7.8
HIGH
CVE-2021-42771
Apache Babel Unserialized Code Execution Vulnerability
Description

Babel.Locale in Babel before 2.9.1 allows attackers to load arbitrary locale .dat files (containing serialized Python objects) via directory traversal, leading to code execution.

INFO

Published Date :

Oct. 20, 2021, 9:15 p.m.

Last Modified :

Dec. 14, 2021, 9:22 p.m.

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

1.8
Public PoC/Exploit Available at Github

CVE-2021-42771 has a 1 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-2021-42771 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.

ID Vendor Product Action
1 Debian debian_linux
1 Pocoo babel
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-2021-42771.

URL Resource
https://github.com/python-babel/babel/pull/782 Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00018.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts/2021/10/msg00040.html Mailing List Third Party Advisory
https://www.debian.org/security/2021/dsa-5018 Third Party Advisory
https://www.tenable.com/security/research/tra-2021-14 Exploit 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).

None

CMake Shell Perl C++ C Batchfile CSS Makefile M4 Python

Updated: 8 months, 3 weeks ago
34 stars 0 fork 0 watcher
Born at : Feb. 1, 2024, 11:43 a.m. This repo has been linked 71 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-42771 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-42771 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]

    Dec. 14, 2021

    Action Type Old Value New Value
    Changed Reference Type https://www.debian.org/security/2021/dsa-5018 No Types Assigned https://www.debian.org/security/2021/dsa-5018 Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Dec. 10, 2021

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2021/dsa-5018 [No Types Assigned]
  • Initial Analysis by [email protected]

    Oct. 26, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://github.com/python-babel/babel/pull/782 No Types Assigned https://github.com/python-babel/babel/pull/782 Patch, Third Party Advisory
    Changed Reference Type https://lists.debian.org/debian-lts/2021/10/msg00040.html No Types Assigned https://lists.debian.org/debian-lts/2021/10/msg00040.html Mailing List, Third Party Advisory
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/10/msg00018.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/10/msg00018.html Mailing List, Third Party Advisory
    Changed Reference Type https://www.tenable.com/security/research/tra-2021-14 No Types Assigned https://www.tenable.com/security/research/tra-2021-14 Exploit, Third Party Advisory
    Added CWE NIST CWE-22
    Added CPE Configuration OR *cpe:2.3:a:pocoo:babel:*:*:*:*:*:*:*:* versions up to (excluding) 2.9.1
  • CVE Modified by [email protected]

    Oct. 21, 2021

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2021/10/msg00018.html [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-42771 is associated with the following CWEs:

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

0.47658

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
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