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CVE-2021-3516

Date: June 1, 2021

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.

Language: C

Severity Score

Related Resources (18)

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://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BZOMV5J4PMZAORVT64BKLV6YIZAFDGX6/
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-3516
https://gitlab.gnome.org/GNOME/libxml2/-/issues/230
https://access.redhat.com/security/cve/CVE-2021-3516
https://security.archlinux.org/CVE-2021-3516
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QVM4UJ3376I6ZVOYMHBNX4GY3NIV52WV/
https://bugzilla.redhat.com/show_bug.cgi?id=1954225
https://www.oracle.com/security-alerts/cpujan2022.html
https://nvd.nist.gov/vuln/detail/CVE-2021-3516
https://github.com/GNOME/libxml2/commit/1358d157d0bd83be1dfe356a69213df9fac0b539
https://security-tracker.debian.org/tracker/CVE-2021-3516
https://security.gentoo.org/glsa/202107-05
https://lists.debian.org/debian-lts-announce/2021/05/msg00008.html
https://gitlab.gnome.org/GNOME/libxml2/-/commit/1358d157d0bd83be1dfe356a69213df9fac0b539
https://security.netapp.com/advisory/ntap-20210716-0005/
https://www.mend.io/vulnerability-database/CVE-2021-3516

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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