Strix
26.1K

CVE-2012-4643

UnknownEPSS 1.53%

Last modified

CVE-2012-4643 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.53% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
1.53%

71.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoAdaptive Security Appliance Software7.0
CiscoAdaptive Security Appliance Software7.0\(0\)
CiscoAdaptive Security Appliance Software7.0\(1\)
CiscoAdaptive Security Appliance Software7.0\(2\)
CiscoAdaptive Security Appliance Software7.0\(4\)
CiscoAdaptive Security Appliance Software7.0\(5\)
CiscoAdaptive Security Appliance Software7.0\(5.2\)
CiscoAdaptive Security Appliance Software7.1
CiscoAdaptive Security Appliance Software7.1\(2\)
CiscoAdaptive Security Appliance Software7.1\(2.5\)
CiscoAdaptive Security Appliance Software7.1\(2.27\)
CiscoAdaptive Security Appliance Software7.1\(2.48\)
CiscoAdaptive Security Appliance Software7.1\(2.49\)
CiscoAdaptive Security Appliance Software7.1\(5\)
CiscoAdaptive Security Appliance Software7.2
CiscoAdaptive Security Appliance Software7.2\(1\)
CiscoAdaptive Security Appliance Software7.2\(1.22\)
CiscoAdaptive Security Appliance Software7.2\(2\)
CiscoAdaptive Security Appliance Software7.2\(2.5\)
CiscoAdaptive Security Appliance Software7.2\(2.7\)
CiscoAdaptive Security Appliance Software7.2\(2.8\)
CiscoAdaptive Security Appliance Software7.2\(2.10\)
CiscoAdaptive Security Appliance Software7.2\(2.14\)
CiscoAdaptive Security Appliance Software7.2\(2.15\)
CiscoAdaptive Security Appliance Software7.2\(2.16\)
CiscoAdaptive Security Appliance Software7.2\(2.17\)
CiscoAdaptive Security Appliance Software7.2\(2.18\)
CiscoAdaptive Security Appliance Software7.2\(2.19\)
CiscoAdaptive Security Appliance Software7.2\(2.48\)
CiscoAdaptive Security Appliance Software7.2\(3\)
CiscoAdaptive Security Appliance Software7.2\(4\)
CiscoAdaptive Security Appliance Software7.2\(5\)
CiscoAdaptive Security Appliance Software8.0
CiscoAdaptive Security Appliance Software8.0\(2\)
CiscoAdaptive Security Appliance Software8.0\(3\)
CiscoAdaptive Security Appliance Software8.0\(4\)
CiscoAdaptive Security Appliance Software8.0\(5\)
CiscoAdaptive Security Appliance Software8.1
CiscoAdaptive Security Appliance Software8.2
CiscoAdaptive Security Appliance Software8.2\(1\)
CiscoAdaptive Security Appliance Software8.2\(2\)
CiscoAdaptive Security Appliance Software8.2\(3\)
CiscoAdaptive Security Appliance Software8.2\(3.9\)
CiscoAdaptive Security Appliance Software8.2\(4\)
CiscoAdaptive Security Appliance Software8.2\(4.1\)
CiscoAdaptive Security Appliance Software8.2\(4.4\)
CiscoAdaptive Security Appliance Software8.2\(5\)
CiscoAdaptive Security Appliance Software8.3\(1\)
CiscoAdaptive Security Appliance Software8.3\(2\)
CiscoAdaptive Security Appliance Software8.4

Showing 50 of 69 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2012-4643?
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.
How severe is CVE-2012-4643?
Severity scoring for CVE-2012-4643 is pending analysis. The EPSS model estimates a 1.53% probability of exploitation in the next 30 days.
How do I fix CVE-2012-4643?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2012-4643?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST