Vulnerability Name:

CVE-2018-0157 (CCN-140909)

Assigned:2017-11-27
Published:2018-03-28
Updated:2019-12-03
Summary:A vulnerability in the Zone-Based Firewall code of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a device to reload. The vulnerability is due to the way fragmented packets are handled in the firewall code. An attacker could exploit this vulnerability by sending fragmented IP Version 4 or IP Version 6 packets through an affected device. An exploit could allow the attacker to cause the device to crash, resulting in a denial of service (DoS) condition. The following releases of Cisco IOS XE Software are vulnerable: Everest-16.4.1, Everest-16.4.2, Everest-16.5.1, Everest-16.5.1b, Everest-16.6.1, Everest-16.6.1a. Cisco Bug IDs: CSCvf60296.
CVSS v3 Severity:8.6 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H)
7.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
8.6 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H)
7.5 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:7.8 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-noinfo
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2018-0157

Source: BID
Type: Third Party Advisory, VDB Entry
103561

Source: CCN
Type: BID-103561
Cisco IOS XE Software CVE-2018-0157 Denial of Service Vulnerability

Source: SECTRACK
Type: Third Party Advisory, VDB Entry
1040593

Source: XF
Type: UNKNOWN
cisco-fwip-cve20180157-dos(140909)

Source: CCN
Type: Cisco Security Advisory cisco-sa-20180328-fwip
Cisco IOS XE Software Zone-Based Firewall IP Fragmentation Denial of Service Vulnerability

Source: CONFIRM
Type: Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-fwip

Vulnerable Configuration:Configuration 1:
  • cpe:/o:cisco:ios_xe:16.4.1:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.4.2:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.5.1:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.5.1b:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.6.1:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.6.1a:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:cisco:ios_xe:16.4.1:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.4.2:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.5.1:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.5.1b:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.6.1:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.6.1a:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco ios xe 16.4.1
    cisco ios xe 16.4.2
    cisco ios xe 16.5.1
    cisco ios xe 16.5.1b
    cisco ios xe 16.6.1
    cisco ios xe 16.6.1a
    cisco ios xe 16.4.1
    cisco ios xe 16.4.2
    cisco ios xe 16.5.1
    cisco ios xe 16.5.1b
    cisco ios xe 16.6.1
    cisco ios xe 16.6.1a