Vulnerability Name:

CVE-2019-1869 (CCN-162761)

Assigned:2018-12-06
Published:2019-06-19
Updated:2019-10-09
Summary:A vulnerability in the internal packet-processing functionality of the Cisco StarOS operating system running on virtual platforms could allow an unauthenticated, remote attacker to cause an affected device to stop processing traffic, resulting in a denial of service (DoS) condition. The vulnerability is due to a logic error that may occur under specific traffic conditions. An attacker could exploit this vulnerability by sending a series of crafted packets to an affected device. A successful exploit could allow the attacker to prevent the targeted service interface from receiving any traffic, which would lead to a DoS condition on the affected interface. The device may have to be manually reloaded to recover from exploitation of this vulnerability.
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:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
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-824
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2019-1869

Source: BID
Type: Third Party Advisory, VDB Entry
108853

Source: XF
Type: UNKNOWN
cisco-cve20191869-dos(162761)

Source: CCN
Type: Cisco Security Advisory cisco-sa-20190619-staros-asr-dos
Cisco StarOS Denial of Service Vulnerability

Source: CISCO
Type: Vendor Advisory
20190619 Cisco StarOS Denial of Service Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/o:cisco:staros:*:*:*:*:*:*:*:* (Version >= 21.6 and < 21.6.13)
  • OR cpe:/o:cisco:staros:*:*:*:*:*:*:*:* (Version >= 21.6b and < 21.6b.16)
  • OR cpe:/o:cisco:staros:*:*:*:*:*:*:*:* (Version >= 21.7 and < 21.7.11)
  • OR cpe:/o:cisco:staros:*:*:*:*:*:*:*:* (Version >= 21.8 and < 21.8.10)
  • OR cpe:/o:cisco:staros:*:*:*:*:*:*:*:* (Version >= 21.9 and < 21.9.7)
  • OR cpe:/o:cisco:staros:*:*:*:*:*:*:*:* (Version >= 21.10 and < 21.10.2)
  • OR cpe:/o:cisco:staros:*:*:*:*:*:*:*:* (Version >= 21.11 and < 21.11.1)
  • AND
  • cpe:/h:cisco:asr_5000:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:asr_5500:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:asr_5700:-:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:cisco:staros:*:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco staros *
    cisco staros *
    cisco staros *
    cisco staros *
    cisco staros *
    cisco staros *
    cisco staros *
    cisco asr 5000 -
    cisco asr 5500 -
    cisco asr 5700 -
    cisco staros *