Vulnerability Name:

CVE-2021-20076 (CCN-197707)

Assigned:2020-12-17
Published:2021-03-02
Updated:2021-03-10
Summary:Tenable.sc and Tenable.sc Core versions 5.13.0 through 5.17.0 were found to contain a vulnerability that could allow an authenticated, unprivileged user to perform Remote Code Execution (RCE) on the Tenable.sc server via Hypertext Preprocessor unserialization.
CVSS v3 Severity:8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
8.4 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/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): High
Integrity (I): High
Availibility (A): High
8.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
8.4 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/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): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:6.5 Medium (CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
9.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-502
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2021-20076

Source: XF
Type: UNKNOWN
tenablesc-cve202120076-code-exec(197707)

Source: CCN
Type: Tenable Web site
Tenable

Source: CCN
Type: Tenable Advisory ID: TNS-2021-03
Stand-alone Security Patches Available for Tenable.sc versions 5.13.0 to 5.17.0

Source: MISC
Type: Vendor Advisory
https://www.tenable.com/security/tns-2021-03

Vulnerable Configuration:Configuration 1:
  • cpe:/a:tenable:tenable.sc:*:*:*:*:*:*:*:* (Version >= 5.13.0 and <= 5.17.0)

    • Configuration CCN 1:
  • cpe:/a:tenable:tenable.sc:5.17.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    tenable tenable.sc *
    tenable tenable.sc 5.17.0