Vulnerability Name:

CVE-2019-1741 (CCN-158777)

Assigned:2018-12-06
Published:2019-03-27
Updated:2020-10-08
Summary:A vulnerability in the Cisco Encrypted Traffic Analytics (ETA) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to a logic error that exists when handling a malformed incoming packet, leading to access to an internal data structure after it has been freed. An attacker could exploit this vulnerability by sending crafted, malformed IP packets to an affected device. A successful exploit could allow the attacker to cause an affected device to reload, resulting in a DoS condition.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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): Unchanged
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-416
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2019-1741

Source: BID
Type: Third Party Advisory, VDB Entry
107614

Source: XF
Type: UNKNOWN
cisco-cve20191741-dos(158777)

Source: CCN
Type: Cisco Security Advisory cisco-sa-20190327-eta-dos
Cisco IOS XE Software Encrypted Traffic Analytics Denial of Service Vulnerability

Source: CISCO
Type: Patch, Vendor Advisory
20190327 Cisco IOS XE Software Encrypted Traffic Analytics Denial of Service Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/o:cisco:ios_xe:3.2.0ja:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.6.1:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.6.2:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.6.3:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.7.1:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.7.1a:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.7.1b:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.8.1:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.8.1a:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.8.1b:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.8.1c:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.8.1d:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.8.1e:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.8.1s:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco ios xe 3.2.0ja
    cisco ios xe 16.6.1
    cisco ios xe 16.6.2
    cisco ios xe 16.6.3
    cisco ios xe 16.7.1
    cisco ios xe 16.7.1a
    cisco ios xe 16.7.1b
    cisco ios xe 16.8.1
    cisco ios xe 16.8.1a
    cisco ios xe 16.8.1b
    cisco ios xe 16.8.1c
    cisco ios xe 16.8.1d
    cisco ios xe 16.8.1e
    cisco ios xe 16.8.1s