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8.8High KEV

CVE-2017-6742Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability

Cisco Cisco IOS XE Software; IntelliShield Universal Product Published: (9 years ago)

Known exploited — Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability

CISA confirmed this vulnerability is used in real attacks on 19.04.2023. Remediation deadline for US federal agencies: 10.05.2023.

Required action: Apply updates per vendor instructions. https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp; https://nvd.nist.gov/vuln/detail/CVE-2017-6742

Description

A vulnerability in the SNMP implementation of could allow an authenticated, remote attacker to cause a reload of the affected system or to remotely execute code. An attacker could exploit this vulnerability by sending a crafted SNMP packet to the affected device.  The vulnerability is due to a buffer overflow in the affected code area. The vulnerability affects all versions of SNMP (versions 1, 2c, and 3). The attacker must know the SNMP read only community string (SNMP version 2c or earlier) or the user credentials (SNMPv3). An exploit could allow the attacker to execute arbitrary code and obtain full control of the system or to cause a reload of the affected system. Only traffic directed to the affected system can be used to exploit this vulnerability.

Weakness (CWE): CWE-119

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

VendorProductVersions
Cisco Cisco IOS XE Software 3.7.0S, 3.7.1S, 3.7.2S, 3.7.3S, 3.7.4S, 3.7.5S, 3.7.6S, 3.7.7S, 3.7.4aS, 3.7.2tS, 3.7.0bS, 3.8.0S, 3.8.1S, 3.8.2S, 3.9.1S, 3.9.0S, 3.9.2S, 3.9.0aS, 3.11.1S, 3.11.2S, 3.11.0S, 3.11.3S, 3.11.4S, 3.12.0S, 3.12.1S, 3.12.2S, 3.12.3S, 3.12.0aS, 3.12.4S, 3.13.0S, 3.13.1S, 3.13.2S, 3.13.3S, 3.13.4S, 3.13.5S, 3.13.2aS, 3.13.0aS, 3.13.5aS, 3.13.6S, 3.13.7S, 3.13.6aS, 3.13.7aS, 3.6.3E, 3.6.6E, 3.6.5bE, 3.14.0S, 3.14.1S, 3.14.2S, 3.14.3S, 3.14.4S, 3.15.0S, 3.15.1S, 3.15.2S, 3.15.1cS, 3.15.3S, 3.15.4S, 3.7.4E, 3.7.5E, 3.16.0S, 3.16.1S, 3.16.1aS, 3.16.2S, 3.16.0cS, 3.16.3S, 3.16.2bS, 3.16.4aS, 3.16.4bS, 3.1
cisco ios 12.0 – ≤ 12.4
cisco ios xe 2.2.0 – ≤ 3.17
IntelliShield Universal Product N/A

References and patches

CPE matches (NVD) (3)
  • cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:* ≥ 12.0 ≤ 12.4
  • cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:* ≥ 15.0 ≤ 15.6
  • cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:* ≥ 2.2.0 ≤ 3.17

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