Vulnerability Name:

CVE-2021-45757 (CCN-222484)

Assigned:2021-12-21
Published:2021-12-21
Updated:2022-03-29
Summary:ASUS AC68U <=3.0.0.4.385.20852 is affected by a buffer overflow in blocking.cgi, which may cause a denial of service (DoS).
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)
6.7 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:P/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
6.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
5.9 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
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
6.8 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-120
Vulnerability Consequences:Denial of Service
References:Source: MISC
Type: Broken Link
http://ac68u.com

Source: MISC
Type: Vendor Advisory
http://asus.com

Source: MITRE
Type: CNA
CVE-2021-45757

Source: XF
Type: UNKNOWN
asus-cve202145757-dos(222484)

Source: CCN
Type: Asus GIT Repository
Asus

Source: MISC
Type: Exploit, Third Party Advisory
https://github.com/IBUILI/Asus

Source: CCN
Type: Asus Web site
Asus RT-AC68U

Source: CCN
Type: Asus Web site
Asus RT-AC5300

Vulnerable Configuration:Configuration 1:
  • cpe:/o:asus:rt-ac68u_firmware:*:*:*:*:*:*:*:* (Version <= 3.0.0.4.385.20852)
  • AND
  • cpe:/h:asus:rt-ac68u:-:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/h:asus:rt-ac68u:-:*:*:*:*:*:*:*
  • OR cpe:/h:asus:rt-ac5300:-:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    asus rt-ac68u firmware *
    asus rt-ac68u -
    asus rt-ac68u -
    asus rt-ac5300 -