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CVE-2021-3518

Date: May 18, 2021

There's a flaw in libxml2 in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by an application linked with libxml2 could trigger a use-after-free. The greatest impact from this flaw is to confidentiality, integrity, and availability.

Language: C

Severity Score

Related Resources (26)

https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E
https://access.redhat.com/security/cve/CVE-2021-3518
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BZOMV5J4PMZAORVT64BKLV6YIZAFDGX6/
https://support.apple.com/kb/HT212604
https://support.apple.com/kb/HT212602
https://support.apple.com/kb/HT212601
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-3518
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QVM4UJ3376I6ZVOYMHBNX4GY3NIV52WV/
https://support.apple.com/kb/HT212605
https://bugzilla.redhat.com/show_bug.cgi?id=1954242
https://security-tracker.debian.org/tracker/CVE-2021-3518
https://security.gentoo.org/glsa/202107-05
https://www.oracle.com/security-alerts/cpuapr2022.html
https://www.oracle.com/security-alerts/cpuoct2021.html
http://seclists.org/fulldisclosure/2021/Jul/54
https://security.netapp.com/advisory/ntap-20210625-0002/
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E
https://nvd.nist.gov/vuln/detail/CVE-2021-3518
http://seclists.org/fulldisclosure/2021/Jul/59
https://github.com/GNOME/libxml2/commit/1098c30a040e72a4654968547f415be4e4c40fe7
https://lists.debian.org/debian-lts-announce/2021/05/msg00008.html
https://www.oracle.com/security-alerts/cpujul2022.html
https://security.alpinelinux.org/vuln/CVE-2021-3518
http://seclists.org/fulldisclosure/2021/Jul/55
http://seclists.org/fulldisclosure/2021/Jul/58
https://www.mend.io/vulnerability-database/CVE-2021-3518

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
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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