5.3
MEDIUM
CVE-2020-28397
Siemens SIMATIC Unauthorized Information Disclosure`
Description
A vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions < V21.9), SIMATIC S7 PLCSIM Advanced (All versions > V2 < V4), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (Version V4.4), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions > V2.5 < V2.9.2), SIMATIC S7-1500 Software Controller (All versions > V2.5 < V21.9), TIM 1531 IRC (incl. SIPLUS NET variants) (Version V2.1). Due to an incorrect authorization check in the affected component, an attacker could extract information about access protected PLC program variables over port 102/tcp from an affected device when reading multiple attributes at once.
INFO
Published Date :
Aug. 10, 2021, 11:15 a.m.
Last Modified :
Dec. 10, 2021, 7:57 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2020-28397
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-28397.
| URL | Resource |
|---|---|
| https://cert-portal.siemens.com/productcert/pdf/ssa-865327.pdf | Patch Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-28397 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-28397 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Dec. 10, 2021
Action Type Old Value New Value Changed CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1515sp_pc2_tf_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:cpu_1515sp_pc2_tf:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:siemens:cpu_1515sp_pc2_tf_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 21.9 OR cpe:2.3:h:siemens:cpu_1515sp_pc2_tf:-:*:*:*:*:*:*:* Changed CPE Configuration OR *cpe:2.3:a:siemens:simatic_s7-1500_software_controller:*:*:*:*:*:*:*:* versions up to (excluding) 2.5 OR *cpe:2.3:a:siemens:simatic_s7-1500_software_controller:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 21.9 -
CVE Modified by [email protected]
Sep. 14, 2021
Action Type Old Value New Value Changed Description A vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions), SIMATIC S7 PLCSIM Advanced (All versions > V2 < V4), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (Version V4.4), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions > V2.5 < V2.9.2), SIMATIC S7-1500 Software Controller (All versions > V2.5), TIM 1531 IRC (incl. SIPLUS NET variants) (Version V2.1). Due to an incorrect authorization check in the affected component, an attacker could extract information about access protected PLC program variables over port 102/tcp from an affected device when reading multiple attributes at once. A vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions < V21.9), SIMATIC S7 PLCSIM Advanced (All versions > V2 < V4), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (Version V4.4), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions > V2.5 < V2.9.2), SIMATIC S7-1500 Software Controller (All versions > V2.5 < V21.9), TIM 1531 IRC (incl. SIPLUS NET variants) (Version V2.1). Due to an incorrect authorization check in the affected component, an attacker could extract information about access protected PLC program variables over port 102/tcp from an affected device when reading multiple attributes at once. -
Initial Analysis by [email protected]
Aug. 20, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:N/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Changed Reference Type https://cert-portal.siemens.com/productcert/pdf/ssa-865327.pdf No Types Assigned https://cert-portal.siemens.com/productcert/pdf/ssa-865327.pdf Patch, Vendor Advisory Added CWE NIST CWE-863 Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1504d_tf_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1504d_tf:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1507d_tf_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1507d_tf:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1515sp_pc2_tf_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:cpu_1515sp_pc2_tf:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:simatic_s7_plcsim_advanced_firmware:*:*:*:*:*:*:*:* versions from (including) 2.0 up to (excluding) 4.0 OR cpe:2.3:h:siemens:simatic_s7_plcsim_advanced:-:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:a:siemens:simatic_s7-1500_software_controller:*:*:*:*:*:*:*:* versions up to (excluding) 2.5 Added CPE Configuration AND OR *cpe:2.3:o:siemens:tim_1531_irc_firmware:2.1:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:tim_1531_irc:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1211c_firmware:4.4:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:cpu_1211c:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1212c_firmware:4.4:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:cpu_1212c:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1212fc_firmware:4.4:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:cpu_1212fc:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1214fc_firmware:4.4:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:cpu_1214fc:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1214c_firmware:4.4:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:cpu_1214c:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1215fc_firmware:4.4:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:cpu_1215fc:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1215c_firmware:4.4:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:cpu_1215c:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1217c_firmware:4.4:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:cpu_1217c:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:siplus_cpu_1510sp_f-1pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:siplus_cpu_1510sp_f-1pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:siplus_cpu_1511-1_pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:siplus_cpu_1511-1_pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:siplus_cpu_1511-1_pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:siplus_cpu_1511-1_pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:siplus_cpu_1511f-1_pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:siplus_cpu_1511f-1_pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:siplus_cpu_1512sp-1_pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:siplus_cpu_1512sp-1_pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:siplus_cpu_1512sp_f-1pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:siplus_cpu_1512sp_f-1pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:siplus_cpu_1513-1_pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:siplus_cpu_1513-1_pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:siplus_cpu_1513-1_pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:siplus_cpu_1513-1_pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:siplus_cpu_1513f-1_pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:siplus_cpu_1513f-1_pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:siplus_cpu_1516-3_pn\/dp_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:siplus_cpu_1516-3_pn\/dp:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:siplus_cpu_1516-3_pn\/dp_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:siplus_cpu_1516-3_pn\/dp:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:siplus_cpu-1516f-3_pn\/dp_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:siplus_cpu-1516f-3_pn\/dp:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:siplus_cpu_1518-4_pn\/dp_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:siplus_cpu_1518-4_pn\/dp:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:siplus_cpu_1518f-4_pn\/dp_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:siplus_cpu_1518f-4_pn\/dp:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1510sp-1pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1510sp-1pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu1510sp_f-1_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu1510sp_f-1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1511-1pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1511-1pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1511-1pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1511-1pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1511c-1_pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1511c-1_pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1511f-1pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1511f-1pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1511t-1pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1511t-1pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1511tf-1pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1511tf-1pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1512c-1_pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1512c-1_pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1512sp-1_pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1512sp-1_pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1512sp_f-1_pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1512sp_f-1_pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1513-1_pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1513-1_pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1513f-1_pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1513f-1_pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1513r-1_pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1513r-1_pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1513pro_f-2_pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1513pro_f-2_pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1515-2_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1515-2:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1515f-2_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1515f-2:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1515r-2_pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1515r-2_pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1515t-2_pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1515t-2_pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1515tf-2_pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1515tf-2_pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1516pro_f-2_pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1516pro_f-2_pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1516pro-2_pn_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1516pro-2_pn:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1516-3_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1516-3:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1516f-3_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2. OR cpe:2.3:h:siemens:cpu_1516f-3:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1516t-3_pn\/dp_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1516t-3_pn\/dp:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1516tf-3_pn\/dp_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1516tf-3_pn\/dp:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1517-3_pn\/dp_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1517-3_pn\/dp:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1517f-3_pn\/dp_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1517f-3_pn\/dp:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1517t-3_pn\/dp_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1517t-3_pn\/dp:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1517tf-3_pn\/dp_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1517tf-3_pn\/dp:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1518-4_pn\/dp_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1518-4_pn\/dp:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:cpu_1518f-4_pn\/dp_firmware:*:*:*:*:*:*:*:* versions from (including) 2.5 up to (excluding) 2.9.2 OR cpe:2.3:h:siemens:cpu_1518f-4_pn\/dp:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-28397 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-28397
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.08 }} 0.01%
score
0.34861
percentile
CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability