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8.8 High Exploited

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

Active exploitation observed

· CISA KEV catalogue
Required action Apply updates per vendor instructions.
Ransomware campaigns Not observed so far
Weakness CWE-119

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.

Affected products and versions

Product Affected versions Fixed in
Cisco IOS XE Software 16.5 16.5.1b → 16.5.1 No fix stated
Cisco IOS XE Software 16.4 16.4.1 → 16.4.2 No fix stated
Cisco IOS XE Software 16.3 16.3.1a → 16.3.4 No fix stated
Cisco IOS XE Software 16.2 16.2.1 → 16.2.2 No fix stated
Cisco IOS XE Software 3.18 3.18.0S → 3.18.2aSP No fix stated
Cisco IOS XE Software 3.17 3.17.0S → 3.17.3S No fix stated
Cisco IOS XE Software 3.16 3.16.0S → 3.16.5S No fix stated
Cisco IOS XE Software 3.15 3.15.0S → 3.15.4S No fix stated
Cisco IOS XE Software 3.14 3.14.0S → 3.14.4S No fix stated
Show the 8 other branches
Product Affected versions Fixed in
Cisco IOS XE Software 3.13 3.13.0S → 3.13.7aS No fix stated
Cisco IOS XE Software 3.12 3.12.0S → 3.12.4S No fix stated
Cisco IOS XE Software 3.11 3.11.0S → 3.11.4S No fix stated
Cisco IOS XE Software 3.9 3.9.0S → 3.9.2S No fix stated
Cisco IOS XE Software 3.8 3.8.0S → 3.8.2S No fix stated
Cisco IOS XE Software 3.7 3.7.0S → 3.7.7S No fix stated
Cisco IOS XE Software 3.6 3.6.3E → 3.6.6E No fix stated
Universal Product Versions not published

References

Timeline

  1. Published
  2. Added to the KEV catalogue
  3. Last modified

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