CVE-2021-3737 @ Helios
Status
new
Priority
0.62
Match score
4.0
Risk
DoS
Remote
CVSS
7.5 HIGH
Reason
cpe: python; pkgs: python-apt-common, python-is-python3; version: in-range: python-is-python3-3.9.2-1; debian:bullseye python2.7 open; risk:dos
Created
2026-10-15T10:20:41Z
Updated
2026-10-20T10:18:49Z
Package interrogation (copy)
Run on the host — click to copy a command. Debian/apt
| Package | Commands |
|---|---|
| python-is-python3-3.9.2-1 | |
| python-apt-common | |
| python | |
| libpython3.9-3.9.2-1+deb11u7 | |
| libpython3.9-minimal-3.9.2-1+deb11u7 | |
| libpython3.9-stdlib-3.9.2-1+deb11u7 | |
| libpython3-stdlib-3.9.2-3 | |
| python3-3.9.2-3 | |
| python3.9-3.9.2-1+deb11u7 | |
| python3.9-minimal-3.9.2-1+deb11u7 | |
| python3-apt-2.2.1.1 | |
| python3-certifi-2020.6.20-1 | |
| python3-chardet-4.0.0-1 | |
| python3-colorzero-1.1 | |
| python3-debconf-1.5.77 | |
| python3-distro-1.5.0-1 | |
| python3-gpiozero-1.6.2-1 | |
| python3-idna-2.10-1+deb11u1 | |
| python3-kms++-0~git20221104~171243+adc05b6-1 | |
| python3-libcamera-0~git20230720+bde9b04f-1 | |
| python3-minimal-3.9.2-3 | |
| python3-numpy-1:1.19.5-1 | |
| python3-picamera2-0.3.12-2 | |
| python3-pidng-4.0.9-1 | |
| python3-piexif-1.1.3-1 | |
| python3-pil-8.1.2+dfsg-0.3+deb11u3 | |
| python3-pkg-resources-52.0.0-4+deb11u2 | |
| python3-ply-3.11-4 | |
| python3-prctl-1.7-2+b4 | |
| python3-requests-2.25.1+dfsg-2 | |
| python3-rpi.gpio-0.7.0-0.2+b2 | |
| python3-simplejpeg-1.6.4-1 | |
| python3-six-1.16.0-2 |
Inventory lookup
Search package inventory across systems, then return here. Create a ticket on systems the matcher missed.
Suggestions: python-is-python3 · python-apt-common · python
| System | Matches | Ticket for CVE-2021-3737 | |
|---|---|---|---|
| Helios | libpython3-stdlib 3.9.2-3; libpython3.9 3.9.2-1+deb11u7; libpython3.9-minimal 3.9.2-1+deb11u7; libpython3.9-stdlib 3.9.2-1+deb11u7; python-apt-common 2.2.1.1; python-is-python3 3.9.2-1; python3 3.9.2-3; python3-apt 2.2.1.1 (+29 more) | new open | |
| Archive | libpython-stdlib 2.7.16-1; libpython2-stdlib 2.7.16-1; libpython2.7 2.7.16-2+deb10u4; libpython2.7-minimal 2.7.16-2+deb10u4; libpython2.7-stdlib 2.7.16-2+deb10u4; libpython3-stdlib 3.7.3-1; libpython3.5-minimal 3.5.3-1+deb9u5; libpython3.7-minimal 3.7.3-2+deb10u7 (+28 more) | none | |
| Bullseye | libpython3-stdlib 3.9.2-3; libpython3.9 3.9.2-1+deb11u7; libpython3.9-minimal 3.9.2-1+deb11u7; libpython3.9-stdlib 3.9.2-1+deb11u7; python-apt-common 2.2.1.1; python3 3.9.2-3; python3-apt 2.2.1.1; python3-certifi 2020.6.20-1 (+30 more) | none | |
| Janus | libpython2.7 2.7.16-2+deb10u4; libpython2.7-minimal 2.7.16-2+deb10u4; libpython2.7-stdlib 2.7.16-2+deb10u4; libpython3-stdlib 3.7.3-1; libpython3.7-minimal 3.7.3-2+deb10u7; libpython3.7-stdlib 3.7.3-2+deb10u7; python3 3.7.3-1; python3-minimal 3.7.3-1 (+2 more) | none | |
| Library | dh-python 2.20170125; libpython-stdlib 2.7.13-2; libpython2.7 2.7.13-2+deb9u6; libpython2.7-minimal 2.7.13-2+deb9u6; libpython2.7-stdlib 2.7.13-2+deb9u6; libpython3-stdlib 3.5.3-1; libpython3.5 3.5.3-1+deb9u5; libpython3.5-minimal 3.5.3-1+deb9u5 (+21 more) | none | |
| Matrix | libpython2.7-minimal 2.7.18-8+deb11u1; libpython2.7-stdlib 2.7.18-8+deb11u1; libpython3-stdlib 3.11.2-1+b1; libpython3.11 3.11.2-6+deb12u9; libpython3.11-minimal 3.11.2-6+deb12u9; libpython3.11-stdlib 3.11.2-6+deb12u9; python 2.7.16-1; python-apt-common 2.6.0 (+34 more) | none | |
| Saiph | libpython-stdlib 2.7.16-1; libpython2-stdlib 2.7.16-1; libpython2.7 2.7.16-2+deb10u4; libpython2.7-minimal 2.7.16-2+deb10u4; libpython2.7-stdlib 2.7.16-2+deb10u4; libpython3-stdlib 3.7.3-1; libpython3.5-minimal 3.5.3-1+deb9u1; libpython3.7 3.7.3-2+deb10u7 (+23 more) | none | |
