Vulnerability Name:

CVE-2021-20376 (CCN-195568)

Assigned:2020-12-17
Published:2021-10-06
Updated:2022-05-03
Summary:IBM Sterling File Gateway 2.2.0.0 through 6.1.1.0 could allow an authenticated attacker to enumerate usernames due to there being an observable discrepancy in returned messages. IBM X-Force ID: 195568.
CVSS v3 Severity:4.3 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)
3.8 Low (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/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): Low
Integrity (I): None
Availibility (A): None
4.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)
3.8 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/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): Low
Integrity (I): None
Availibility (A): None
CVSS v2 Severity:4.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
4.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-203
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2021-20376

Source: XF
Type: UNKNOWN
ibm-sterling-cve202120376-info-disc(195568)

Source: XF
Type: VDB Entry, Vendor Advisory
ibm-sterling-cve202120376-info-disc (195568)

Source: CCN
Type: IBM Security Bulletin 6496789 (Sterling File Gateway)
Access Control Vulnerability Affects IBM Sterling File Gateway (CVE-2021-20376)

Source: CONFIRM
Type: Patch, Vendor Advisory
https://www.ibm.com/support/pages/node/6496789

Vulnerable Configuration:Configuration 1:
  • cpe:/a:ibm:sterling_b2b_integrator:*:*:*:*:*:*:*:* (Version >= 2.2.0.0 and <= 5.2.6.5_3)
  • OR cpe:/a:ibm:sterling_b2b_integrator:*:*:*:*:*:*:*:* (Version >= 6.1.0.0 and <= 6.1.0.1)
  • OR cpe:/a:ibm:sterling_b2b_integrator:*:*:*:*:*:*:*:* (Version >= 6.0.0.0 and <= 6.0.3.4)

    • Configuration CCN 1:
  • cpe:/a:ibm:sterling_file_gateway:2.2.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:sterling_file_gateway:6.0.0.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    ibm sterling b2b integrator *
    ibm sterling b2b integrator *
    ibm sterling b2b integrator *
    ibm sterling file gateway 2.2.0.0
    ibm sterling file gateway 6.0.0.0