CVE-2021-46143

expat: Integer overflow in doProlog in xmlparse.c

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In doProlog in xmlparse.c in Expat (aka libexpat) before 2.4.3, an integer overflow exists for m_groupSize.

En la función doProlog en el archivo xmlparse.c en Expat (también se conoce como libexpat) versiones anteriores a 2.4.3, se presenta un desbordamiento de enteros para m_groupSize.

expat (libexpat) is susceptible to a software flaw that causes process interruption. When processing a large number of prefixed XML attributes on a single tag can libexpat can terminate unexpectedly due to integer overflow. The highest threat from this vulnerability is to availability, confidentiality and integrity.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-01-06 CVE Reserved
2022-01-06 CVE Published
2024-08-04 CVE Updated
2024-08-04 First Exploit
2024-08-12 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-190: Integer Overflow or Wraparound

CAPEC

References (10)

URL	Tag	Source
https://security.netapp.com/advisory/ntap-20220121-0006	Third Party Advisory
https://www.tenable.com/security/tns-2022-05	Third Party Advisory

URL	Date	SRC
https://github.com/libexpat/libexpat/issues/532	2024-08-04

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2022/01/17/3	2022-10-06
https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf	2022-10-06
https://github.com/libexpat/libexpat/pull/538	2022-10-06

URL	Date	SRC
https://security.gentoo.org/glsa/202209-24	2022-10-06
https://www.debian.org/security/2022/dsa-5073	2022-10-06
https://access.redhat.com/security/cve/CVE-2021-46143	2022-11-08
https://bugzilla.redhat.com/show_bug.cgi?id=2044455	2022-11-08

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Libexpat Project Search vendor "Libexpat Project"		Libexpat Search vendor "Libexpat Project" for product "Libexpat"				< 2.4.3 Search vendor "Libexpat Project" for product "Libexpat" and version " < 2.4.3"		-		Affected
Netapp Search vendor "Netapp"		Active Iq Unified Manager Search vendor "Netapp" for product "Active Iq Unified Manager"				-		vmware_vsphere		Affected
Netapp Search vendor "Netapp"		Clustered Data Ontap Search vendor "Netapp" for product "Clustered Data Ontap"				-		-		Affected
Netapp Search vendor "Netapp"		Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller"				h610c Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h610c"		-		Affected
Netapp Search vendor "Netapp"		Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller"				h610s Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h610s"		-		Affected
Netapp Search vendor "Netapp"		Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller"				h615c Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h615c"		-		Affected
Netapp Search vendor "Netapp"		Oncommand Workflow Automation Search vendor "Netapp" for product "Oncommand Workflow Automation"				-		-		Affected
Netapp Search vendor "Netapp"		Solidfire \& Hci Management Node Search vendor "Netapp" for product "Solidfire \& Hci Management Node"				-		-		Affected
Tenable Search vendor "Tenable"		Nessus Search vendor "Tenable" for product "Nessus"				< 8.15.3 Search vendor "Tenable" for product "Nessus" and version " < 8.15.3"		-		Affected
Tenable Search vendor "Tenable"		Nessus Search vendor "Tenable" for product "Nessus"				>= 10.0.0 < 10.1.1 Search vendor "Tenable" for product "Nessus" and version " >= 10.0.0 < 10.1.1"		-		Affected
Siemens Search vendor "Siemens"		Sinema Remote Connect Server Search vendor "Siemens" for product "Sinema Remote Connect Server"				< 3.1 Search vendor "Siemens" for product "Sinema Remote Connect Server" and version " < 3.1"		-		Affected