CVE-2018-0353
HIGHEPSS 89th pctlDescription
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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Exploit Intelligence
Elevated risk: more likely to be exploited than 89% of all known CVEs.
References
Related Vulnerabilities
Other CWE-254 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2016-0161 | Medium | 6.5 | 69% | - | - |
| CVE-2016-2296 | Critical | 9.4 | 64% | - | - |
| CVE-2015-1793 | Medium | 6.5 | 62% | - | Fix |
| CVE-2016-2118 | High | 7.5 | 37% | - | Fix |
| CVE-2016-3238 | High | 8.1 | 35% | - | - |
| CVE-2016-3198 | Medium | 6.5 | 32% | - | - |
Common questions
How do I fix CVE-2018-0353?
No published fix for CVE-2018-0353 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2018-0353 being actively exploited?
Not that we know of. CVE-2018-0353 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 3.9% is the estimated probability that it will be exploited in the next 30 days. That is higher than 89% of all scored CVEs.
How severe is CVE-2018-0353?
CVE-2018-0353 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.