Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SSL VPN Direct Memory Access Denial of Service Vulnerability
Published Oct 21, 2020
8.6
HIGHCVSS 3.1
EPSS 1.87%
Description
A vulnerability in the SSL VPN negotiation process for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to inefficient direct memory access (DMA) memory management during the negotiation phase of an SSL VPN connection. An attacker could exploit this vulnerability by sending a steady stream of crafted Datagram TLS (DTLS) traffic to an affected device. A successful exploit could allow the attacker to exhaust DMA memory on the device and cause a DoS condition.
Affected products
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||
|---|---|---|---|---|---|---|
| Cisco | Cisco Adaptive Security Appliance (ASA) Software | n/a |
|
- < 9.6.4.45
- < 6.3.0.6
- ≥ 6.4.0 · < 6.4.0.10
- ≥ 6.5.0 · < 6.5.0.5
- ≥ 6.6.0 · < 6.6.1
- ≥ 9.8.0 · < 9.8.4.29
- ≥ 9.9.0 · < 9.9.2.80
- ≥ 9.10.0 · < 9.10.1.44
- ≥ 9.12.0 · < 9.12.4.4
- ≥ 9.13.0 · < 9.13.1.13
- ≥ 9.14.0 · < 9.14.1.30
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (2)
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-24800 Advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-sslvpndma-dos-HRrqB9Yx vendor-advisoryx_refsource_CISCOVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-24800 | Advisory | |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-sslvpndma-dos-HRrqB9Yx | vendor-advisoryx_refsource_CISCOVendor Advisory |
Change history (0)
No recorded changes yet.