8.3
HIGH
CVE-2021-22555
Linux Netfilter X Tables Heap Out-of-Bounds Write Vulnerability
Description

A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space

INFO

Published Date :

July 7, 2021, 12:15 p.m.

Last Modified :

March 31, 2022, 7:15 p.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

6.0

Exploitability Score :

1.6
Public PoC/Exploit Available at Github

CVE-2021-22555 has a 72 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-2021-22555 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 hci_management_node
2 Netapp solidfire
3 Netapp h615c_firmware
4 Netapp h610s_firmware
5 Netapp h610c_firmware
6 Netapp fas_8300_firmware
7 Netapp fas_8700_firmware
8 Netapp aff_a400_firmware
9 Netapp aff_a250_firmware
10 Netapp aff_500f_firmware
1 Linux linux_kernel
1 Brocade fabric_operating_system
: Total Affected Vendor : 3 | Products : 12
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-2021-22555.

URL Resource
http://packetstormsecurity.com/files/163528/Linux-Kernel-Netfilter-Heap-Out-Of-Bounds-Write.html Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/163878/Kernel-Live-Patch-Security-Notice-LSN-0080-1.html Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/164437/Netfilter-x_tables-Heap-Out-Of-Bounds-Write-Privilege-Escalation.html Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html Exploit Third Party Advisory VDB Entry
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_tables.c?id=9fa492cdc160cd27ce1046cb36f47d3b2b1efa21 Mailing List Patch Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_tables.c?id=b29c457a6511435960115c0f548c4360d5f4801d Mailing List Patch Vendor Advisory
https://github.com/google/security-research/security/advisories/GHSA-xxx5-8mvq-3528 Exploit Third Party Advisory
https://security.netapp.com/advisory/ntap-20210805-0010/ 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).

Profile Photo
a-ramses/security-research

None

CodeQL Shell Python C Java Go Assembly Makefile GDB C++

Updated: 1 month, 2 weeks ago
0 stars 0 fork 0 watcher
Born at : Oct. 6, 2024, 9:55 p.m. This repo has been linked 10 different CVEs too.
Profile Photo
Faizan-Khanx/PYTHA-SHELL

PYTHA-SHELL is an educational cybersecurity tool featuring an RCE mode. It offers practical examples and demonstrations to help students understand various attacks and vulnerabilities in a controlled environment. PYTHA-SHELL provides hands-on experience with real-world security risks making it a valuable resource for learning and teaching

backdoor backdoor-attacks python pythonshell reverse-shell shell shell-script cybersecurityeducation hackingtools securitytraining vapt remotecodeexecution vulnerability-assessment cybersecurity hacking-tool

Updated: 2 months ago
2 stars 0 fork 0 watcher
Born at : Sept. 17, 2024, 5:16 p.m. This repo has been linked 2 different CVEs too.
Profile Photo
jbeagles8755a0/security-research

None

CodeQL Shell Python C Java Go Assembly Makefile GDB C++

Updated: 2 months, 2 weeks ago
0 stars 0 fork 0 watcher
Born at : Sept. 6, 2024, 8:39 a.m. This repo has been linked 10 different CVEs too.
Profile Photo
Coolaid003/Security-Research

None

CodeQL Shell Python C Java Go Assembly Makefile GDB C++

Updated: 2 months, 3 weeks ago
0 stars 0 fork 0 watcher
Born at : Aug. 29, 2024, 9:55 p.m. This repo has been linked 10 different CVEs too.
Profile Photo
a-roshbaik/Linux-Privilege-Escalation-Exploits

None

C Shell Python Assembly Ruby Makefile Meson

Updated: 4 months ago
0 stars 0 fork 0 watcher
Born at : July 20, 2024, 8:34 p.m. This repo has been linked 91 different CVEs too.
Profile Photo
HaxorSecInfec/autoroot.sh

Auto Root / Privilege Escalation Exploit

autoroot privilege privilege-escalation root

Shell

Updated: 3 months ago
2 stars 1 fork 1 watcher
Born at : June 11, 2024, 9:57 p.m. This repo has been linked 85 different CVEs too.
Profile Photo
DrewSC13/Linpeas

linpeas.sh

Shell

Updated: 4 months, 4 weeks ago
2 stars 0 fork 0 watcher
Born at : June 7, 2024, 4:52 p.m. This repo has been linked 8 different CVEs too.
Profile Photo
NaInSec/CVE-PoC-in-GitHub

All CVE - PoC in GitHub

poc proofofconcept tester allcve cvegithub cvenew cvepoc cveupdate

Updated: 2 months, 3 weeks ago
5 stars 2 fork 2 watcher
Born at : March 22, 2024, 3:58 p.m. This repo has been linked 928 different CVEs too.
Profile Photo
iridium-soda/container-escape-exploits

整理容器逃逸相关的漏洞和exploits.

