CVE-2021-3426
CVE-2021-3426
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 5.7 · Medium · EPSS 1.9% · Fix available
- Published
- Updated
Affected products and versions
python
- Versions
- python 3.8.9, python 3.9.3, python 3.10.0a7: Affected
No fix published
pypy3 Debian:12
- Affected ranges
- ECOSYSTEM: < 7.3.3+dfsg-4
Update to 7.3.3+dfsg-4
pypy3 Debian:13
- Affected ranges
- ECOSYSTEM: < 7.3.3+dfsg-4
Update to 7.3.3+dfsg-4
pypy3 Debian:14
- Affected ranges
- ECOSYSTEM: < 7.3.3+dfsg-4
Update to 7.3.3+dfsg-4
python3.4 Ubuntu:Pro:14.04:LTS
- Versions
- 3.4~b1-0ubuntu3
- 3.4~b1-4ubuntu4
- 3.4~b1-4ubuntu6
- 3.4~b1-5ubuntu2
- 3.4~b2-1
- 3.4~b3-1ubuntu1
- 3.4~rc1-1build1
- 3.4~rc2-1
- 3.4~rc3-0ubuntu1
- 3.4.0-1
- 3.4.0-2ubuntu1
- 3.4.0-2ubuntu1.1
- 3.4.3-1ubuntu1~14.04.1
- 3.4.3-1ubuntu1~14.04.3
- 3.4.3-1ubuntu1~14.04.4
- 3.4.3-1ubuntu1~14.04.5
- 3.4.3-1ubuntu1~14.04.6
- 3.4.3-1ubuntu1~14.04.7
- 3.4.3-1ubuntu1~14.04.7+esm2
- 3.4.3-1ubuntu1~14.04.7+esm4
- 3.4.3-1ubuntu1~14.04.7+esm6
- 3.4.3-1ubuntu1~14.04.7+esm7
- 3.4.3-1ubuntu1~14.04.7+esm8
- 3.4.3-1ubuntu1~14.04.7+esm10
- 3.4.3-1ubuntu1~14.04.7+esm11
- Affected ranges
- ECOSYSTEM: < 3.4.3-1ubuntu1~14.04.7+esm12
Update to 3.4.3-1ubuntu1~14.04.7+esm12
python3.5 Ubuntu:Pro:14.04:LTS
- Versions
- 3.5.2-2ubuntu0~16.04.4~14.04.1
- Affected ranges
- ECOSYSTEM: < 3.5.2-2ubuntu0~16.04.4~14.04.1+esm1
Update to 3.5.2-2ubuntu0~16.04.4~14.04.1+esm1
python3.5 Ubuntu:Pro:16.04:LTS
- Versions
- 3.5.0-3
- 3.5.0-3ubuntu1
- 3.5.1~rc1-2ubuntu1
- 3.5.1-1
- 3.5.1-2
- 3.5.1-3
- 3.5.1-5
- 3.5.1-6ubuntu1
- 3.5.1-6ubuntu2
- 3.5.1-9ubuntu1
- 3.5.1-10
- 3.5.2-2~16.01
- 3.5.2-2~16.04
- 3.5.2-2ubuntu0~16.04.1
- 3.5.2-2ubuntu0~16.04.2
- 3.5.2-2ubuntu0~16.04.3
- 3.5.2-2ubuntu0~16.04.4
- 3.5.2-2ubuntu0~16.04.5
- 3.5.2-2ubuntu0~16.04.8
- 3.5.2-2ubuntu0~16.04.9
- 3.5.2-2ubuntu0~16.04.10
- 3.5.2-2ubuntu0~16.04.11
- 3.5.2-2ubuntu0~16.04.12
- 3.5.2-2ubuntu0~16.04.13
- 3.5.2-2ubuntu0~16.04.13+esm1
- Affected ranges
- ECOSYSTEM: < 3.5.2-2ubuntu0~16.04.13+esm2
Update to 3.5.2-2ubuntu0~16.04.13+esm2
python3.6 Ubuntu:18.04:LTS
- Versions
- 3.6.3-1ubuntu1
- 3.6.4~rc1-1
- 3.6.4~rc1-2
- 3.6.4-1
- 3.6.4-2
- 3.6.4-3build1
- 3.6.4-4
- 3.6.5~rc1-1
- 3.6.5-3
- 3.6.6-1~18.04
- 3.6.7-1~18.04
- 3.6.8-1~18.04.1
- 3.6.8-1~18.04.2
- 3.6.8-1~18.04.3
- 3.6.9-1~18.04
- 3.6.9-1~18.04ubuntu1
- 3.6.9-1~18.04ubuntu1.1
- 3.6.9-1~18.04ubuntu1.3
- 3.6.9-1~18.04ubuntu1.4
- 3.6.9-1~18.04ubuntu1.6
- Affected ranges
- ECOSYSTEM: < 3.6.9-1~18.04ubuntu1.7
Update to 3.6.9-1~18.04ubuntu1.7
python3.7 Ubuntu:Pro:18.04:LTS
- Versions
- 3.7.0~a2-1
- 3.7.0~a3-1
- 3.7.0~a3-2
- 3.7.0~a3-3
- 3.7.0~a4-1
- 3.7.0~b1-1
- 3.7.0~b1-1build1
- 3.7.0~b2-1
- 3.7.0~b3-1
- 3.7.0-1~18.04
- 3.7.1-1~18.04
- 3.7.3-2~18.04.1
- 3.7.5-2~18.04
- 3.7.5-2~18.04.4
- 3.7.5-2ubuntu1~18.04.2
- Affected ranges
- ECOSYSTEM: < 3.7.5-2ubuntu1~18.04.2+esm1
Update to 3.7.5-2ubuntu1~18.04.2+esm1
python3.8 Ubuntu:Pro:18.04:LTS
- Versions
- 3.8.0-3~18.04
- 3.8.0-3~18.04.1
- 3.8.0-3ubuntu1~18.04.2
- 3.8.0-3ubuntu1~18.04.2+esm1
- Affected ranges
- ECOSYSTEM: < 3.8.0-3ubuntu1~18.04.2+esm2
Update to 3.8.0-3ubuntu1~18.04.2+esm2
python3.9 Ubuntu:20.04:LTS
- Versions
- 3.9.0~rc1-1~20.04
- 3.9.0-5~20.04
- Affected ranges
- ECOSYSTEM: < 3.9.5-3~20.04.1
Update to 3.9.5-3~20.04.1
Original sources
- 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
- https://nvd.nist.gov/vuln/detail/CVE-2021-3426