Vulnerability CVE-2021-30485

Vulnerability Name:

CVE-2021-30485 (CCN-199764)

Assigned:

2021-04-11

Published:

2021-04-11

Updated:

2022-05-16

Summary:

An issue was discovered in libezxml.a in ezXML 0.8.6. The function ezxml_internal_dtd(), while parsing a crafted XML file, performs incorrect memory handling, leading to a NULL pointer dereference while running strcmp() on a NULL pointer.

CVSS v3 Severity:

6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
5.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:U/RC:R)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

5.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
4.9 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:U/RC:R)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

CVSS v2 Severity:

4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Medium Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:C)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Complete

Vulnerability Type:

CWE-476

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2021-30485

Source: XF
Type: UNKNOWN
ezxml-cve202130485-dos(199764)

Source: MLIST
Type: Third Party Advisory
[debian-lts-announce] 20210708 [SECURITY] [DLA 2705-1] scilab security update

Source: CCN
Type: SourceForge ezXML Project
#25 Null pointer dereference in ezxml_internal_dtd()

Source: MISC
Type: Exploit, Patch, Third Party Advisory
https://sourceforge.net/p/ezxml/bugs/25/

Vulnerable Configuration:

Configuration 1:

cpe:/a:ezxml_project:ezxml:0.8.6:*:*:*:*:*:*:*

Configuration 2:

cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/a:ezxml_project:ezxml:0.8.6:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:7498	P	fribidi-1.0.10-150400.3.3.1 on GA media (Moderate)	2023-06-12
oval:org.opensuse.security:def:6330	P	Security update for pidgin (Important)	2022-05-16
oval:org.opensuse.security:def:6332	P	Security update for podofo (Moderate)	2022-05-16
oval:org.opensuse.security:def:102262	P	Security update for salt (Important)	2022-03-30
oval:org.opensuse.security:def:102159	P	Security update for the Linux Kernel (Important)	2022-01-14
oval:org.opensuse.security:def:99172	P	(Moderate)	2021-12-13
oval:org.opensuse.security:def:1497	P	Security update for netcdf (Important)	2021-12-02
oval:org.opensuse.security:def:111811	P	Security update for netcdf (Important)	2021-12-02
oval:org.opensuse.security:def:68587	P	Security update for netcdf (Important)	2021-12-02
oval:org.opensuse.security:def:6248	P	Security update for netcdf (Important)	2021-12-02
oval:org.opensuse.security:def:101864	P	Security update for netcdf (Important)	2021-12-02
oval:org.opensuse.security:def:67337	P	Security update for netcdf (Important)	2021-12-02
oval:org.opensuse.security:def:102077	P	Security update for netcdf (Important)	2021-12-02
oval:org.opensuse.security:def:76405	P	Security update for netcdf (Important)	2021-12-02
oval:org.opensuse.security:def:1202	P	Security update for netcdf (Important)	2021-12-02
oval:org.opensuse.security:def:67421	P	Security update for netcdf (Important)	2021-12-02
oval:org.opensuse.security:def:9061	P	Security update for netcdf (Important)	2021-11-30
oval:org.opensuse.security:def:6241	P	Security update for netcdf (Important)	2021-11-30
oval:org.opensuse.security:def:67330	P	Security update for netcdf (Important)	2021-11-30
oval:org.opensuse.security:def:5900	P	Security update for netcdf (Important)	2021-11-30
oval:org.opensuse.security:def:66989	P	Security update for netcdf (Important)	2021-11-30
oval:org.opensuse.security:def:108827	P	Security update for netcdf (Important)	2021-11-30
oval:org.opensuse.security:def:95448	P	Security update for netcdf (Important)	2021-11-30
oval:org.opensuse.security:def:76398	P	Security update for netcdf (Important)	2021-11-30
oval:org.opensuse.security:def:105667	P	Security update for netcdf (Important)	2021-11-30
oval:org.opensuse.security:def:92027	P	Security update for netcdf (Important)	2021-11-30
oval:org.opensuse.security:def:76057	P	Security update for netcdf (Important)	2021-11-30
oval:org.opensuse.security:def:8866	P	Security update for netcdf (Important)	2021-11-30
oval:org.opensuse.security:def:102161	P	Security update for netcdf (Important)	2021-11-30
oval:org.opensuse.security:def:105862	P	Security update for netcdf (Important)	2021-11-30
oval:org.opensuse.security:def:92222	P	Security update for netcdf (Important)	2021-11-30
oval:org.opensuse.security:def:98977	P	Security update for netcdf (Important)	2021-11-30
oval:org.opensuse.security:def:111800	P	Security update for netcdf (Important)	2021-11-30
oval:org.opensuse.security:def:111142	P	Security update for netcdf (Important)	2021-11-26
oval:org.opensuse.security:def:108825	P	Security update for netcdf (Important)	2021-11-25
oval:org.opensuse.security:def:95446	P	Security update for netcdf (Important)	2021-11-25
oval:org.opensuse.security:def:76396	P	Security update for netcdf (Important)	2021-11-25
oval:org.opensuse.security:def:76055	P	Security update for netcdf (Important)	2021-11-25
oval:org.opensuse.security:def:111797	P	Security update for netcdf (Important)	2021-11-25
oval:org.opensuse.security:def:8675	P	Security update for netcdf (Important)	2021-11-25
oval:org.opensuse.security:def:117852	P	Security update for netcdf (Important)	2021-11-25
oval:org.opensuse.security:def:6238	P	Security update for netcdf (Important)	2021-11-25
oval:org.opensuse.security:def:67327	P	Security update for netcdf (Important)	2021-11-25
oval:org.opensuse.security:def:108928	P	Security update for netcdf (Important)	2021-11-25
oval:org.opensuse.security:def:95549	P	Security update for netcdf (Important)	2021-11-25
oval:org.opensuse.security:def:111798	P	Security update for netcdf (Important)	2021-11-25
oval:org.opensuse.security:def:67419	P	Security update for netcdf (Important)	2021-11-25
oval:org.opensuse.security:def:6239	P	Security update for netcdf (Important)	2021-11-25
oval:org.opensuse.security:def:67328	P	Security update for netcdf (Important)	2021-11-25
oval:org.opensuse.security:def:76395	P	Security update for netcdf (Important)	2021-11-25
oval:org.opensuse.security:def:5898	P	Security update for netcdf (Important)	2021-11-25
oval:org.opensuse.security:def:66987	P	Security update for netcdf (Important)	2021-11-25

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