Improper input validation in Cisco iOS
CVE-2016-1409
The Neighbor Discovery (ND) protocol implementation in the IPv6 stack in Cisco IOS XE 2.1 through 3.17S, IOS XR 2.0.0 through 5.3.2, and NX-OS allows remote attackers to cause a denial of service (packet-processing outage) via crafted ND messages, aka Bug ID CSCuz66542, as exploited in the wild in May 2016.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.039 (89.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 89.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.039 · newest: 0.039 · change: 0.000
Affected products
- Cisco iOS — versions 12.2(2)xf2, 12.2\(8\)yy1, 12.4(15)t8
- Cisco iOS Xe — versions 2.1.0, 2.1.1, 2.1.2
- Cisco iOS Xr — versions 2.0.0, 3.0.0, 3.0.1
- Cisco Nx-Os — versions 5.0(3)u1(1d), 6.0(2)u3(2), 5.0(3)u3(2a)
Weakness classification (CWE)
Public proof-of-concept exploits
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160525… (vendor-advisory, Vendor Advisory)
- www.securitytracker.com/id/1035964 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securityfocus.com/bid/90872 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securitytracker.com/id/1035965 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securitytracker.com/id/1035962 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securitytracker.com/id/1036651 (vdb-entry)
- www.huawei.com/en/psirt/security-advisories/huawei-sa-20160824-01-ipv6-en (Third Party Advisory)
- www.securitytracker.com/id/1035963 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2016-1409?
- CVE-2016-1409 is a high-severity vulnerability in Cisco iOS, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2016-05-29.
- How severe is CVE-2016-1409?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2016-1409 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.