Vulnerability Name:

CVE-2021-31349 (CCN-211296)

Assigned:2021-10-13
Published:2021-10-13
Updated:2022-10-25
Summary:The usage of an internal HTTP header created an authentication bypass vulnerability (CWE-287), allowing an attacker to view internal files, change settings, manipulate services and execute arbitrary code. This issue affects all Juniper Networks 128 Technology Session Smart Router versions prior to 4.5.11, and all versions of 5.0 up to and including 5.0.1.
CVSS v3 Severity:9.8 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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): High
Integrity (I): High
Availibility (A): High
9.8 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
10.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-noinfo
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2021-31349

Source: XF
Type: UNKNOWN
juniper-cve202131349-code-exec(211296)

Source: CCN
Type: Juniper Networks Security Bulletin JSA11256
Session Smart Router: Authentication Bypass Vulnerability (CVE-2021-31349)

Source: CONFIRM
Type: Vendor Advisory
https://kb.juniper.net/JSA11256

Vulnerable Configuration:Configuration 1:
  • cpe:/o:juniper:128_technology_session_smart_router_firmware:*:*:*:*:*:*:*:* (Version < 4.5.11)
  • OR cpe:/o:juniper:128_technology_session_smart_router_firmware:*:*:*:*:*:*:*:* (Version >= 5.0.0 and <= 5.0.1)
  • AND
  • cpe:/h:juniper:128_technology_session_smart_router:-:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    juniper 128 technology session smart router firmware *
    juniper 128 technology session smart router firmware *
    juniper 128 technology session smart router -