Strix
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CVE-2015-6321

UnknownEPSS 2.76%

Last modified

CVE-2015-6321 is a vulnerability of currently unknown severity. Cisco AsyncOS before 8.5.7-042, 9.x before 9.1.0-032, 9.1.x before 9.1.1-023, and 9.5.x and 9.6.x before 9.6.0-042 on Email Security Appliance (ESA) devices; before 9.1.0-032, 9.1.1 before 9.1.1-005, and 9.5.x before 9.5.0-025 on Content Security Management Appliance (SMA) devices; and before 7.7.0-725 and 8.x before 8.0.8-113 on Web Security Appliance (WSA) devices allows remote attackers to cause a denial of service (memory consumption) via a flood of TCP packets, aka Bug IDs CSCus79774, CSCus79777, and CSCzv95795.. EPSS estimates a 2.76% chance of exploitation in the next 30 days.

Description

Cisco AsyncOS before 8.5.7-042, 9.x before 9.1.0-032, 9.1.x before 9.1.1-023, and 9.5.x and 9.6.x before 9.6.0-042 on Email Security Appliance (ESA) devices; before 9.1.0-032, 9.1.1 before 9.1.1-005, and 9.5.x before 9.5.0-025 on Content Security Management Appliance (SMA) devices; and before 7.7.0-725 and 8.x before 8.0.8-113 on Web Security Appliance (WSA) devices allows remote attackers to cause a denial of service (memory consumption) via a flood of TCP packets, aka Bug IDs CSCus79774, CSCus79777, and CSCzv95795.

Metrics

EPSS Probability
2.76%

84.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoWeb Security Appliance5.6.0-623
CiscoWeb Security Appliance6.0.0-000
CiscoWeb Security Appliance7.5.0-000
CiscoWeb Security Appliance7.5.0-825
CiscoWeb Security Appliance7.5.1-000
CiscoWeb Security Appliance7.5.2-000
CiscoWeb Security Appliance7.7.0-000
CiscoWeb Security Appliance7.7.1-000
CiscoWeb Security Appliance8.0.0-000
CiscoWeb Security Appliance8.5.0.000
CiscoContent Security Management Appliance7.8.0-328
CiscoContent Security Management Appliance7.8.1-001
CiscoContent Security Management Appliance7.9.0-201
CiscoContent Security Management Appliance7.9.2-116
CiscoContent Security Management Appliance8.0.1-031
CiscoContent Security Management Appliance8.1.0-001
CiscoContent Security Management Appliance8.1.1-033
CiscoContent Security Management Appliance8.1.2-000
CiscoContent Security Management Appliance8.2.0-238
CiscoContent Security Management Appliance8.3.0-350
CiscoContent Security Management Appliance8.3.5-061
CiscoContent Security Management Appliance8.3.6-014
CiscoContent Security Management Appliance8.3.7-010
CiscoContent Security Management Appliance8.4.0-150
CiscoContent Security Management Appliance9.0.0-073
CiscoContent Security Management Appliance9.1.0-004
CiscoEmail Security Appliance7.6.1-000
CiscoEmail Security Appliance7.6.3-000
CiscoEmail Security Appliance7.7.0-000
CiscoEmail Security Appliance7.7.1-000
CiscoEmail Security Appliance7.8.0-311
CiscoEmail Security Appliance8.5.6-052
CiscoEmail Security Appliance8.6.0-011
CiscoEmail Security Appliance8.9.1-000
CiscoEmail Security Appliance8.9.2-032
CiscoEmail Security Appliance9.0.0-212
CiscoEmail Security Appliance9.0.5-000
CiscoEmail Security Appliance9.1.0-011
CiscoEmail Security Appliance9.4.4-000
CiscoEmail Security Appliance9.5.0-000

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2015-6321?
Cisco AsyncOS before 8.5.7-042, 9.x before 9.1.0-032, 9.1.x before 9.1.1-023, and 9.5.x and 9.6.x before 9.6.0-042 on Email Security Appliance (ESA) devices; before 9.1.0-032, 9.1.1 before 9.1.1-005, and 9.5.x before 9.5.0-025 on Content Security Management Appliance (SMA) devices; and before 7.7.0-725 and 8.x before 8.0.8-113 on Web Security Appliance (WSA) devices allows remote attackers to cause a denial of service (memory consumption) via a flood of TCP packets, aka Bug IDs CSCus79774, CSCus79777, and CSCzv95795.
How severe is CVE-2015-6321?
Severity scoring for CVE-2015-6321 is pending analysis. The EPSS model estimates a 2.76% probability of exploitation in the next 30 days.
How do I fix CVE-2015-6321?
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.

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Source: NVD / NIST