CVE-2021-4203
Linux Kernel Socket Use-After-Free Read Vulnerability
Description
A use-after-free read flaw was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()) in the Linux kernel. In this flaw, an attacker with a user privileges may crash the system or leak internal kernel information.
INFO
Published Date :
March 25, 2022, 7:15 p.m.
Last Modified :
Nov. 7, 2023, 3:40 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.2
Exploitability Score :
1.6
Public PoC/Exploit Available at Github
CVE-2021-4203 has a 1 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-2021-4203
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-2021-4203.
| URL | Resource |
|---|---|
| https://bugs.chromium.org/p/project-zero/issues/detail?id=2230&can=7&q=modified-after%3Atoday-30&sort=-modified&colspec=ID%20Type%20Status%20Priority%20Milestone%20Owner%20Summary%20Modified%20Cve&cells=tiles&redir=1 | Exploit Issue Tracking Patch Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2036934 | Issue Tracking Patch Third Party Advisory |
| https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=35306eb23814 | Patch Vendor Advisory |
| https://lore.kernel.org/netdev/20210929225750.2548112-1-eric.dumazet%40gmail.com/T/ | |
| https://security.netapp.com/advisory/ntap-20221111-0003/ | Third Party Advisory |
| https://www.oracle.com/security-alerts/cpujul2022.html | Patch 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).
Automates the function name extraction from the list of CVEs of a given SOUP and perform search operation against the static and dynamic function trace database.
android dast frida security-tools
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-4203 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-4203 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 Red Hat, Inc. https://lore.kernel.org/netdev/20210929225750.2548112-1-eric.dumazet%40gmail.com/T/ [No types assigned] Removed Reference Red Hat, Inc. https://lore.kernel.org/netdev/[email protected]/T/ Removed CWE Red Hat, Inc. CWE-416 -
Modified Analysis by [email protected]
Dec. 08, 2022
Action Type Old Value New Value Changed Reference Type https://security.netapp.com/advisory/ntap-20221111-0003/ No Types Assigned https://security.netapp.com/advisory/ntap-20221111-0003/ Third Party Advisory Changed Reference Type https://www.oracle.com/security-alerts/cpujul2022.html No Types Assigned https://www.oracle.com/security-alerts/cpujul2022.html Patch, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* *cpe:2.3:a:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:* versions from (including) 11.0.0 up to (including) 11.70.2 *cpe:2.3:a:netapp:element_software:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:bootstrap_os:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:* 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:h300s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:22.1.3:*:*:*:*:*:*:* *cpe:2.3:a:oracle:communications_cloud_native_core_network_exposure_function:22.1.1:*:*:*:*:*:*:* *cpe:2.3:a:oracle:communications_cloud_native_core_policy:22.2.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Nov. 14, 2022
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20221111-0003/ [No Types Assigned] -
CVE Modified by [email protected]
Jul. 25, 2022
Action Type Old Value New Value Added Reference https://www.oracle.com/security-alerts/cpujul2022.html [No Types Assigned] -
CPE Deprecation Remap by [email protected]
Jun. 22, 2022
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:linux:linux_kernel:5.15:rc2:*:*:*:*:*:* OR *cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
Jun. 22, 2022
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:linux:linux_kernel:5.15:-:*:*:*:*:*:* OR *cpe:2.3:o:linux:linux_kernel:5.15:-:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
Jun. 22, 2022
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (excluding) 5.15 OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (excluding) 5.15 -
CPE Deprecation Remap by [email protected]
Jun. 22, 2022
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:linux:linux_kernel:5.15:rc3:*:*:*:*:*:* OR *cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
Jun. 22, 2022
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:linux:linux_kernel:5.15:rc1:*:*:*:*:*:* OR *cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:* -
Initial Analysis by [email protected]
Apr. 07, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:M/Au:S/C:P/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H Changed Reference Type https://bugs.chromium.org/p/project-zero/issues/detail?id=2230&can=7&q=modified-after%3Atoday-30&sort=-modified&colspec=ID%20Type%20Status%20Priority%20Milestone%20Owner%20Summary%20Modified%20Cve&cells=tiles&redir=1 No Types Assigned https://bugs.chromium.org/p/project-zero/issues/detail?id=2230&can=7&q=modified-after%3Atoday-30&sort=-modified&colspec=ID%20Type%20Status%20Priority%20Milestone%20Owner%20Summary%20Modified%20Cve&cells=tiles&redir=1 Exploit, Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=2036934 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=2036934 Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=35306eb23814 No Types Assigned https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=35306eb23814 Patch, Vendor Advisory Changed Reference Type https://lore.kernel.org/netdev/[email protected]/T/ No Types Assigned https://lore.kernel.org/netdev/[email protected]/T/ Mailing List, Patch, Vendor Advisory Added CWE NIST CWE-362 Added CWE NIST CWE-416 Added CPE Configuration OR *cpe:2.3:a:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.15 *cpe:2.3:a:linux:linux_kernel:5.15:-:*:*:*:*:*:* *cpe:2.3:a:linux:linux_kernel:5.15:rc1:*:*:*:*:*:* *cpe:2.3:a:linux:linux_kernel:5.15:rc2:*:*:*:*:*:* *cpe:2.3:a:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-4203 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-2021-4203
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.16 }} 0.03%
score
0.52801
percentile