Cisco NX-OS up to 7.3(1)N1(0.1) on Nexus 7000 Access Control List input validation
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.1 | $0-$5k | 0.00 |
A vulnerability was found in Cisco NX-OS up to 7.3(1)N1(0.1) on Nexus 7000 (Router Operating System). It has been declared as critical. This vulnerability affects an unknown functionality of the component Access Control List. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:
An Access-Control Filtering Mechanisms Bypass vulnerability in certain access-control filtering mechanisms on Cisco Nexus 7000 Series Switches could allow an unauthenticated, remote attacker to bypass defined traffic configured within an access control list (ACL) on the affected system. More Information: CSCtz59354. Known Affected Releases: 5.2(4) 6.1(3)S5 6.1(3)S6 6.2(1.121)S0 7.2(1)D1(1) 7.3(0)ZN(0.161) 7.3(1)N1(0.1). Known Fixed Releases: 7.3(0)D1(1) 6.2(2) 6.1(5) 8.3(0)KMT(0.24) 8.3(0)CV(0.337) 7.3(1)N1(1) 7.3(0)ZN(0.210) 7.3(0)ZN(0.177) 7.3(0)ZD(0.194) 7.3(0)TSH(0.99) 7.3(0)SC(0.14) 7.3(0)RSP(0.7) 7.3(0)N1(1) 7.3(0)N1(0.193) 7.3(0)IZN(0.13) 7.3(0)IB(0.102) 7.3(0)GLF(0.44) 7.3(0)D1(0.178) 7.1(0)D1(0.14) 7.0(3)ITI2(1.6) 7.0(3)ISH1(2.13) 7.0(3)IFD6(0.78) 7.0(3)IFD6(0) 7.0(3)IDE6(0.12) 7.0(3)IDE6(0) 7.0(3)I2(1) 7.0(3)I2(0.315) 7.0(1)ZD(0.3) 7.0(0)ZD(0.84) 6.2(1.149)S0 6.2(0.285) 6.1(5.32)S0 6.1(4.97)S0 6.1(2.30)S0.
The bug was discovered 03/15/2017. The weakness was published 03/17/2017 with Cisco as cisco-sa-20170315-cns as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability was named CVE-2017-3875 since 12/21/2016. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.
The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $25k-$100k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316093 (Cisco Nexus 7000 Series Switches Access-Control Filtering Mechanisms Bypass Vulnerability (cisco-sa-20170315-cns)).
Upgrading to version 7.3(0)D1(1), 6.2(2), 6.1(5), 8.3(0)KMT(0.24), 8.3(0)CV(0.337), 7.3(1)N1(1), 7.3(0)ZN(0.210), 7.3(0)ZN(0.177), 7.3(0)ZD(0.194), 7.3(0)TSH(0.99), 7.3(0)SC(0.14), 7.3(0)RSP(0.7), 7.3(0)N1(1), 7.3(0)N1(0.193), 7.3(0)IZN(0.13) or 7.3(0)IB(0.102) eliminates this vulnerability.
Similar entries are available at 98262 and 98263.
Product
Type
Vendor
Name
Version
License
Support
- end of life (old version)
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.3VulDB Meta Temp Score: 6.2
VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 5.3
NVD Vector: 🔍
CVSSv2
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Input validationCWE: CWE-20
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
OpenVAS ID: 103402
OpenVAS Name: Cisco Nexus 7000 Series Switches Access-Control Filtering Mechanisms Bypass Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: NX-OS 7.3(0)D1(1)/6.2(2)/6.1(5)/8.3(0)KMT(0.24)/8.3(0)CV(0.337)/7.3(1)N1(1)/7.3(0)ZN(0.210)/7.3(0)ZN(0.177)/7.3(0)ZD(0.194)/7.3(0)TSH(0.99)/7.3(0)SC(0.14)/7.3(0)RSP(0.7)/7.3(0)N1(1)/7.3(0)N1(0.193)/7.3(0)IZN(0.13)/7.3(0)IB(0.102)
Timeline
12/21/2016 🔍03/15/2017 🔍
03/15/2017 🔍
03/17/2017 🔍
03/17/2017 🔍
03/18/2017 🔍
06/06/2020 🔍
Sources
Vendor: cisco.comAdvisory: cisco-sa-20170315-cns
Organization: Cisco
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2017-3875 (🔍)
SecurityFocus: 96930 - Cisco Nexus 7000 Series Switches CVE-2017-3875 Security Bypass Vulnerability
See also: 🔍
Entry
Created: 03/18/2017 02:58Updated: 06/06/2020 20:11
Changes: 03/18/2017 02:58 (71), 06/06/2020 20:11 (5)
Complete: 🔍
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