CVE-2021-43174
Routinator RRDP XML Gzip Denial of Service
Description
NLnet Labs Routinator versions 0.9.0 up to and including 0.10.1, support the gzip transfer encoding when querying RRDP repositories. This encoding can be used by an RRDP repository to cause an out-of-memory crash in these versions of Routinator. RRDP uses XML which allows arbitrary amounts of white space in the encoded data. The gzip scheme compresses such white space extremely well, leading to very small compressed files that become huge when being decompressed for further processing, big enough that Routinator runs out of memory when parsing input data waiting for the next XML element.
INFO
Published Date :
Nov. 9, 2021, 5:15 p.m.
Last Modified :
April 4, 2022, 1:44 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-2021-43174.
| URL | Resource |
|---|---|
| https://www.debian.org/security/2022/dsa-5041 | Third Party Advisory |
| https://www.nlnetlabs.nl/downloads/routinator/CVE-2021-43172_CVE-2021-43173_CVE-2021-43174.txt | 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-2021-43174 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-43174 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]
Apr. 04, 2022
Action Type Old Value New Value Changed Reference Type https://www.debian.org/security/2022/dsa-5041 No Types Assigned https://www.debian.org/security/2022/dsa-5041 Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jan. 12, 2022
Action Type Old Value New Value Added Reference https://www.debian.org/security/2022/dsa-5041 [No Types Assigned] Added CWE NLnet Labs CWE-1325 -
Modified Analysis by [email protected]
Nov. 28, 2021
Action Type Old Value New Value -
Initial Analysis by [email protected]
Nov. 12, 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://www.nlnetlabs.nl/downloads/routinator/CVE-2021-43172_CVE-2021-43173_CVE-2021-43174.txt No Types Assigned https://www.nlnetlabs.nl/downloads/routinator/CVE-2021-43172_CVE-2021-43173_CVE-2021-43174.txt Vendor Advisory Added CWE NIST CWE-787 Added CPE Configuration OR *cpe:2.3:a:nlnetlabs:routinator:*:*:*:*:*:*:*:* versions from (including) 0.9.0 up to (excluding) 0.10.2
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-43174 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-2021-43174
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.13 }} 0.04%
score
0.49372
percentile