CVE-2021-3516
"Libxml2 xmllint Use-after-Free Vulnerability"
Description
There's a flaw in libxml2's xmllint in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by xmllint could trigger a use-after-free. The greatest impact of this flaw is to confidentiality, integrity, and availability.
INFO
Published Date :
June 1, 2021, 2:15 p.m.
Last Modified :
Nov. 7, 2023, 3:38 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2021-3516 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-2021-3516
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-2021-3516.
| URL | Resource |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1954225 | Issue Tracking Third Party Advisory |
| https://gitlab.gnome.org/GNOME/libxml2/-/commit/1358d157d0bd83be1dfe356a69213df9fac0b539 | Patch Third Party Advisory |
| https://gitlab.gnome.org/GNOME/libxml2/-/issues/230 | Exploit Issue Tracking Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2021/05/msg00008.html | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BZOMV5J4PMZAORVT64BKLV6YIZAFDGX6/ | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QVM4UJ3376I6ZVOYMHBNX4GY3NIV52WV/ | |
| https://security.gentoo.org/glsa/202107-05 | Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20210716-0005/ | Third Party Advisory |
| https://www.oracle.com/security-alerts/cpujan2022.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).
None
Automatic monitor github cve using Github Actions
Python
Fuzzing with the generated argument
fuzz argv-information afl afl-fuzz fuzzer k-means k-means-clustering
Makefile C Shell C++ HTML JavaScript Rich Text Format 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-2021-3516 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-3516 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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QVM4UJ3376I6ZVOYMHBNX4GY3NIV52WV/ [No types assigned] Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BZOMV5J4PMZAORVT64BKLV6YIZAFDGX6/ [No types assigned] Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/QVM4UJ3376I6ZVOYMHBNX4GY3NIV52WV/ Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/BZOMV5J4PMZAORVT64BKLV6YIZAFDGX6/ -
Modified Analysis by [email protected]
Mar. 01, 2022
Action Type Old Value New Value 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 CWE NIST CWE-416 Added CPE Configuration OR *cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:* -
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] -
Modified Analysis by [email protected]
Sep. 14, 2021
Action Type Old Value New Value Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/BZOMV5J4PMZAORVT64BKLV6YIZAFDGX6/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/BZOMV5J4PMZAORVT64BKLV6YIZAFDGX6/ Mailing List, Third Party Advisory Changed Reference Type https://security.gentoo.org/glsa/202107-05 No Types Assigned https://security.gentoo.org/glsa/202107-05 Third Party Advisory Changed Reference Type https://security.netapp.com/advisory/ntap-20210716-0005/ No Types Assigned https://security.netapp.com/advisory/ntap-20210716-0005/ Third Party Advisory Changed CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:clustered_data_ontap_antivirus_connector:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jul. 16, 2021
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20210716-0005/ [No Types Assigned] -
CVE Modified by [email protected]
Jul. 06, 2021
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202107-05 [No Types Assigned] -
CVE Modified by [email protected]
Jun. 14, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/BZOMV5J4PMZAORVT64BKLV6YIZAFDGX6/ [No Types Assigned] -
Initial Analysis by [email protected]
Jun. 11, 2021
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1954225 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1954225 Issue Tracking, Third Party Advisory Changed Reference Type https://gitlab.gnome.org/GNOME/libxml2/-/commit/1358d157d0bd83be1dfe356a69213df9fac0b539 No Types Assigned https://gitlab.gnome.org/GNOME/libxml2/-/commit/1358d157d0bd83be1dfe356a69213df9fac0b539 Patch, Third Party Advisory Changed Reference Type https://gitlab.gnome.org/GNOME/libxml2/-/issues/230 No Types Assigned https://gitlab.gnome.org/GNOME/libxml2/-/issues/230 Exploit, Issue Tracking, Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/05/msg00008.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/05/msg00008.html Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/QVM4UJ3376I6ZVOYMHBNX4GY3NIV52WV/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/QVM4UJ3376I6ZVOYMHBNX4GY3NIV52WV/ Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:xmlsoft:xmllint:*:*:*:*:*:*:*:* versions up to (excluding) 2.9.11 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:a:redhat:jboss_core_services:-:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jun. 07, 2021
Action Type Old Value New Value Added Reference https://gitlab.gnome.org/GNOME/libxml2/-/commit/1358d157d0bd83be1dfe356a69213df9fac0b539 [No Types Assigned] Added Reference https://gitlab.gnome.org/GNOME/libxml2/-/issues/230 [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/QVM4UJ3376I6ZVOYMHBNX4GY3NIV52WV/ [No Types Assigned] Added Reference https://lists.debian.org/debian-lts-announce/2021/05/msg00008.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-2021-3516 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-2021-3516
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.15 }} 0.02%
score
0.50097
percentile