Makefile C Python Dockerfile Shell Go

Updated: 4 months, 2 weeks ago
7 stars 0 fork 0 watcher
Born at : March 20, 2024, 10:19 a.m. This repo has been linked 27 different CVEs too.
Profile Photo
zecool/cve

None

Updated: 8 months, 1 week ago
1 stars 0 fork 0 watcher
Born at : March 11, 2024, 1:21 p.m. This repo has been linked 930 different CVEs too.
Profile Photo
letsr00t/CVE-2021-22555

None

C

Updated: 8 months, 3 weeks ago
0 stars 0 fork 0 watcher
Born at : Feb. 27, 2024, 5:22 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
43622283/awesome-cloud-native-security

None

Updated: 8 months, 4 weeks ago
0 stars 0 fork 0 watcher
Born at : Feb. 24, 2024, 8:03 a.m. This repo has been linked 37 different CVEs too.
Profile Photo
lions2012/Penetration_Testing_POC

渗透测试有关的POC、EXP、脚本、提权、小工具等---About penetration-testing python-script poc getshell csrf xss cms php-getshell domainmod-xss csrf-webshell cobub-razor cve rce sql sql-poc poc-exp bypass oa-getshell cve-cms

Assembly Python Shell PHP C++ C Go Ruby HTML Java

Updated: 3 months, 2 weeks ago
4 stars 0 fork 0 watcher
Born at : Feb. 7, 2024, 2:08 p.m. This repo has been linked 305 different CVEs too.
Profile Photo
letsr00t/-2021-LOCALROOT-CVE-2021-22555

None

Updated: 9 months, 2 weeks ago
0 stars 0 fork 0 watcher
Born at : Feb. 5, 2024, 7:05 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
talent-x90c/cve_list

cve_categorized

Updated: 9 months, 3 weeks ago
0 stars 0 fork 0 watcher
Born at : Jan. 31, 2024, 3:55 a.m. This repo has been linked 6 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-2021-22555 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-22555 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]

    Mar. 31, 2022

    Action Type Old Value New Value
    Changed Reference Type http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html No Types Assigned http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html Exploit, Third Party Advisory, VDB Entry
  • CVE Modified by [email protected]

    Jan. 06, 2022

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html [No Types Assigned]
  • Modified Analysis by [email protected]

    Dec. 16, 2021

    Action Type Old Value New Value
    Changed Reference Type http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html Third Party Advisory, VDB Entry http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html Exploit, Third Party Advisory, VDB Entry
    Changed Reference Type http://packetstormsecurity.com/files/164437/Netfilter-x_tables-Heap-Out-Of-Bounds-Write-Privilege-Escalation.html No Types Assigned http://packetstormsecurity.com/files/164437/Netfilter-x_tables-Heap-Out-Of-Bounds-Write-Privilege-Escalation.html Exploit, Third Party Advisory, VDB Entry
  • CVE Modified by [email protected]

    Oct. 07, 2021

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/164437/Netfilter-x_tables-Heap-Out-Of-Bounds-Write-Privilege-Escalation.html [No Types Assigned]
  • Modified Analysis by [email protected]

    Sep. 21, 2021

    Action Type Old Value New Value
    Changed Reference Type http://packetstormsecurity.com/files/163528/Linux-Kernel-Netfilter-Heap-Out-Of-Bounds-Write.html No Types Assigned http://packetstormsecurity.com/files/163528/Linux-Kernel-Netfilter-Heap-Out-Of-Bounds-Write.html Third Party Advisory, VDB Entry
    Changed Reference Type http://packetstormsecurity.com/files/163878/Kernel-Live-Patch-Security-Notice-LSN-0080-1.html No Types Assigned http://packetstormsecurity.com/files/163878/Kernel-Live-Patch-Security-Notice-LSN-0080-1.html Exploit, Third Party Advisory, VDB Entry
    Changed Reference Type http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html No Types Assigned http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html Third Party Advisory, VDB Entry
    Changed Reference Type https://security.netapp.com/advisory/ntap-20210805-0010/ No Types Assigned https://security.netapp.com/advisory/ntap-20210805-0010/ Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:brocade:fabric_operating_system:-:*:*:*:*:*:*:*
    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:fas_8700_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:fas_8700:-:*:*:*:*:*:*:*
    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:aff_a250_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:aff_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: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 OR *cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Sep. 14, 2021

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html [No Types Assigned]
  • CVE Modified by [email protected]

    Aug. 18, 2021

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/163878/Kernel-Live-Patch-Security-Notice-LSN-0080-1.html [No Types Assigned]
  • CVE Modified by [email protected]

    Aug. 05, 2021

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20210805-0010/ [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 16, 2021

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/163528/Linux-Kernel-Netfilter-Heap-Out-Of-Bounds-Write.html [No Types Assigned]
  • Initial Analysis by [email protected]

    Jul. 09, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:P/A:P)
    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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_tables.c?id=9fa492cdc160cd27ce1046cb36f47d3b2b1efa21 No Types Assigned https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_tables.c?id=9fa492cdc160cd27ce1046cb36f47d3b2b1efa21 Mailing List, Patch, Vendor Advisory
    Changed Reference Type https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_tables.c?id=b29c457a6511435960115c0f548c4360d5f4801d No Types Assigned https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_tables.c?id=b29c457a6511435960115c0f548c4360d5f4801d Mailing List, Patch, Vendor Advisory
    Changed Reference Type https://github.com/google/security-research/security/advisories/GHSA-xxx5-8mvq-3528 No Types Assigned https://github.com/google/security-research/security/advisories/GHSA-xxx5-8mvq-3528 Exploit, Third Party Advisory
    Added CWE NIST CWE-787
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.19 up to (excluding) 4.4.267 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.5 up to (excluding) 4.9.267 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 up to (excluding) 4.14.231 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.188 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.113 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.31 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.12
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-2021-22555 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-2021-22555 weaknesses.

Exploit Prediction

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

0.21 }} -0.04%

score

0.59296

percentile

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