CVE-2015-6321

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Summary

CVECVE-2015-6321
StatePUBLISHED
Assignercisco
Source PriorityCVE Program / NVD first with legacy fallback
Published2015-11-06 03:59:03 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionCisco 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.

Risk And Classification

Primary CVSS: v2.0 7.8 from [email protected]

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

Problem Types: CWE-399 | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Cisco Content Security Management Appliance 7.8.0-328 All All All
Application Cisco Content Security Management Appliance 7.8.1-001 All All All
Application Cisco Content Security Management Appliance 7.9.0-201 All All All
Application Cisco Content Security Management Appliance 7.9.2-116 All All All
Application Cisco Content Security Management Appliance 8.0.1-031 All All All
Application Cisco Content Security Management Appliance 8.1.0-001 All All All
Application Cisco Content Security Management Appliance 8.1.1-033 All All All
Application Cisco Content Security Management Appliance 8.1.2-000 All All All
Application Cisco Content Security Management Appliance 8.2.0-238 All All All
Application Cisco Content Security Management Appliance 8.3.0-350 All All All
Application Cisco Content Security Management Appliance 8.3.5-061 All All All
Application Cisco Content Security Management Appliance 8.3.6-014 All All All
Application Cisco Content Security Management Appliance 8.3.7-010 All All All
Application Cisco Content Security Management Appliance 8.4.0-150 All All All
Application Cisco Content Security Management Appliance 9.0.0-073 All All All
Application Cisco Content Security Management Appliance 9.1.0-004 All All All
Application Cisco Email Security Appliance 7.6.1-000 All All All
Application Cisco Email Security Appliance 7.6.3-000 All All All
Application Cisco Email Security Appliance 7.7.0-000 All All All
Application Cisco Email Security Appliance 7.7.1-000 All All All
Application Cisco Email Security Appliance 7.8.0-311 All All All
Application Cisco Email Security Appliance 8.5.6-052 All All All
Application Cisco Email Security Appliance 8.6.0-011 All All All
Application Cisco Email Security Appliance 8.9.1-000 All All All
Application Cisco Email Security Appliance 8.9.2-032 All All All
Application Cisco Email Security Appliance 9.0.0-212 All All All
Application Cisco Email Security Appliance 9.0.5-000 All All All
Application Cisco Email Security Appliance 9.1.0-011 All All All
Application Cisco Email Security Appliance 9.4.4-000 All All All
Application Cisco Email Security Appliance 9.5.0-000 All All All
Application Cisco Web Security Appliance 5.6.0-623 All All All
Application Cisco Web Security Appliance 6.0.0-000 All All All
Application Cisco Web Security Appliance 7.5.0-000 All All All
Application Cisco Web Security Appliance 7.5.0-825 All All All
Application Cisco Web Security Appliance 7.5.1-000 All All All
Application Cisco Web Security Appliance 7.5.2-000 All All All
Application Cisco Web Security Appliance 7.7.0-000 All All All
Application Cisco Web Security Appliance 7.7.1-000 All All All
Application Cisco Web Security Appliance 8.0.0-000 All All All
Application Cisco Web Security Appliance 8.5.0.000 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Cisco Web Security Appliance AsyncOS TCP Flood Handling Lets Remote Users Consume Excessive Memory Resources - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
Cisco Email Security Appliance TCP Flood Handling Lets Remote Users Consume Excessive Memory Resources - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
Cisco AsyncOS TCP Flood Denial of Service Vulnerability af854a3a-2127-422b-91ae-364da2661108 tools.cisco.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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