Overview
- Description
- A vulnerability in the web proxy functionality of Cisco AsyncOS Software for Cisco Web Security Appliances could allow an unauthenticated, remote attacker to exhaust system memory and cause a denial of service (DoS) condition on an affected system. The vulnerability exists because the affected software improperly manages memory resources for TCP connections to a targeted device. An attacker could exploit this vulnerability by establishing a high number of TCP connections to the data interface of an affected device via IPv4 or IPv6. A successful exploit could allow the attacker to exhaust system memory, which could cause the system to stop processing new connections and result in a DoS condition. System recovery may require manual intervention. Cisco Bug IDs: CSCvf36610.
- Source
- ykramarz@cisco.com
- NVD status
- Modified
Risk scores
CVSS 3.0
- Type
- Primary
- Base score
- 8.6
- Impact score
- 4
- Exploitability score
- 3.9
- Vector string
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- Severity
- HIGH
CVSS 2.0
- Type
- Primary
- Base score
- 7.8
- Impact score
- 6.9
- Exploitability score
- 10
- Vector string
- AV:N/AC:L/Au:N/C:N/I:N/A:C
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:cisco:web_security_appliance:9.1.1-074:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "35F4D6C1-3493-400B-AAE8-E2C00AE53BE2"
},
{
"criteria": "cpe:2.3:a:cisco:web_security_appliance:9.1.2-010:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A74AFB73-5414-49C8-8209-9392E5406806"
},
{
"criteria": "cpe:2.3:a:cisco:web_security_appliance:9.1.2-022:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1A56C459-EC60-43EC-A534-114909CCC369"
},
{
"criteria": "cpe:2.3:a:cisco:web_security_appliance:9.1.2-039:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A59C67DF-D4A9-4B3E-98E2-A95604F75952"
},
{
"criteria": "cpe:2.3:a:cisco:web_security_appliance:10.1.0-204:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "AC71F9F5-B0BA-4415-A4C8-9D0B15732A54"
},
{
"criteria": "cpe:2.3:a:cisco:web_security_appliance:10.1.1-235:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "4BA9660A-C242-4080-9B38-A819A3BBCF70"
},
{
"criteria": "cpe:2.3:a:cisco:web_security_appliance:10.5.1-270:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "3C2F79DB-DA5F-47E1-9FE1-EF9114004BB2"
},
{
"criteria": "cpe:2.3:a:cisco:web_security_appliance:10.5.1-296:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "AC67BB76-C4E8-4AC2-B5F5-4FB36336273D"
},
{
"criteria": "cpe:2.3:a:cisco:web_security_appliance:10.5.2-042:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "11E7DC30-5299-46A8-A82A-7DFB2E6608AE"
},
{
"criteria": "cpe:2.3:a:cisco:web_security_appliance:11.0.0-641:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C4B430E9-EBFF-4B90-9844-D9758FA626D1"
}
],
"operator": "OR"
}
]
}
]