Vulnerability Name:

CVE-2021-1313 (CCN-196126)

Assigned:2020-11-13
Published:2021-02-03
Updated:2022-04-25
Summary:Multiple vulnerabilities in the ingress packet processing function of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
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-401
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2021-1313

Source: XF
Type: UNKNOWN
cisco-cve20211313-dos(196126)

Source: CCN
Type: Cisco Security Advisory cisco-sa-iosxr-dos-WwDdghs2
Cisco IOS XR Software Enf Broker Denial of Service Vulnerability

Source: CISCO
Type: Vendor Advisory
20210203 Cisco IOS XR Software Enf Broker Denial of Service Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/o:cisco:ios_xr:*:*:*:*:*:*:*:* (Version >= 5.0.0 and < 5.2.6)
  • OR cpe:/o:cisco:ios_xr:*:*:*:*:*:*:*:* (Version >= 5.3.0 and < 5.3.4)

    • Configuration CCN 1:
  • cpe:/o:cisco:ios_xr_software:4.0.11:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco ios xr *
    cisco ios xr *
    cisco ios xr software 4.0.11