CVE-2021-39923
"Wireshark PNRP DoS"
Description
Large loop in the PNRP 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
INFO
Published Date :
Nov. 19, 2021, 5:15 p.m.
Last Modified :
March 9, 2022, 9:42 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-39923.
| URL | Resource |
|---|---|
| https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39923.json | Third Party Advisory |
| https://gitlab.com/wireshark/wireshark/-/issues/17684 | Issue Tracking Patch Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2021/12/msg00015.html | Mailing List Third Party Advisory |
| https://www.debian.org/security/2021/dsa-5019 | Third Party Advisory |
| https://www.wireshark.org/security/wnpa-sec-2021-11.html | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-39923 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-39923 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Mar. 09, 2022
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/12/msg00015.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/12/msg00015.html Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Dec. 26, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/12/msg00015.html [No Types Assigned] -
Modified Analysis by [email protected]
Dec. 15, 2021
Action Type Old Value New Value Changed Reference Type https://gitlab.com/wireshark/wireshark/-/issues/17684 No Types Assigned https://gitlab.com/wireshark/wireshark/-/issues/17684 Issue Tracking, Patch, Vendor Advisory Changed Reference Type https://www.debian.org/security/2021/dsa-5019 No Types Assigned https://www.debian.org/security/2021/dsa-5019 Third Party Advisory Changed Reference Type https://www.wireshark.org/security/wnpa-sec-2021-11.html No Types Assigned https://www.wireshark.org/security/wnpa-sec-2021-11.html Vendor Advisory Removed CWE NIST CWE-476 Added CWE NIST CWE-834 Changed CPE Configuration OR *cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:* versions from (including) 3.4.0 up to (including) 3.4.9 OR *cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:* versions from (including) 3.2.0 up to (including) 3.2.17 *cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:* versions from (including) 3.4.0 up to (including) 3.4.9 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Dec. 11, 2021
Action Type Old Value New Value Added Reference https://www.debian.org/security/2021/dsa-5019 [No Types Assigned] -
CVE Modified by [email protected]
Dec. 07, 2021
Action Type Old Value New Value Changed Description NULL pointer exception in the IPPUSB dissector in Wireshark 3.4.0 to 3.4.9 allows denial of service via packet injection or crafted capture file Large loop in the PNRP 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 Removed Reference https://gitlab.com/wireshark/wireshark/-/issues/17705 [Exploit, Issue Tracking, Patch, Third Party Advisory] Removed Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/A6AJFIYIHS3TYDD2EBYBJ5KKE52X34BJ/ [No Types Assigned] Removed Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/YEWTIRMC2MFQBZ2O5M4CJHJM4JPBHLXH/ [No Types Assigned] Removed Reference https://www.wireshark.org/security/wnpa-sec-2021-15.html [Vendor Advisory] Added Reference https://www.wireshark.org/security/wnpa-sec-2021-11.html [No Types Assigned] Added Reference https://gitlab.com/wireshark/wireshark/-/issues/17684 [No Types Assigned] -
CVE Modified by [email protected]
Dec. 03, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/A6AJFIYIHS3TYDD2EBYBJ5KKE52X34BJ/ [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/YEWTIRMC2MFQBZ2O5M4CJHJM4JPBHLXH/ [No Types Assigned] -
Initial Analysis by [email protected]
Nov. 24, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39923.json No Types Assigned https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39923.json Third Party Advisory Changed Reference Type https://gitlab.com/wireshark/wireshark/-/issues/17705 No Types Assigned https://gitlab.com/wireshark/wireshark/-/issues/17705 Exploit, Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://www.wireshark.org/security/wnpa-sec-2021-15.html No Types Assigned https://www.wireshark.org/security/wnpa-sec-2021-15.html Vendor Advisory Added CWE NIST CWE-476 Added CPE Configuration OR *cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:* versions from (including) 3.4.0 up to (including) 3.4.9
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-39923 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-39923
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.20 }} 0.06%
score
0.58178
percentile