CVE-2021-27918
Go encoding/xml Infinite Element TokenReader Crash
Description
encoding/xml in Go before 1.15.9 and 1.16.x before 1.16.1 has an infinite loop if a custom TokenReader (for xml.NewTokenDecoder) returns EOF in the middle of an element. This can occur in the Decode, DecodeElement, or Skip method.
INFO
Published Date :
March 11, 2021, 12:15 a.m.
Last Modified :
Nov. 21, 2024, 5:58 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update the affected golang and related packages.
- For SUSE, apply the appropriate security update.
- For Splunk Enterprise, upgrade to a patched version.
Public PoC/Exploit Available at Github
CVE-2021-27918 has a 5 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2021-27918.
| URL | Resource |
|---|---|
| https://groups.google.com/g/golang-announce/c/MfiLYjG-RAw | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202208-02 | Third Party Advisory |
| https://groups.google.com/g/golang-announce/c/MfiLYjG-RAw | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202208-02 | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-27918 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-2021-27918
weaknesses.
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).
None
Dockerfile
None
Dockerfile
None
Dockerfile
None
Dockerfile
Container image with malware and crypto miner for testing purposes
container crypto cryptominer dockerfile eicar image malware test xmrig
Dockerfile
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-27918 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-27918 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 af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://groups.google.com/g/golang-announce/c/MfiLYjG-RAw Added Reference https://security.gentoo.org/glsa/202208-02 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Dec. 13, 2022
Action Type Old Value New Value Changed Reference Type https://security.gentoo.org/glsa/202208-02 No Types Assigned https://security.gentoo.org/glsa/202208-02 Third Party Advisory -
CVE Modified by [email protected]
Aug. 04, 2022
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202208-02 [No Types Assigned] -
Initial Analysis by [email protected]
Mar. 18, 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://groups.google.com/g/golang-announce/c/MfiLYjG-RAw No Types Assigned https://groups.google.com/g/golang-announce/c/MfiLYjG-RAw Mailing List, Third Party Advisory Added CWE NIST CWE-835 Added CPE Configuration OR *cpe:2.3:a:golang:go:*:*:*:*:*:*:*:* versions up to (excluding) 1.15.9 *cpe:2.3:a:golang:go:*:*:*:*:*:*:*:* versions from (including) 1.16.0 up to (excluding) 1.16.1
Vulnerability Scoring Details
Base CVSS Score: 7.5
Base CVSS Score: 5
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.03 }} -0.03%
score
0.05871
percentile