CVE-2018-0353 - A vulnerability in traffic-monitoring functions in Cisco Web Security Appliance (WSA) could allow an

CVE-2018-0353

Summary

A vulnerability in traffic-monitoring functions in Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to circumvent Layer 4 Traffic Monitor (L4TM) functionality and bypass security protections. The vulnerability is due to a change in the underlying operating system software that is responsible for monitoring affected traffic. An attacker could exploit this vulnerability by sending crafted IP packets to an affected device. A successful exploit could allow the attacker to pass traffic through the device, which the WSA was configured to deny. This vulnerability affects both IPv4 and IPv6 traffic. This vulnerability affects Cisco AsyncOS versions for WSA on both virtual and hardware appliances running any release of the 10.5.1, 10.5.2, or 11.0.0 WSA Software. The WSA is vulnerable if it is configured for L4TM. Cisco Bug IDs: CSCvg78875.

References

Vulnerable Configurations

cpe:2.3:a:cisco:web_security_appliance:10.5.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:web_security_appliance:10.5.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:web_security_appliance:10.5.1-296:*:*:*:*:*:*:*
cpe:2.3:a:cisco:web_security_appliance:10.5.1-296:*:*:*:*:*:*:*
cpe:2.3:a:cisco:web_security_appliance:10.5.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:web_security_appliance:10.5.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:web_security_appliance:11.0.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:web_security_appliance:11.0.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:web_security_appliance:11.5.0-fcs-442:*:*:*:*:*:*:*
cpe:2.3:a:cisco:web_security_appliance:11.5.0-fcs-442:*:*:*:*:*:*:*

CVSS

Base:	5.0 (as of 09-10-2019 - 23:31)
Impact:
Exploitability:

CWE

NVD-CWE-noinfo

CAPEC

Access

Vector	Complexity	Authentication
NETWORK	LOW	NONE

Impact

Confidentiality	Integrity	Availability
PARTIAL	NONE	NONE

cvss-vector via4

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

refmap via4

bid	104417
confirm	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180606-wsa
sectrack	1041081

Last major update

09-10-2019 - 23:31

Published

07-06-2018 - 12:29

Last modified

09-10-2019 - 23:31