CVE-2021-21424
Symfony User Enumeration Privilege Escalation Vulnerability
Description
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. The ability to enumerate users was possible without relevant permissions due to different handling depending on whether the user existed or not when attempting to use the switch users functionality. We now ensure that 403s are returned whether the user exists or not if a user cannot switch to a user or if the user does not exist. The patch for this issue is available for branch 3.4.
INFO
Published Date :
May 13, 2021, 4:15 p.m.
Last Modified :
Nov. 7, 2023, 3:30 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
3.9
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-2021-21424.
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-2021-21424 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-21424 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.
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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 GitHub, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KENRNLB3FYXYGDWRBH2PDBOZZKOD7VY4/ [No types assigned] Added Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VRUS2H2SSOQWNLBD35SKIWIDQEMV2PD3/ [No types assigned] Added Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UC7BND775DVZDQT3RMGD2HVB2PKLJDJW/ [No types assigned] Added Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RH7TMM5CHQYBFFGXWRPJDPB3SKCZXI2M/ [No types assigned] Removed Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/KENRNLB3FYXYGDWRBH2PDBOZZKOD7VY4/ Removed Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/VRUS2H2SSOQWNLBD35SKIWIDQEMV2PD3/ Removed Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/UC7BND775DVZDQT3RMGD2HVB2PKLJDJW/ Removed Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/RH7TMM5CHQYBFFGXWRPJDPB3SKCZXI2M/ -
CVE Modified by [email protected]
Jul. 12, 2023
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2023/07/msg00014.html [No Types Assigned] -
Reanalysis by [email protected]
Oct. 21, 2022
Action Type Old Value New Value Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/RH7TMM5CHQYBFFGXWRPJDPB3SKCZXI2M/ Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/RH7TMM5CHQYBFFGXWRPJDPB3SKCZXI2M/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/UC7BND775DVZDQT3RMGD2HVB2PKLJDJW/ Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/UC7BND775DVZDQT3RMGD2HVB2PKLJDJW/ Mailing List, Third Party Advisory Added CWE NIST CWE-203 -
Modified Analysis by [email protected]
Jun. 01, 2021
Action Type Old Value New Value Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/KENRNLB3FYXYGDWRBH2PDBOZZKOD7VY4/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/KENRNLB3FYXYGDWRBH2PDBOZZKOD7VY4/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/RH7TMM5CHQYBFFGXWRPJDPB3SKCZXI2M/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/RH7TMM5CHQYBFFGXWRPJDPB3SKCZXI2M/ Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/UC7BND775DVZDQT3RMGD2HVB2PKLJDJW/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/UC7BND775DVZDQT3RMGD2HVB2PKLJDJW/ Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/VRUS2H2SSOQWNLBD35SKIWIDQEMV2PD3/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/VRUS2H2SSOQWNLBD35SKIWIDQEMV2PD3/ Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* -
CVE Modified by [email protected]
May. 29, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/UC7BND775DVZDQT3RMGD2HVB2PKLJDJW/ [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/RH7TMM5CHQYBFFGXWRPJDPB3SKCZXI2M/ [No Types Assigned] -
CVE Modified by [email protected]
May. 28, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/KENRNLB3FYXYGDWRBH2PDBOZZKOD7VY4/ [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/VRUS2H2SSOQWNLBD35SKIWIDQEMV2PD3/ [No Types Assigned] -
Initial Analysis by [email protected]
May. 25, 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://github.com/symfony/symfony/commit/2a581d22cc621b33d5464ed65c4bc2057f72f011 No Types Assigned https://github.com/symfony/symfony/commit/2a581d22cc621b33d5464ed65c4bc2057f72f011 Patch, Third Party Advisory Changed Reference Type https://github.com/symfony/symfony/security/advisories/GHSA-5pv8-ppvj-4h68 No Types Assigned https://github.com/symfony/symfony/security/advisories/GHSA-5pv8-ppvj-4h68 Patch, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:* versions from (including) 2.8.0 up to (excluding) 3.4.48 *cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:* versions from (including) 4.0.0 up to (excluding) 4.4.23 *cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:* versions from (including) 5.0.0 up to (excluding) 5.2.8
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-21424 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-2021-21424
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.13 }} 0.02%
score
0.47427
percentile