Vulnerability CVE-2021-20473

Vulnerability Name:

CVE-2021-20473 (CCN-196944)

Assigned:

2020-12-17

Published:

2021-10-06

Updated:

2021-10-16

Summary:

IBM Sterling File Gateway User Interface 2.2.0.0 through 6.1.1.0 does not invalidate session after logout which could allow an authenticated user to impersonate another user on the system. IBM X-Force ID: 196944.

CVSS v3 Severity:

6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N)
5.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/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): None Integrity (I): High Availibility (A): None

6.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L)
5.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/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): Low Availibility (A): Low

CVSS v2 Severity:

4.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): None Integrity (I): Partial Availibility (A): None

6.5 Medium (CCN 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 Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Partial Integrity (I): Partial Availibility (A): Partial

Vulnerability Type:

CWE-613

Vulnerability Consequences:

Gain Privileges

References:

Source: MITRE
Type: CNA
CVE-2021-20473

Source: XF
Type: UNKNOWN
ibm-sterling-cve202120473-session-fixation(196944)

Source: XF
Type: VDB Entry, Vendor Advisory
ibm-sterling-cve202120473-session-fixation (196944)

Source: CCN
Type: IBM Security Bulletin 6496785 (Sterling File Gateway)
Session Fixation Vulnerability Affects BM Sterling File Gateway (CVE-2021-20473)

Source: CONFIRM
Type: Patch, Vendor Advisory
https://www.ibm.com/support/pages/node/6496785

Vulnerable Configuration:

Configuration 1:

cpe:/a:ibm:sterling_file_gateway:*:*:*:*:*:*:*:* (Version >= 2.2.0.0 and <= 5.2.6.5_3)

OR cpe:/a:ibm:sterling_file_gateway:*:*:*:*:*:*:*:* (Version >= 6.0.0.0 and <= 6.0.3.4)

OR cpe:/a:ibm:sterling_file_gateway:*:*:*:*:*:*:*:* (Version >= 6.1.0.0 and <= 6.1.0.1)

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

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