CVE-2017-3870

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Summary

CVECVE-2017-3870
StatePUBLISHED
Assignercisco
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-03-17 22:59:00 UTC
Updated2025-04-20 01:37:25 UTC
DescriptionA vulnerability in the URL filtering feature of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to bypass a configured URL filter rule. Affected Products: This vulnerability affects all releases prior to the first fixed release of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA), both virtual and hardware appliances, that are configured with URL filters for email scanning. More Information: CSCvc69700. Known Affected Releases: 8.5.3-069 9.1.1-074 9.1.2-010.

Risk And Classification

Primary CVSS: v3.0 5.8 MEDIUM from [email protected]

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Problem Types: CWE-119 | URL Filtering Bypass Vulnerability

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary5.8MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
2.0[email protected]Primary5AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

CVSS v2.0 Breakdown

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

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Cisco Web Security Appliance 8.5.3-069 All All All
Application Cisco Web Security Appliance 9.1.1-074 All All All
Application Cisco Web Security Appliance 9.1.2-010 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na Cisco Web Security Appliance affected Cisco Web Security Appliance Not specified

References

ReferenceSourceLinkTags
Cisco AsyncOS CVE-2017-3870 Remote Security Bypass Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
Cisco Web Security Appliance URL Filtering Bypass Vulnerability af854a3a-2127-422b-91ae-364da2661108 tools.cisco.com Vendor Advisory
Cisco Web Security Appliance Input Validation Flaw Lets Remote Users Bypass URL Filters - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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