CVE-2021-3426

Description

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.

Scores

Faiblesses (CWE)

• CWE-200
• CWE-22

Références européennes

• ENISA EUVD · EUVD-2021-26753
• GCVE · GCVE-0-2021-3426

Avis du CERT-FR

• CERTFR-2026-AVI-0395 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
• CERTFR-2025-AVI-0969 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
• CERTFR-2023-AVI-1015 — Multiples vulnérabilités dans les produits Siemens · cert.ssi.gouv.fr
• CERTFR-2023-AVI-0976 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr

Configurations affectées (CPE NVD)

• cpe:2.3:a:python:python:*:*:*:*:*:*:*:* < 2.7.18
• cpe:2.3:a:python:python:*:*:*:*:*:*:*:* ≥ 3.6.0 < 3.6.13
• cpe:2.3:a:python:python:*:*:*:*:*:*:*:* ≥ 3.7.0 < 3.7.10
• cpe:2.3:a:python:python:*:*:*:*:*:*:*:* ≥ 3.8.0 < 3.8.8
• cpe:2.3:a:python:python:*:*:*:*:*:*:*:* ≥ 3.9.0 < 3.9.3
• cpe:2.3:a:python:python:3.10.0:alpha1:*:*:*:*:*:*
• cpe:2.3:a:python:python:3.10.0:alpha2:*:*:*:*:*:*
• cpe:2.3:a:python:python:3.10.0:alpha3:*:*:*:*:*:*
• cpe:2.3:a:python:python:3.10.0:alpha4:*:*:*:*:*:*
• cpe:2.3:a:python:python:3.10.0:alpha5:*:*:*:*:*:*
• cpe:2.3:a:python:python:3.10.0:alpha6:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
• cpe:2.3:a:redhat:software_collections:-:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
• cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
• cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
• cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:1.10.0:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*

Produits affectés

Références

• https://lists.debian.org/debian-lts-announce/2021/04/msg00005.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/25HVHLBGO2KNPXJ3G426QEYSSCECJDU5/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VPX7Y5GQDNB4FJTREWONGC4ZSVH7TGHF/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DQYPUKLLBOZMKFPO7RD7CENTXHUUEUV7/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N6VXJZSZ6N64AILJX4CTMACYGQGHHD5C/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QNGAFMPIYIVJ47FCF2NK2PIX22HUG35B/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BF2K7HEWADHN6P52R3QLIOX27U3DJ4HI/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LM5V4VPLBHBEASSAROYPSHXGXGGPHNOE/
• https://security.gentoo.org/glsa/202104-04
• https://bugzilla.redhat.com/show_bug.cgi?id=1935913
• https://www.oracle.com/security-alerts/cpuoct2021.html
• https://security.netapp.com/advisory/ntap-20210629-0003/
• https://www.oracle.com/security-alerts/cpujan2022.html
• https://lists.debian.org/debian-lts-announce/2023/06/msg00039.html
• https://lists.debian.org/debian-lts-announce/2024/12/msg00000.html
• https://cert-portal.siemens.com/productcert/html/ssa-398330.html

Sources