CVE-2017-6736
Scores
EPSS
Percentile: 89.0%
CVSS
CVSS Score: 8.8/10
All CVSS Scores
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Network (N)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Privileges Required
Low (L)
Describes the level of privileges an attacker must possess
User Interaction
None (N)
Captures the requirement for a human user participation
Scope
Unchanged (U)
Determines if a successful attack impacts components beyond the vulnerable component
Confidentiality Impact
High (H)
Measures the impact to the confidentiality of information
Integrity Impact
High (H)
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
High (H)
Measures the impact to the availability of the impacted component
Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Network (N)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Authentication
Single
Describes the level of privileges an attacker must possess
Confidentiality Impact
Complete
Measures the impact to the confidentiality of information
Integrity Impact
Complete
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
Complete
Measures the impact to the availability of the impacted component
Description
The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE Software contains multiple vulnerabilities that could allow an authenticated, remote attacker to remotely execute code on an affected system or cause an affected system to reload. An attacker could exploit these vulnerabilities by sending a crafted SNMP packet to an affected system via IPv4 or IPv6. Only traffic directed to an affected system can be used to exploit these vulnerabilities.
The vulnerabilities are due to a buffer overflow condition in the SNMP subsystem of the affected software. The vulnerabilities affect all versions of SNMP - Versions 1, 2c, and 3. To exploit these vulnerabilities via SNMP Version 2c or earlier, the attacker must know the SNMP read-only community string for the affected system. To exploit these vulnerabilities via SNMP Version 3, the attacker must have user credentials for the affected system. A successful exploit could allow the attacker to execute arbitrary code and obtain full control of the affected system or cause the affected system to reload.
Customers are advised to apply the workaround as contained in the Workarounds section below. Fixed software information is available via the Cisco IOS Software Checker. All devices that have enabled SNMP and have not explicitly excluded the affected MIBs or OIDs should be considered vulnerable.
There are workarounds that address these vulnerabilities.
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Sources
CWEs
Related Vulnerabilities
Exploits
Exploit ID: CVE-2017-6736
Source: cisa
URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Vulnerable Software (2)
Type: Configuration
Vendor: *
Product: ios
Operating System: * * *
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*", "versionEndIncluding": "12.4", "versionStartIncluding": "12.0", "vulnerable": true }, { ...
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*", "versionEndIncluding": "12.4", "versionStartIncluding": "12.0", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*", "versionEndIncluding": "15.6", "versionStartIncluding": "15.0", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*", "versionEndIncluding": "3.17", "versionStartIncluding": "2.2.0", "vulnerable": true } ], "operator": "OR"}
Source: nvd
Type: Configuration
Vendor: *
Product: ios_xe
Operating System: * * *
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*", "versionEndIncluding": "12.4", "versionStartIncluding": "12.0", "vulnerable": true }, { ...
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*", "versionEndIncluding": "12.4", "versionStartIncluding": "12.0", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*", "versionEndIncluding": "15.6", "versionStartIncluding": "15.0", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*", "versionEndIncluding": "3.17", "versionStartIncluding": "2.2.0", "vulnerable": true } ], "operator": "OR"}
Source: nvd