 Vector

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

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

3.9

Impact Score

2.9

Weaknesses

Type: Primary
CWE-476

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	debian	debian_linux	7.0	Yes
Application	qemu	qemu	2.0.0	Yes
Application	qemu	qemu	2.0.0	Yes
Application	qemu	qemu	2.0.0	Yes
Application	qemu	qemu	2.0.0	Yes
Application	qemu	qemu	2.0.0	Yes
Application	qemu	qemu	2.0.2	Yes
Application	qemu	qemu	2.1.0	Yes
Application	qemu	qemu	2.1.0	Yes
Application	qemu	qemu	2.1.0	Yes
Application	qemu	qemu	2.1.0	Yes
Application	qemu	qemu	2.1.0	Yes
Application	qemu	qemu	2.1.0	Yes
Application	qemu	qemu	2.1.1	Yes
Operating System	redhat	enterprise_linux_desktop	7.0	Yes
Operating System	redhat	enterprise_linux_hpc_node	7.0	Yes
Operating System	redhat	enterprise_linux_server	7.0	Yes
Operating System	redhat	enterprise_linux_workstation	7.0	Yes
Operating System	canonical	ubuntu_linux	10.04	Yes
Operating System	canonical	ubuntu_linux	12.04	Yes
Operating System	canonical	ubuntu_linux	14.04	Yes
Operating System	canonical	ubuntu_linux	14.10	Yes

References

http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg03543.html Patch, Vendor Advisory ([email protected])
http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg04598.html Patch, Vendor Advisory ([email protected])
http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg04707.html Patch, Vendor Advisory ([email protected])
http://rhn.redhat.com/errata/RHSA-2015-0349.html Third Party Advisory ([email protected])
http://rhn.redhat.com/errata/RHSA-2015-0624.html Third Party Advisory ([email protected])
http://www.debian.org/security/2014/dsa-3044 ([email protected])
http://www.debian.org/security/2014/dsa-3045 Third Party Advisory ([email protected])
http://www.ubuntu.com/usn/USN-2409-1 Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1144818 Issue Tracking ([email protected])
http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg03543.html Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg04598.html Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg04707.html Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2015-0349.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2015-0624.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2014/dsa-3044 (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2014/dsa-3045 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2409-1 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=1144818 Issue Tracking (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For debian's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.