| Silk | alt-python-internal 3.11.14-1; alt-python-internal-libs 3.11.14-1; alt-python-internal-pip-wheel 21.3.1-1; alt-python-internal-setuptools-wheel 65.6.3-1; alt-python311 3.11.9-1; alt-python311-libs 3.11.9-1; alt-python311-pip-wheel 21.3.1-1; alt-python311-setuptools-wheel 65.6.3-1 (+50 more) | none | |
| morris | alt-python-internal 3.11.13; alt-python-internal-libs 3.11.13; alt-python-internal-pip-wheel 21.3.1; alt-python-internal-setuptools-wheel 65.6.3; alt-python-virtualenv 20.13.0; alt-python27 2.7.18; alt-python27-alembic 0.8.3; alt-python27-argparse 1.2.1 (+341 more) | none | |
| mufasa | alt-python-internal 3.11.13; alt-python-internal-libs 3.11.13; alt-python-internal-pip-wheel 21.3.1; alt-python-internal-setuptools-wheel 65.6.3; alt-python-virtualenv 20.13.0; alt-python27 2.7.18; alt-python27-cllib 3.4.44; alt-python27-libs 2.7.18 (+195 more) | none |
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| CVE | CVSS | KEV | Systems | Status | Matched | Already related | |
|---|---|---|---|---|---|---|---|
| CVE-2022-37454 | 9.8 | Archive, morris, mufasa | new | python | — | ||
| CVE-2021-3518 | 8.8 | morris, mufasa | new | python | — | ||
| CVE-2021-3517 | 8.6 | morris, mufasa | new | python | — | ||
| CVE-2023-26604 | 7.8 | mufasa | new | python | — | ||
| CVE-2022-40304 | 7.8 | morris, mufasa | new | python | — | ||
| CVE-2022-0391 | 7.5 | Archive, Library, Matrix, Saiph, morris … | new | python | — | ||
| CVE-2023-24329 | 7.5 | Archive, Library, Saiph, morris, mufasa | new | python | — | ||
| CVE-2024-34459 | 7.5 | morris, mufasa | new | python | — | ||
| CVE-2022-23308 | 7.5 | morris, mufasa | new | python | — | ||
| CVE-2022-40303 | 7.5 | morris, mufasa | new | python | — | ||
| CVE-2022-48560 | 7.5 | Archive, Library, Matrix, Saiph, Silk … | new | python | — | ||
| CVE-2022-45061 | 7.5 | Archive, Bullseye, Helios, Library, Saiph … | new | python | — | ||
| CVE-2024-25062 | 7.5 | morris, mufasa | new | python | — | ||
| CVE-2018-20406 | 7.5 | morris, mufasa | new | python | — | ||
| CVE-2021-28861 | 7.4 | morris, mufasa | new | python | — |
Related CVE (same fix)
Point this ticket’s CVE at a higher-priority / same-fix primary so you only triage one.
Host OS / kernel
OS
Debian GNU/Linux 11 (bullseye)
(11)
· debian
Arch
aarch64
kernel_release
uname -r → 6.1.21-v8+kernel_version
uname -v → #1642 SMP PREEMPT Mon Apr 3 17:24:16 BST 2023For Linux kernel CVEs, kernel_version (Debian packaging / build string) often decides fixed vs not; kernel_release is used for upstream NVD range compares.
Description
A flaw was found in python. An improperly handled HTTP response in the HTTP client code of python may allow a remote attacker, who controls the HTTP server, to make the client script enter an infinite loop, consuming CPU time. The highest threat from this vulnerability is to system availability.
Update status
Add note only
References
- https://bugs.python.org/issue44022
- https://bugzilla.redhat.com/show_bug.cgi?id=1995162
- https://github.com/python/cpython/pull/25916
- https://github.com/python/cpython/pull/26503
- https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html
- https://lists.debian.org/debian-lts-announce/2023/06/msg00039.html
- https://python-security.readthedocs.io/vuln/urllib-100-continue-loop.html
- https://security.netapp.com/advisory/ntap-20220407-0009/
- https://ubuntu.com/security/CVE-2021-3737
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://bugs.python.org/issue44022
- https://bugzilla.redhat.com/show_bug.cgi?id=1995162
- https://github.com/python/cpython/pull/25916
- https://github.com/python/cpython/pull/26503
- https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html
NVD: CVE-2021-3737