CVE-2020-26247
"Nokogiri XXE SSRF RCE"
Description
Nokogiri is a Rubygem providing HTML, XML, SAX, and Reader parsers with XPath and CSS selector support. In Nokogiri before version 1.11.0.rc4 there is an XXE vulnerability. XML Schemas parsed by Nokogiri::XML::Schema are trusted by default, allowing external resources to be accessed over the network, potentially enabling XXE or SSRF attacks. This behavior is counter to the security policy followed by Nokogiri maintainers, which is to treat all input as untrusted by default whenever possible. This is fixed in Nokogiri version 1.11.0.rc4.
INFO
Published Date :
Dec. 30, 2020, 7:15 p.m.
Last Modified :
Oct. 19, 2022, 6:53 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
2.8
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-2020-26247.
| URL | Resource |
|---|---|
| https://github.com/sparklemotion/nokogiri/commit/9c87439d9afa14a365ff13e73adc809cb2c3d97b | Patch Third Party Advisory |
| https://github.com/sparklemotion/nokogiri/releases/tag/v1.11.0.rc4 | Release Notes Third Party Advisory |
| https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-vr8q-g5c7-m54m | Mitigation Third Party Advisory |
| https://hackerone.com/reports/747489 | Permissions Required |
| https://lists.debian.org/debian-lts-announce/2021/06/msg00007.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/10/msg00018.html | Mailing List Third Party Advisory |
| https://rubygems.org/gems/nokogiri | Product Third Party Advisory |
| https://security.gentoo.org/glsa/202208-29 | Third Party 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-2020-26247 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-26247 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]
Oct. 19, 2022
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2022/10/msg00018.html No Types Assigned https://lists.debian.org/debian-lts-announce/2022/10/msg00018.html Mailing List, Third Party Advisory Changed CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Oct. 12, 2022
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2022/10/msg00018.html [No Types Assigned] -
Modified Analysis by [email protected]
Sep. 02, 2022
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/06/msg00007.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/06/msg00007.html Mailing List, Third Party Advisory Changed Reference Type https://security.gentoo.org/glsa/202208-29 No Types Assigned https://security.gentoo.org/glsa/202208-29 Third Party Advisory Added CWE NIST CWE-611 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Aug. 15, 2022
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202208-29 [No Types Assigned] -
CVE Modified by [email protected]
Jun. 06, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/06/msg00007.html [No Types Assigned] -
Reanalysis by [email protected]
Jan. 20, 2021
Action Type Old Value New Value -
Initial Analysis by [email protected]
Jan. 04, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:N/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Changed Reference Type https://github.com/sparklemotion/nokogiri/commit/9c87439d9afa14a365ff13e73adc809cb2c3d97b No Types Assigned https://github.com/sparklemotion/nokogiri/commit/9c87439d9afa14a365ff13e73adc809cb2c3d97b Patch, Third Party Advisory Changed Reference Type https://github.com/sparklemotion/nokogiri/releases/tag/v1.11.0.rc4 No Types Assigned https://github.com/sparklemotion/nokogiri/releases/tag/v1.11.0.rc4 Release Notes, Third Party Advisory Changed Reference Type https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-vr8q-g5c7-m54m No Types Assigned https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-vr8q-g5c7-m54m Mitigation, Third Party Advisory Changed Reference Type https://hackerone.com/reports/747489 No Types Assigned https://hackerone.com/reports/747489 Permissions Required Changed Reference Type https://rubygems.org/gems/nokogiri No Types Assigned https://rubygems.org/gems/nokogiri Product, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:ruby:*:* versions up to (excluding) 1.11.0 *cpe:2.3:a:nokogiri:nokogiri:1.11.0:rc1:*:*:*:ruby:*:* *cpe:2.3:a:nokogiri:nokogiri:1.11.0:rc2:*:*:*:ruby:*:* *cpe:2.3:a:nokogiri:nokogiri:1.11.0:rc3:*:*:*:ruby:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-26247 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-2020-26247
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.22 }} 0.06%
score
0.60892
percentile