Vulnerability Report

CVE-2022-23852

Title: Expat signed integer overflow in XML_GetBuffer

Integer Overflow

Proof Of Concept

PoC Available for CVE-2022-23852

CWE Category CWE-190
Published Date Jan 24, 2022
Modified Date May 05, 2025
Exploit Status Available
Score 9.8 CVSS v3.1
Exploit Probability (EPSS)
1.62%

Vulnerability Summary

CVE-2022-23852: Expat (aka libexpat) before 2.4.4 has a signed integer overflow in XML_GetBuffer, for configurations with a nonzero XML_CONTEXT_BYTES.

Impacted Vendors

L
libexpat_project 1
T
tenable 1
N
netapp 2
S
siemens 1
O
oracle 1
N
nessus 1

Reference Links

https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf https://github.com/libexpat/libexpat/pull/550 https://lists.debian.org/debian-lts-announce/2022/03/msg00007.html https://security.gentoo.org/glsa/202209-24 https://security.netapp.com/advisory/ntap-20220217-0001/ https://www.debian.org/security/2022/dsa-5073 https://www.oracle.com/security-alerts/cpuapr2022.html https://www.tenable.com/security/tns-2022-05 https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf https://github.com/libexpat/libexpat/pull/550 https://lists.debian.org/debian-lts-announce/2022/03/msg00007.html https://security.gentoo.org/glsa/202209-24 https://security.netapp.com/advisory/ntap-20220217-0001/ https://www.debian.org/security/2022/dsa-5073 https://www.oracle.com/security-alerts/cpuapr2022.html https://www.tenable.com/security/tns-2022-05
CVSS v3.1
Source Entity [email protected]
Severity CRITICAL
9.8
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v3.1
Source Entity 134c704f-9b21-4f2e-91b3-4a467353bcc0
Severity CRITICAL
9.8
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
Source Entity [email protected]
Severity HIGH
7.5
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:N/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2022-23852 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/Satheesh575555/external_expat_AOSP10_r33_CVE-2022-23852
View Code
MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Stack

No specific products linked.