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Vulnerability Details : CVE-2021-3426

There's a flaw in Python 3's pydoc. A local or adjacent attacker who discovers or is able to convince another local or adjacent user to start a pydoc server could access the server and use it to disclose sensitive information belonging to the other user that they would not normally be able to access. The highest risk of this flaw is to data confidentiality. This flaw affects Python versions before 3.8.9, Python versions before 3.9.3 and Python versions before 3.10.0a7.
Publish Date : 2021-05-20 Last Update Date : 2021-10-20
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication ???
Gained Access None
Vulnerability Type(s) Obtain Information
CWE ID 200

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2021:4160: python39:3.9 and python39-devel:3.9 security update (Moderate) oval:com.redhat.rhsa:def:20214160 unix
RHSA-2021:4162: python38:3.8 and python38-devel:3.8 security update (Moderate) oval:com.redhat.rhsa:def:20214162 unix
RHSA-2021:4399: python3 security update (Moderate) oval:com.redhat.rhsa:def:20214399 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2021-3426

# Product Type Vendor Product Version Update Edition Language
1 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
2 OS Fedoraproject Fedora 32 * * * Version Details Vulnerabilities
3 OS Fedoraproject Fedora 33 * * * Version Details Vulnerabilities
4 OS Fedoraproject Fedora 34 * * * Version Details Vulnerabilities
5 Application Python Python * * * * Version Details Vulnerabilities
6 Application Python Python 3.10.0 Alpha5 * * Version Details Vulnerabilities
7 Application Python Python 3.10.0 Alpha6 * * Version Details Vulnerabilities
8 Application Python Python 3.10.0 Alpha1 * * Version Details Vulnerabilities
9 Application Python Python 3.10.0 Alpha2 * * Version Details Vulnerabilities
10 Application Python Python 3.10.0 Alpha3 * * Version Details Vulnerabilities
11 Application Python Python 3.10.0 Alpha4 * * Version Details Vulnerabilities
12 OS Redhat Enterprise Linux 8.0 * * * Version Details Vulnerabilities
13 Application Redhat Software Collections - * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Debian Debian Linux 1
Fedoraproject Fedora 3
Python Python 7
Redhat Enterprise Linux 1
Redhat Software Collections 1

- References For CVE-2021-3426 CONFIRM
FEDORA FEDORA-2021-a26257ccf5
MLIST [debian-lts-announce] 20210405 [SECURITY] [DLA 2619-1] python3.5 security update
GENTOO GLSA-202104-04
FEDORA FEDORA-2021-2ab6f060d9
FEDORA FEDORA-2021-067c9deff1
FEDORA FEDORA-2021-a311bf10d4
FEDORA FEDORA-2021-0a8f3ffbc0
FEDORA FEDORA-2021-1769a23935
FEDORA FEDORA-2021-b6b6093b3a

- Metasploit Modules Related To CVE-2021-3426

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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