Home/CVE/Cisco IOS, IOS XR, and IOS XE IKEv1 Information Disclosure Vulnerability
CVE

CVE-2016-6415

Cisco IOS, IOS XR, and IOS XE IKEv1 Information Disclosure Vulnerability

The server IKEv1 implementation in Cisco IOS 12.2 through 12.4 and 15.0 through 15.6, IOS XE through 3.18S, IOS XR 4.3.x and 5.0.x through 5.2.x, and PIX before 7.0 allows remote attackers to obtain sensitive information from device memory via a Security Association (SA) negotiation request, aka Bug IDs CSCvb29204 and CSCvb36055 or BENIGNCERTAIN.

HIGH · CVSS 7.5 ⚠ CISA KEV EPSS 0.92676
Act now
  • Listed on CISA KEV (known exploited in the wild)
  • SSVC exploitation status: active
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 0% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬢

Required Remediation

Apply updates per vendor instructions.

⬡

Weakness Classification

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
▤

Affected Products & Versions

5
cisco ios>= 12.2 and <= 12.4
cisco ios>= 15.0 and <= 15.6
cisco ios xe<= 3.18s
cisco ios xr>= 4.3.0 and <= 4.3.4
cisco ios xr>= 5.0.0 and < 5.3.0
⚠

Public Exploits & PoCs

1
remoteCisco IOS 12.2 < 12.4 / 15.0 < 15.6 - Security Association Negotiation Request Device Memory2017-03-17
◈

Detection Rules (IDS/IPS)

4
et-openET EXPLOIT Possible Cisco IKEv1 Information Disclosure Vulnerability CVE-2016-6415attempted-user
snort-communitySERVER-OTHER Cisco IOS Group-Prime memory disclosure exfiltration attemptattempted-recon
snort-communitySERVER-OTHER Cisco IOS Group-Prime MD5 memory disclosure attemptattempted-recon
snort-communitySERVER-OTHER Cisco IOS Group-Prime SHA memory disclosure attemptattempted-recon
Open rulesets (ET Open, Snort Community, abuse.ch) link to source. Commercial rulesets are reference-only.
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · psirt@cisco.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD19 Sep 2016 · 01:59 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
active
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
cisaKEV-CVE-2016-6415
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160916-ikev1Vendor Advisory
http://www.securityfocus.com/bid/93003Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1036841Third Party AdvisoryVDB Entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-6415US Government Resource
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