Improper input validation in Cisco Adaptive Security Appliance Software
CVE-2017-6770
Cisco IOS 12.0 through 15.6, Adaptive Security Appliance (ASA) Software 7.0.1 through 9.7.1.2, NX-OS 4.0 through 12.0, and IOS XE 3.6 through 3.18 are affected by a vulnerability involving the Open Shortest Path First (OSPF) Routing Protocol Link State Advertisement (LSA) database. This vulnerability could allow an unauthenticated, remote attacker to take full control of the OSPF Autonomous System (AS) domain routing table, allowing the attacker to intercept or black-hole traffic. The attacker could exploit this vulnerability by injecting crafted OSPF packets. Successful exploitation could cause the targeted router to flush its routing table and propagate the crafted OSPF LSA type 1 update throughout the OSPF AS domain. To exploit this vulnerability, an attacker must accurately determine certain parameters within the LSA database on the target router. This vulnerability can only be triggered by sending crafted unicast or multicast OSPF LSA type 1 packets. No other LSA type packets can trigger this vulnerability. OSPFv3 is not affected by this vulnerability. Fabric Shortest Path First (FSPF) protocol is not affected by this vulnerability. Cisco Bug IDs: CSCva74756, CSCve47393, CSCve47401.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.017 (76.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 76.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000
Affected products
- Cisco Adaptive Security Appliance Software — versions 9.1\(7\)6, 7.0.7.1, 7.2.1.13
- Cisco iOS — versions 12.2(2)xf2, 12.2\(8\)yy1, 12.0\(22\)s2c
- Cisco iOS Xe — versions 3.6.0e, 3.6.1e, 3.6.2e
- Cisco Nx-Os — versions 1.0(1.110a), 5.0(3)u1(1d), 7.3(1)n1(0.1)
- Cisco Nx-Os For Nexus 5500 Platform Switches — versions 7.3(1)n1(1), 7.3\(1\)n1\(1\), base
- Cisco Nx-Os For Nexus 5600 Platform Switches — versions 7.3(1)n1(1), 7.3\(1\)n1\(1\), base
- Cisco Nx-Os For Nexus 7700 Series Switches — versions 8.1(1)(ed), 8.0\(1\)\(ed\), 8.1\(1\)\(ed\)
- Multiple Cisco Products — versions Multiple Cisco Products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securitytracker.com/id/1039005 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securitytracker.com/id/1039006 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securityfocus.com/bid/100005 (VDB Entry, Third Party Advisory, vdb-entry)
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170727… (Vendor Advisory)
- www.securitytracker.com/id/1039007 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2017-6770?
- CVE-2017-6770 is a medium-severity vulnerability in Cisco Adaptive Security Appliance Software, classified under Improper Input Validation. CVSS score: 4.2/10. Published 2017-08-07.
- How severe is CVE-2017-6770?
- Medium severity. CVSS v3 base score is 4.2 out of 10.
- Is CVE-2017-6770 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.