CVE-2021-23351
SolarWinds Go-Proxyproto Denial of Service (DoS)
Description
The package github.com/pires/go-proxyproto before 0.5.0 are vulnerable to Denial of Service (DoS) via the parseVersion1() function. The reader in this package is a default bufio.Reader wrapping a net.Conn. It will read from the connection until it finds a newline. Since no limits are implemented in the code, a deliberately malformed V1 header could be used to exhaust memory in a server process using this code - and create a DoS. This can be exploited by sending a stream starting with PROXY and continuing to send data (which does not contain a newline) until the target stops acknowledging. The risk here is small, because only trusted sources should be allowed to send proxy protocol headers.
INFO
Published Date :
March 8, 2021, 5:15 a.m.
Last Modified :
Nov. 7, 2023, 3:30 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
1.2
Affected Products
The following products are affected by CVE-2021-23351
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
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-2021-23351.
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-2021-23351 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-23351 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 -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference Snyk https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4BNVGJMVI3ZTZ675EFPUHPGXCKCGSX46/ [No types assigned] Added Reference Snyk https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/C36IBVOZXRTWM7MGTRUTOM56P5RR74VU/ [No types assigned] Removed Reference Snyk https://lists.fedoraproject.org/archives/list/[email protected]/message/4BNVGJMVI3ZTZ675EFPUHPGXCKCGSX46/ Removed Reference Snyk https://lists.fedoraproject.org/archives/list/[email protected]/message/C36IBVOZXRTWM7MGTRUTOM56P5RR74VU/ -
Modified Analysis by [email protected]
Mar. 23, 2021
Action Type Old Value New Value Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/4BNVGJMVI3ZTZ675EFPUHPGXCKCGSX46/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/4BNVGJMVI3ZTZ675EFPUHPGXCKCGSX46/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/C36IBVOZXRTWM7MGTRUTOM56P5RR74VU/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/C36IBVOZXRTWM7MGTRUTOM56P5RR74VU/ Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Mar. 19, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/C36IBVOZXRTWM7MGTRUTOM56P5RR74VU/ [No Types Assigned] -
CVE Modified by [email protected]
Mar. 17, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/4BNVGJMVI3ZTZ675EFPUHPGXCKCGSX46/ [No Types Assigned] -
Initial Analysis by [email protected]
Mar. 11, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://github.com/pires/go-proxyproto/commit/7f48261db810703d173f27f3309a808cc2b49b8b No Types Assigned https://github.com/pires/go-proxyproto/commit/7f48261db810703d173f27f3309a808cc2b49b8b Patch, Third Party Advisory Changed Reference Type https://github.com/pires/go-proxyproto/issues/69 No Types Assigned https://github.com/pires/go-proxyproto/issues/69 Third Party Advisory Changed Reference Type https://github.com/pires/go-proxyproto/pull/71 No Types Assigned https://github.com/pires/go-proxyproto/pull/71 Patch, Third Party Advisory Changed Reference Type https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMPIRESGOPROXYPROTO-1081577 No Types Assigned https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMPIRESGOPROXYPROTO-1081577 Third Party Advisory Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:a:go-proxyproto_project:go-proxyproto:*:*:*:*:*:*:*:* versions up to (excluding) 0.5.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-23351 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-2021-23351
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.15 }} -0.02%
score
0.51362
percentile