Vulnerability Name:

CVE-2021-1375 (CCN-198729)

Assigned:2020-11-13
Published:2021-03-24
Updated:2021-03-30
Summary:Multiple vulnerabilities in the fast reload feature of Cisco IOS XE Software running on Cisco Catalyst 3850, Cisco Catalyst 9300, and Cisco Catalyst 9300L Series Switches could allow an authenticated, local attacker to either execute arbitrary code on the underlying operating system, install and boot a malicious software image, or execute unsigned binaries on an affected device. These vulnerabilities are due to improper checks performed by system boot routines. To exploit these vulnerabilities, the attacker would need privileged access to the CLI of the device. A successful exploit could allow the attacker to either execute arbitrary code on the underlying operating system or execute unsigned code and bypass the image verification check part of the secure boot process. For more information about these vulnerabilities, see the Details section of this advisory.
CVSS v3 Severity:6.7 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)
5.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
6.7 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)
5.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:7.2 High (CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
6.8 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-347
CWE-347
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2021-1375

Source: XF
Type: UNKNOWN
cisco-cve20211375-code-exec(198729)

Source: CCN
Type: Cisco Security Advisory cisco-sa-fast-Zqr6DD5
Cisco IOS XE Software Fast Reload Vulnerabilities

Source: CISCO
Type: Vendor Advisory
20210324 Cisco IOS XE Software Fast Reload Vulnerabilities

Vulnerable Configuration:Configuration 1:
  • cpe:/o:cisco:ios_xe:16.5.1:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.5.1a:*:*:*:*:*:*:*
  • 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:16.6.4:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.6.4a:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.6.4s:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.6.5:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.6.6:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.6.7:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.8.1:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.8.1a:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.8.1s:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.9.1:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.9.1s:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.9.2:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.9.2s:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.9.3:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.9.3a:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.9.3s:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.9.4:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.10.1:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.10.1e:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.10.1s:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.11.1:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.11.1b:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.11.1c:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.11.1s:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.11.2:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.12.1:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.12.1c:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.12.1s:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.12.2:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.12.2s:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.12.2t:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:17.1.1:*:*:*:*:*:*:*

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

    • * Denotes that component is vulnerable
    BACK
    cisco ios xe 16.5.1
    cisco ios xe 16.5.1a
    cisco ios xe 16.6.1
    cisco ios xe 16.6.2
    cisco ios xe 16.6.3
    cisco ios xe 16.6.4
    cisco ios xe 16.6.4a
    cisco ios xe 16.6.4s
    cisco ios xe 16.6.5
    cisco ios xe 16.6.6
    cisco ios xe 16.6.7
    cisco ios xe 16.8.1
    cisco ios xe 16.8.1a
    cisco ios xe 16.8.1s
    cisco ios xe 16.9.1
    cisco ios xe 16.9.1s
    cisco ios xe 16.9.2
    cisco ios xe 16.9.2s
    cisco ios xe 16.9.3
    cisco ios xe 16.9.3a
    cisco ios xe 16.9.3s
    cisco ios xe 16.9.4
    cisco ios xe 16.10.1
    cisco ios xe 16.10.1e
    cisco ios xe 16.10.1s
    cisco ios xe 16.11.1
    cisco ios xe 16.11.1b
    cisco ios xe 16.11.1c
    cisco ios xe 16.11.1s
    cisco ios xe 16.11.2
    cisco ios xe 16.12.1
    cisco ios xe 16.12.1c
    cisco ios xe 16.12.1s
    cisco ios xe 16.12.2
    cisco ios xe 16.12.2s
    cisco ios xe 16.12.2t
    cisco ios xe 17.1.1
    cisco ios xe software *