The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS 12.0 through 12.4 and 15.0 through 15.6 and IOS XE 2.2 through 3.17 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. All devices that have enabled SNMP and have not explicitly excluded the affected MIBs or OIDs should be considered vulnerable. Cisco Bug IDs: CSCve60402.
Published 2017-07-17 21:29:00
Updated 2024-07-24 14:25:15
View at NVD,   CVE.org
Vulnerability category: OverflowExecute code

Products affected by CVE-2017-6737

  • Cisco » IOS
    Versions from including (>=) 12.0 and up to, including, (<=) 12.4
    cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
  • Cisco » IOS
    Versions from including (>=) 15.0 and up to, including, (<=) 15.6
    cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
  • Cisco » Ios Xe
    Versions from including (>=) 2.2.0 and up to, including, (<=) 3.17.0
    cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*

CVE-2017-6737 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:
Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability
CISA required action:
Apply updates per vendor instructions.
CISA description:
The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE contains a vulnerability that could allow an authenticated, remote attacker to remotely execute code.
Notes:
https://nvd.nist.gov/vuln/detail/CVE-2017-6737
Added on 2022-03-03 Action due date 2022-03-24

Exploit prediction scoring system (EPSS) score for CVE-2017-6737

1.90%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 89 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2017-6737

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
9.0
HIGH AV:N/AC:L/Au:S/C:C/I:C/A:C
8.0
10.0
NIST
8.8
HIGH CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
2.8
5.9
NIST
8.8
HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
2.8
5.9
NIST 2024-07-24

CWE ids for CVE-2017-6737

  • The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
    Assigned by:
    • nvd@nist.gov (Primary)
    • ykramarz@cisco.com (Secondary)

References for CVE-2017-6737

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