CVE-2016-6366
Confirmed PUBLISHEDBuffer overflow in Cisco Adaptive Security Appliance (ASA) Software through 9.4.2.3 on ASA 5500, ASA 5500-X, ASA Services Module, ASA 1000V, ASAv,...
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
Buffer overflow in Cisco Adaptive Security Appliance (ASA) Software through 9.4.2.3 on ASA 5500, ASA 5500-X, ASA Services Module, ASA 1000V, ASAv, Firepower 9300 ASA Security Module, PIX, and FWSM devices allows remote authenticated users to execute arbitrary code via crafted IPv4 SNMP packets, aka Bug ID CSCva92151 or EXTRABACON.
- CVE Published
- Aug 18, 2016
- Exploitation Reported
- May 24, 2022
- CVSS
- 8.8 High
- EPSS
- —
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| n/a |
n/a
|
n/a |
Affected |
CVE References
- 20160817 Cisco Adaptive Security Appliance SNMP Remote Code Execution Vulnerability tools.cisco.com · Vendor Advisory http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/...
- 40258 exploit-db.com · Exploit https://www.exploit-db.com/exploits/40258/
- 92521 securityfocus.com · VDB Entry http://www.securityfocus.com/bid/92521
- 1036637 securitytracker.com · VDB Entry http://www.securitytracker.com/id/1036637
- GitHub — offensive-security/exploit-database-bin-sploits github.com · CVE Record https://github.com/offensive-security/exploit-database-bin-sploits/ra...
Show 3 more references
- blogs.cisco.com/security/shadow-brokers blogs.cisco.com · CVE Record http://blogs.cisco.com/security/shadow-brokers
- tools.cisco.com/security/center/viewErp.x tools.cisco.com · CVE Record http://tools.cisco.com/security/center/viewErp.x?alertId=ERP-56516
- zerosum0x0.blogspot.com/2016/09/reverse-engineering-cisco-asa-for.html zerosum0x0.blogspot.com · CVE Record https://zerosum0x0.blogspot.com/2016/09/reverse-engineering-cisco-asa...
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CISA First | 2022-05-24 00:00 UTC |
No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:M/Au:S/C:C/I:C/A:C
Exploitation Status
Exploited in the wild
Recorded 2022-05-24 00:00:00 UTC · CISA
Proof of concept available
Recorded 2016-09-20 23:19:02 UTC · GitHub
Weaknesses (CWE)
-
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
github · Created 2016-09-20 23:19:02 UTC · 159 stars
Public repository for improvements to the EXTRABACON exploit
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
00:00 UTC about 4 years ago00:00 UTC · about 4 years ago
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
23:19 UTC almost 10 years ago23:19 UTC · almost 10 years ago
Public PoC available
Public proof-of-concept code published
-
18:00 UTC almost 10 years ago18:00 UTC · almost 10 years ago
CVE published
Vulnerability disclosed publicly
-
00:00 UTC almost 10 years ago00:00 UTC · almost 10 years ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2016-6366
{
"cve_id": "CVE-2016-6366",
"title": "Buffer overflow in Cisco Adaptive Security Appliance (ASA) Software through 9...",
"affected_vendor": "Cisco",
"affected_product": "Adaptive Security Appliance (ASA) Software",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 8.8,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}