CVE-2016-6415
Cisco — Cisco IOS, IOS XR, and IOS XE IKEv1 Information Disclosure Vulnerability
Cisco · CWE-200 — Exposure of sensitive information · in CISA KEV since 2023-05-19
EVRS 81 of 100 Urgent
Patch This Cycle
Rank 562 of 2,960 tracked
Why it scores 81
Evidence available: 6 of 7 signalsListed in the CISA KEV catalog, and an EPSS probability of 0.877.
- CISA KEVApplied
- RansomwareDid not apply
- Vendor exploitationDid not apply
- EPSSApplied
- Microsoft Exploitability IndexNot applicable
- Pre-patch disclosureNo data
- KEV recencyDid not apply
- CVSSApplied
The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data
Fix
Patch or fixed version identifiedCISA required action
Fixed in
ios: update to a version newer than 12.4 | ios: update to a version newer than 15.6 | ios xe: update to a version newer than 3.18s | ios xr: update to a version newer than 4.3.4 | ios xr: update to 5.3.0 or later
Affected versions
- ios
>= 12.2 <= 12.4>= 15.0 <= 15.6 - ios xe
<= 3.18s - ios xr
>= 4.3.0 <= 4.3.4>= 5.0.0 < 5.3.0
Remediation
Apply updates per vendor instructions.
Fixed versions from NVD.
Evidence
Each value with its source| Measure | Value | Source |
|---|---|---|
| CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. | 7.5 | NVD |
| FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. | 0.877 (99.76th pctl) | FIRST EPSS |
| Actively exploitedWhether a source of record has confirmed attacks using it in the wild. | Confirmed | CISA KEV |
| Ransomware campaign useWhether CISA has seen ransomware operators use it. | Unknown or none | CISA KEV |
| CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. | 2023-06-09 · KEV since 2023 · listed over a year | CISA KEV |
| Public exploit moduleA module existing is not the same as active exploitation. | Public module exists | Metasploit |
| EUVD cross-referenceENISA's record: CVSS 7.5 (v3.1), assigned by cisco. | Listed | ENISA EUVD |
Description
NVDThe 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.
What CISA says to do
Public module
Metasploit lists a public normal-rank module for this CVE: Cisco IKE Information Disclosure (scanner/ike/cisco_ike_benigncertain). A module existing is not the same as active exploitation; see metasploit.com.