CVE-2021-36770
Apache Encode Privilege Escalation vulnerability
Description
Encode.pm, as distributed in Perl through 5.34.0, allows local users to gain privileges via a Trojan horse Encode::ConfigLocal library (in the current working directory) that preempts dynamic module loading. Exploitation requires an unusual configuration, and certain 2021 versions of Encode.pm (3.05 through 3.11). This issue occurs because the || operator evaluates @INC in a scalar context, and thus @INC has only an integer value.
INFO
Published Date :
Aug. 11, 2021, 11:15 p.m.
Last Modified :
Nov. 7, 2023, 3:36 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2021-36770 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2021-36770
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-2021-36770.
| URL | Resource |
|---|---|
| https://github.com/Perl/perl5/commit/c1a937fef07c061600a0078f4cb53fe9c2136bb9 | Patch Third Party Advisory |
| https://github.com/dankogai/p5-encode/commit/527e482dc70b035d0df4f8c77a00d81f8d775c74 | Patch Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5NDGQSGMEZ75FJGBKNYC75OTO7TF7XHB/ | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6KOZYD7BH2DNIAEZ2ZL4PJ4QUVQI6Y33/ | |
| https://metacpan.org/dist/Encode/changes | Third Party Advisory |
| https://news.cpanel.com/unscheduled-tsr-10-august-2021/ | Third Party Advisory |
| https://security-tracker.debian.org/tracker/CVE-2021-36770 | Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20210909-0003/ | 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).
ANALYSIS OF THE PROPOSAL PREPARATION PROCESS OF ANNUAL BUDGET LAW IN A PUBLIC INSTITUTION FEDERAL HIGHER EDUCATION
Shell Perl Raku Makefile C++
Optimal Control of Evolution Differential Inclusions with Polynomial Linear Differential Operators
R Pascal Perl HTML
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-36770 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-36770 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 MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6KOZYD7BH2DNIAEZ2ZL4PJ4QUVQI6Y33/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5NDGQSGMEZ75FJGBKNYC75OTO7TF7XHB/ [No types assigned] Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/6KOZYD7BH2DNIAEZ2ZL4PJ4QUVQI6Y33/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/5NDGQSGMEZ75FJGBKNYC75OTO7TF7XHB/ -
CWE Remap by [email protected]
May. 03, 2022
Action Type Old Value New Value Changed CWE CWE-426 CWE-427 -
Modified Analysis by [email protected]
Sep. 21, 2021
Action Type Old Value New Value Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/5NDGQSGMEZ75FJGBKNYC75OTO7TF7XHB/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/5NDGQSGMEZ75FJGBKNYC75OTO7TF7XHB/ Mailing List, Third Party Advisory Changed Reference Type https://security.netapp.com/advisory/ntap-20210909-0003/ No Types Assigned https://security.netapp.com/advisory/ntap-20210909-0003/ Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Sep. 09, 2021
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20210909-0003/ [No Types Assigned] -
CVE Modified by [email protected]
Aug. 25, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/5NDGQSGMEZ75FJGBKNYC75OTO7TF7XHB/ [No Types Assigned] -
Initial Analysis by [email protected]
Aug. 20, 2021
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Changed Reference Type https://github.com/dankogai/p5-encode/commit/527e482dc70b035d0df4f8c77a00d81f8d775c74 No Types Assigned https://github.com/dankogai/p5-encode/commit/527e482dc70b035d0df4f8c77a00d81f8d775c74 Patch, Third Party Advisory Changed Reference Type https://github.com/Perl/perl5/commit/c1a937fef07c061600a0078f4cb53fe9c2136bb9 No Types Assigned https://github.com/Perl/perl5/commit/c1a937fef07c061600a0078f4cb53fe9c2136bb9 Patch, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/6KOZYD7BH2DNIAEZ2ZL4PJ4QUVQI6Y33/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/6KOZYD7BH2DNIAEZ2ZL4PJ4QUVQI6Y33/ Mailing List, Third Party Advisory Changed Reference Type https://metacpan.org/dist/Encode/changes No Types Assigned https://metacpan.org/dist/Encode/changes Third Party Advisory Changed Reference Type https://news.cpanel.com/unscheduled-tsr-10-august-2021/ No Types Assigned https://news.cpanel.com/unscheduled-tsr-10-august-2021/ Third Party Advisory Changed Reference Type https://security-tracker.debian.org/tracker/CVE-2021-36770 No Types Assigned https://security-tracker.debian.org/tracker/CVE-2021-36770 Third Party Advisory Added CWE NIST CWE-426 Added CPE Configuration AND OR *cpe:2.3:a:p5-encode_project:p5-encode:*:*:*:*:*:*:*:* versions from (including) 3.05 up to (excluding) 3.12 OR cpe:2.3:a:perl:perl:*:*:*:*:*:*:*:* versions up to (including) 5.34.0 Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Aug. 13, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/6KOZYD7BH2DNIAEZ2ZL4PJ4QUVQI6Y33/ [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-36770 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-2021-36770
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.09 }} -0.00%
score
0.37755
percentile