6.7
MEDIUM
CVE-2020-15436
Linux Kernel Use-after-free Block Device Denial of Service Privilege Escalation
Description

Use-after-free vulnerability in fs/block_dev.c in the Linux kernel before 5.8 allows local users to gain privileges or cause a denial of service by leveraging improper access to a certain error field.

INFO

Published Date :

Nov. 23, 2020, 9:15 p.m.

Last Modified :

Nov. 21, 2024, 5:05 a.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

0.8
Public PoC/Exploit Available at Github

CVE-2020-15436 has a 3 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2020-15436 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.

ID Vendor Product Action
1 Netapp solidfire_baseboard_management_controller_firmware
2 Netapp h410c_firmware
3 Netapp a700s_firmware
4 Netapp cloud_backup
5 Netapp solidfire_\&_hci_management_node
6 Netapp solidfire_baseboard_management_controller
7 Netapp a250_firmware
8 Netapp h615c_firmware
9 Netapp h610s_firmware
10 Netapp h610c_firmware
11 Netapp fas_8300_firmware
12 Netapp fas_8700_firmware
13 Netapp aff_8300_firmware
14 Netapp aff_8700_firmware
15 Netapp aff_a400_firmware
16 Netapp fabric-attached_storage_a400_firmware
17 Netapp h410c
18 Netapp aff_500f_firmware
19 Netapp fas_500f_firmware
20 Netapp fas_8300
21 Netapp fas_8700
22 Netapp h610c
23 Netapp h610s
24 Netapp h615c
25 Netapp a700s
26 Netapp a250
27 Netapp aff_a400
28 Netapp aff_8300
29 Netapp aff_8700
30 Netapp fabric-attached_storage_a400
31 Netapp aff_500f
32 Netapp fas_500f
1 Linux linux_kernel
1 Broadcom brocade_fabric_operating_system_firmware
: Total Affected Vendor : 3 | Products : 34
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-2020-15436.

URL Resource
https://lkml.org/lkml/2020/6/7/379 Exploit Patch Vendor Advisory
https://security.netapp.com/advisory/ntap-20201218-0002/ Third Party Advisory
https://lkml.org/lkml/2020/6/7/379 Exploit Patch Vendor Advisory
https://security.netapp.com/advisory/ntap-20201218-0002/ Third Party 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).

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google/vanir

Vanir is a source code-based static analysis tool that automatically identifies the list of missing security patches in the target system. By default, Vanir pulls up-to-date CVEs from Open Source Vulnerabilities (OSV) together with their corresponding signatures so that users can transparently scan missing patches for an up-to-date list of CVEs.

Starlark Python C++

Updated: 2 weeks, 1 day ago
76 stars 4 fork 4 watcher
Born at : Aug. 7, 2024, 7:04 p.m. This repo has been linked 16 different CVEs too.
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Trinadh465/linux-4.19.72_CVE-2020-15436

None

Makefile Roff C Assembly Shell Perl C++ Awk Python sed

Updated: 1 year, 3 months ago
0 stars 0 fork 0 watcher
Born at : Aug. 29, 2023, 10:53 a.m. This repo has been linked 1 different CVEs too.
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vincent-deng/veracode-container-security-finding-parser

Map Vulnerabilities into Different Layers of the Container Image

Python

Updated: 1 year, 11 months ago
1 stars 0 fork 0 watcher
Born at : Oct. 5, 2022, 12:07 p.m. This repo has been linked 1276 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-15436 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-15436 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 af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://lkml.org/lkml/2020/6/7/379
    Added Reference https://security.netapp.com/advisory/ntap-20201218-0002/
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    Oct. 12, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.8 OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.38 up to (excluding) 4.4.229 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.5 up to (excluding) 4.9.229 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 up to (excluding) 4.14.186 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.130 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.49 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.7.6
  • Modified Analysis by [email protected]

    Oct. 19, 2022

    Action Type Old Value New Value
    Changed Reference Type https://security.netapp.com/advisory/ntap-20201218-0002/ No Types Assigned https://security.netapp.com/advisory/ntap-20201218-0002/ Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:broadcom:brocade_fabric_operating_system_firmware:-:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h610c_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h610c:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h610s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h610s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h615c_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h615c:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:a700s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:a700s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:aff_8700_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:aff_8700:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:fas_8700_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:fas_8700:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:aff_8300_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:aff_8300:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:fas_8300_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:fas_8300:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:aff_a400_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:aff_a400:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:fabric-attached_storage_a400_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:fabric-attached_storage_a400:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:a250_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:a250:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:aff_500f_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:aff_500f:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:fas_500f_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:fas_500f:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Dec. 18, 2020

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20201218-0002/ [No Types Assigned]
  • Reanalysis by [email protected]

    Dec. 09, 2020

    Action Type Old Value New Value
    Removed CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
  • Initial Analysis by [email protected]

    Dec. 02, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://lkml.org/lkml/2020/6/7/379 No Types Assigned https://lkml.org/lkml/2020/6/7/379 Exploit, Patch, Vendor Advisory
    Added CWE NIST CWE-416
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.8
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-2020-15436 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-2020-15436 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.04 }} 0.00%

score

0.05635

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: