CVE-2021-33909
Linux Kernel Seq File Out-of-bounds Write Vulnerability
Description
fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.
INFO
Published Date :
July 20, 2021, 7:15 p.m.
Last Modified :
Nov. 7, 2023, 3:35 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2021-33909 has a 24 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-2021-33909
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-2021-33909
.
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).
None
Go Shell Makefile C Batchfile
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
None
CodeQL C++ Dockerfile Makefile
None
None
Assembly Python Shell PHP C++ C Go Ruby HTML Java
Map Vulnerabilities into Different Layers of the Container Image
Python
Vault Exploit Defense
Makefile Shell C
None
Assembly Python Shell PHP C++ C Go Ruby HTML Java
None
None
Dockerfile Go
https://github.com/Mr-xn/Penetration_Testing_POC
Assembly Python Shell PHP C++ C Go Ruby HTML Java
本项目制作的初衷是帮助渗透新手快速搭建工作环境,工欲善其事,必先利其器。
CVE-2021-33909 Sequoia
C
some interesting exploit articles
Exploit code for CVE-2021-33909,Just a dump of removed https://github.com/AmIAHuman/ repo
C
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-33909
vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-33909
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 -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z4UHHIGISO3FVRF4CQNJS4IKA25ATSFU/ [No types assigned] Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/Z4UHHIGISO3FVRF4CQNJS4IKA25ATSFU/ -
Reanalysis by [email protected]
Mar. 01, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.16 up to (excluding) 5.13.4 OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.12.43 up to (excluding) 3.13 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.16 up to (excluding) 4.4.276 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.5 up to (excluding) 4.9.276 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 up to (excluding) 4.14.240 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.198 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.134 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.52 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.12.19 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.13 up to (excluding) 5.13.4 -
Modified Analysis by [email protected]
Dec. 09, 2022
Action Type Old Value New Value Changed Reference Type https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015 No Types Assigned https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015 Third Party Advisory Removed CWE NIST CWE-120 Added CWE NIST CWE-787 Added CWE NIST CWE-190 Added CPE Configuration AND OR *cpe:2.3:o:sonicwall:sma1000_firmware:*:*:*:*:*:*:*:* versions up to (including) 12.4.2-02044 OR cpe:2.3:h:sonicwall:sma1000:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Aug. 10, 2022
Action Type Old Value New Value Added Reference https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015 [No Types Assigned] -
Modified Analysis by [email protected]
Mar. 01, 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 Third Party Advisory, VDB Entry Changed Reference Type https://www.oracle.com/security-alerts/cpujan2022.html No Types Assigned https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:oracle:communications_session_border_controller:8.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:communications_session_border_controller:8.3:*:*:*:*:*:*:* *cpe:2.3:a:oracle:communications_session_border_controller:8.4:*:*:*:*:*:*:* *cpe:2.3:a:oracle:communications_session_border_controller:9.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Feb. 07, 2022
Action Type Old Value New Value Added Reference https://www.oracle.com/security-alerts/cpujan2022.html [No Types Assigned] -
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]
Oct. 18, 2021
Action Type Old Value New Value Changed Reference Type http://packetstormsecurity.com/files/163671/Kernel-Live-Patch-Security-Notice-LSN-0079-1.html Third Party Advisory http://packetstormsecurity.com/files/163671/Kernel-Live-Patch-Security-Notice-LSN-0079-1.html 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 http://www.openwall.com/lists/oss-security/2021/08/25/10 No Types Assigned http://www.openwall.com/lists/oss-security/2021/08/25/10 Mailing List, Third Party Advisory Changed Reference Type http://www.openwall.com/lists/oss-security/2021/09/17/2 No Types Assigned http://www.openwall.com/lists/oss-security/2021/09/17/2 Mailing List, Third Party Advisory Changed Reference Type http://www.openwall.com/lists/oss-security/2021/09/17/4 No Types Assigned http://www.openwall.com/lists/oss-security/2021/09/17/4 Mailing List, Third Party Advisory Changed Reference Type http://www.openwall.com/lists/oss-security/2021/09/21/1 No Types Assigned http://www.openwall.com/lists/oss-security/2021/09/21/1 Mailing List, Third Party Advisory Changed Reference Type https://security.netapp.com/advisory/ntap-20210819-0004/ No Types Assigned https://security.netapp.com/advisory/ntap-20210819-0004/ Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Sep. 21, 2021
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2021/09/21/1 [No Types Assigned] -
CVE Modified by [email protected]
Sep. 17, 2021
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2021/09/17/4 [No Types Assigned] -
CVE Modified by [email protected]
Sep. 17, 2021
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2021/09/17/2 [No Types Assigned] -
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. 26, 2021
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2021/08/25/10 [No Types Assigned] -
CVE Modified by [email protected]
Aug. 19, 2021
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20210819-0004/ [No Types Assigned] -
Initial Analysis by [email protected]
Jul. 29, 2021
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 http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html No Types Assigned http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html Exploit, Third Party Advisory, VDB Entry Changed Reference Type http://packetstormsecurity.com/files/163671/Kernel-Live-Patch-Security-Notice-LSN-0079-1.html No Types Assigned http://packetstormsecurity.com/files/163671/Kernel-Live-Patch-Security-Notice-LSN-0079-1.html Third Party Advisory Changed Reference Type http://www.openwall.com/lists/oss-security/2021/07/22/7 No Types Assigned http://www.openwall.com/lists/oss-security/2021/07/22/7 Mailing List, Third Party Advisory Changed Reference Type https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4 No Types Assigned https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4 Mailing List, Patch, Vendor Advisory Changed Reference Type https://github.com/torvalds/linux/commit/8cae8cd89f05f6de223d63e6d15e31c8ba9cf53b No Types Assigned https://github.com/torvalds/linux/commit/8cae8cd89f05f6de223d63e6d15e31c8ba9cf53b Patch, Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/07/msg00014.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/07/msg00014.html Mailing List, Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html Mailing List, Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/07/msg00016.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/07/msg00016.html Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/Z4UHHIGISO3FVRF4CQNJS4IKA25ATSFU/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/Z4UHHIGISO3FVRF4CQNJS4IKA25ATSFU/ Mailing List, Third Party Advisory Changed Reference Type https://www.debian.org/security/2021/dsa-4941 No Types Assigned https://www.debian.org/security/2021/dsa-4941 Third Party Advisory Changed Reference Type https://www.openwall.com/lists/oss-security/2021/07/20/1 No Types Assigned https://www.openwall.com/lists/oss-security/2021/07/20/1 Exploit, Mailing List, Third Party Advisory Added CWE NIST CWE-120 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.16 up to (excluding) 5.13.4 Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jul. 26, 2021
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/163671/Kernel-Live-Patch-Security-Notice-LSN-0079-1.html [No Types Assigned] -
CVE Modified by [email protected]
Jul. 23, 2021
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2021/07/22/7 [No Types Assigned] -
CVE Modified by [email protected]
Jul. 22, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/Z4UHHIGISO3FVRF4CQNJS4IKA25ATSFU/ [No Types Assigned] -
CVE Modified by [email protected]
Jul. 21, 2021
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html [No Types Assigned] -
CVE Modified by [email protected]
Jul. 21, 2021
Action Type Old Value New Value Added Reference https://www.debian.org/security/2021/dsa-4941 [No Types Assigned] -
CVE Modified by [email protected]
Jul. 20, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/07/msg00016.html [No Types Assigned] Added Reference https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html [No Types Assigned] Added Reference https://lists.debian.org/debian-lts-announce/2021/07/msg00014.html [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-33909
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-2021-33909
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.19 }} 0.02%
score
0.57558
percentile