Vulnerability Name:

CVE-2021-39921 (CCN-213688)

Assigned:2021-11-17
Published:2021-11-17
Updated:2022-10-28
Summary:NULL pointer exception in the Modbus dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.3 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:R)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
4.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
3.6 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/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): Low
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
4.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-476
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2021-39921

Source: XF
Type: UNKNOWN
wireshark-cve202139921-dos(213688)

Source: CONFIRM
Type: Third Party Advisory
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39921.json

Source: MISC
Type: Exploit, Issue Tracking, Patch, Third Party Advisory
https://gitlab.com/wireshark/wireshark/-/issues/17703

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20211226 [SECURITY] [DLA 2849-1] wireshark security update

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-3747cf6107

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-97bd631e0a

Source: GENTOO
Type: Third Party Advisory
GLSA-202210-04

Source: DEBIAN
Type: Third Party Advisory
DSA-5019

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2021-39921

Source: CCN
Type: Wireshark advisory wnpa-sec-2021-14
Modbus dissector crash

Source: MISC
Type: Vendor Advisory
https://www.wireshark.org/security/wnpa-sec-2021-14.html

Vulnerable Configuration:Configuration 1:
  • cpe:/a:wireshark:wireshark:*:*:*:*:*:*:*:* (Version >= 3.2.0 and <= 3.2.17)
  • OR cpe:/a:wireshark:wireshark:*:*:*:*:*:*:*:* (Version >= 3.4.0 and <= 3.4.9)

    • Configuration 2:
  • cpe:/o:fedoraproject:fedora:34:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:35:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:wireshark:wireshark:3.2.0:*:*:*:*:*:*:*
  • OR cpe:/a:wireshark:wireshark:3.4.0:*:*:*:*:*:*:*
  • OR cpe:/a:wireshark:wireshark:3.2.17:*:*:*:*:*:*:*
  • OR cpe:/a:wireshark:wireshark:3.4.9:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:7698
    P
    		libwireshark15-3.6.13-150000.3.89.1 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:7983
    P
    		wireshark-devel-3.6.13-150000.3.89.1 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:3722
    P
    		Security update for java-1_8_0-openjdk (Important) (in QA)
    2022-08-04
    oval:org.opensuse.security:def:3360
    P
    		rzsz-0.12.21~rc-1001.3.1 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:3540
    P
    		krb5-1.12.5-40.37.7 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:3106
    P
    		ibus-chewing-1.4.14-4.11 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:94816
    P
    		python3-waitress-1.4.3-3.3.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:94736
    P
    		libwireshark15-3.6.2-3.71.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:94652
    P
    		libksba-devel-1.3.5-2.14 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:94990
    P
    		wireshark-devel-3.6.2-3.71.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:112914
    P
    		libwireshark14-3.4.10-1.1 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:111160
    P
    		Security update for wireshark (Moderate)
    2021-12-10
    oval:org.opensuse.security:def:76410
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:4171
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:117545
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:101739
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:65324
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:73933
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:108195
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:101365
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:64629
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:4235
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:111816
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:117709
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:821
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:67342
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:74328
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:101529
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:64811
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:6253
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:1048
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:74392
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:101552
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:65260
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:73751
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    oval:org.opensuse.security:def:108031
    P
    		Security update for wireshark (Moderate)
    2021-12-06
    BACK
    wireshark wireshark *
    wireshark wireshark *
    fedoraproject fedora 34
    fedoraproject fedora 35
    debian debian linux 9.0
    wireshark wireshark 3.2.0
    wireshark wireshark 3.4.0
    wireshark wireshark 3.2.17
    wireshark wireshark 3.4.9