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cnvdChina National Vulnerability DatabaseCNVD-2022-04543
HistoryJan 14, 2022 - 12:00 a.m.

Expat nextScaffoldPart buffer overflow vulnerability

2022-01-1400:00:00
China National Vulnerability Database
www.cnvd.org.cn
8

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

Expat is a fast streaming XML parser written in C. A buffer overflow vulnerability exists in versions of Expat prior to 2.4.3, which stems from a boundary error in xmlparse.c in nextScaffoldPart when processing untrusted input. A remote attacker could exploit this vulnerability to execute arbitrary code on the system.

CPENameOperatorVersion
james clark expatlt2.4.3

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P