Vulnerability Name:

CVE-2020-35782 (CCN-194028)

Assigned:2020-12-16
Published:2020-12-16
Updated:2021-03-26
Summary:Certain NETGEAR devices are affected by lack of access control at the function level. This affects JGS516PE before 2.6.0.48, JGS524Ev2 before 2.6.0.48, JGS524PE before 2.6.0.48, and GS116Ev2 before 2.6.0.48. The TFTP firmware update mechanism does not properly implement firmware validations, allowing remote attackers to write arbitrary data to internal memory.
CVSS v3 Severity:8.1 High (CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H)
7.1 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): High
Availibility (A): High
8.1 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H)
7.1 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:7.8 High (CVSS v2 Vector: AV:A/AC:L/Au:N/C:N/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Complete
Availibility (A): Complete
7.8 High (CCN CVSS v2 Vector: AV:A/AC:L/Au:N/C:N/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-Other
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2020-35782

Source: XF
Type: UNKNOWN
netgear-cve202035782-dos(194028)

Source: CCN
Type: NETGEAR Security Advisory: 000062636
Security Advisory for Missing Function Level Access Control on Some Smart Managed Plus Switches

Source: MISC
Type: Vendor Advisory
https://kb.netgear.com/000062636/Security-Advisory-for-Missing-Function-Level-Access-Control-on-Some-Smart-Managed-Plus-Switches-PSV-2020-0378

Source: MISC
Type: Exploit, Third Party Advisory
https://research.nccgroup.com/2021/03/08/technical-advisory-multiple-vulnerabilities-in-netgear-prosafe-plus-jgs516pe-gs116ev2-switches/

Vulnerable Configuration:Configuration 1:
  • cpe:/o:netgear:jgs516pe_firmware:*:*:*:*:*:*:*:* (Version < 2.6.0.48)
  • AND
  • cpe:/h:netgear:jgs516pe:-:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:netgear:jgs524e_firmware:*:*:*:*:*:*:*:* (Version < 2.6.0.48)
  • AND
  • cpe:/h:netgear:jgs524e:v2:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/o:netgear:jgs524pe_firmware:*:*:*:*:*:*:*:* (Version < 2.6.0.48)
  • AND
  • cpe:/h:netgear:jgs524pe:-:*:*:*:*:*:*:*

    • Configuration 4:
  • cpe:/o:netgear:gs116e_firmware:*:*:*:*:*:*:*:* (Version < 2.6.0.48)
  • AND
  • cpe:/h:netgear:gs116e:v2:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/h:netgear:jgs524e:v2:*:*:*:*:*:*:*
  • OR cpe:/h:netgear:jgs524pe:-:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    netgear jgs516pe firmware *
    netgear jgs516pe -
    netgear jgs524e firmware *
    netgear jgs524e v2
    netgear jgs524pe firmware *
    netgear jgs524pe -
    netgear gs116e firmware *
    netgear gs116e v2
    netgear jgs524e v2
    netgear jgs524pe -