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CVE-2012-4643

Published: Oct 29, 2012Updated: Apr 29, 2026 Sources: CVE List NVDCWE-399
NVD MITRE
7.1CVSSHIGH
EPSS Score
1.5%
Top 28.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

The DHCP server on Cisco Adaptive Security Appliances (ASA) 5500 series devices, and the ASA Services Module (ASASM) in Cisco Catalyst 6500 series devices, with software 7.0 before 7.2(5.8), 7.1 before 7.2(5.8), 7.2 before 7.2(5.8), 8.0 before 8.0(5.28), 8.1 before 8.1(2.56), 8.2 before 8.2(5.27), 8.3 before 8.3(2.31), 8.4 before 8.4(3.10), 8.5 before 8.5(1.9), and 8.6 before 8.6(1.5) does not properly allocate memory for DHCP packets, which allows remote attackers to cause a denial of service (device reload) via a series of crafted IPv4 packets, aka Bug ID CSCtw84068.

CVSS Vector Breakdown

AV:NAC:MAu:NC:NI:NA:C
Exploitability
AV:NAccess Vector
Network
AC:MAccess Complexity
Medium
Au:NAuthentication
None
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:CAvailability
Complete
Open in CVSS calculator →

Weaknesses

CWE-399

Affected Products

n/an/a
adaptive security appliance softwarecisco
On-premNetwork Device
Networking Infrastructure / firewall
5500 series adaptive security appliancecisco
On-premNetwork Device
Networking Infrastructure / firewall
catalyst 6500cisco
On-premNetwork Device
Networking Infrastructure / router-switch
catalyst 6503-ecisco
On-prem
Networking Infrastructure / router-switch
ciscocommercialUSNetworking Infrastructureaka cisco systems, cisco systems inc.
and 7 more affected products View all →

Exploitability

Official Patch Available

References

http://www.securityfocus.com/bid/55861
securityfocus.com
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20121010-asa
tools.cisco.com
http://osvdb.org/86145
osvdb.org

Timeline

Published
Oct 29, 2012
Last Updated
Apr 29, 2026

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