CVE-2021-29921

In Python before 3,9,5, the ipaddress library mishandles leading zero characters in the octets of an IP address string. This (in some situations) allows attackers to bypass access control that is based on IP addresses.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
mitreCNA
---
---
CVEADP
---
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Base Score
CVSS 3.x
EPSS Score
Percentile: 82%
VendorProductVersion
pythonpython
3.8.0 ≤
𝑥
< 3.8.12
pythonpython
3.9.0 ≤
𝑥
< 3.9.5
oraclecommunications_cloud_native_core_automated_test_suite
1.8.0
oraclecommunications_cloud_native_core_binding_support_function
1.11.0
oraclecommunications_cloud_native_core_network_slice_selection_function
1.8.0
oraclegraalvm
20.3.2
oraclegraalvm
21.1.0
oraclezfs_storage_appliance_kit
8.8
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
pypy3
bullseye
7.3.5+dfsg-2+deb11u2
not-affected
bullseye (security)
7.3.5+dfsg-2+deb11u2
fixed
buster
no-dsa
bookworm
7.3.11+dfsg-2+deb12u2
fixed
sid
7.3.17+dfsg-2
fixed
trixie
7.3.17+dfsg-2
fixed
python2.7
bullseye
2.7.18-8+deb11u1
fixed
buster
no-dsa
python3.9
bullseye
vulnerable
buster
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
python2.7
noble
dne
mantic
dne
lunar
dne
kinetic
not-affected
jammy
not-affected
impish
not-affected
hirsute
not-affected
groovy
not-affected
focal
not-affected
bionic
not-affected
xenial
not-affected
trusty
not-affected
python3.10
noble
dne
mantic
dne
lunar
dne
kinetic
not-affected
jammy
not-affected
impish
not-affected
hirsute
Fixed 3.10.0~b1-3~21.04
released
groovy
dne
focal
dne
bionic
dne
xenial
dne
trusty
dne
python3.4
noble
dne
mantic
dne
lunar
dne
kinetic
dne
jammy
dne
impish
dne
hirsute
dne
groovy
dne
focal
dne
bionic
dne
xenial
dne
trusty
not-affected
python3.5
noble
dne
mantic
dne
lunar
dne
kinetic
dne
jammy
dne
impish
dne
hirsute
dne
groovy
dne
focal
dne
bionic
dne
xenial
not-affected
trusty
not-affected
python3.6
noble
dne
mantic
dne
lunar
dne
kinetic
dne
jammy
dne
impish
dne
hirsute
dne
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
python3.7
noble
dne
mantic
dne
lunar
dne
kinetic
dne
jammy
dne
impish
dne
hirsute
dne
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
python3.8
noble
dne
mantic
dne
lunar
dne
kinetic
dne
jammy
dne
impish
dne
hirsute
dne
groovy
Fixed 3.8.6-1ubuntu0.3
released
focal
Fixed 3.8.10-0ubuntu1~20.04.1
released
bionic
Fixed 3.8.0-3ubuntu1~18.04.2+esm2
released
xenial
dne
trusty
dne
python3.9
noble
dne
mantic
dne
lunar
dne
kinetic
dne
jammy
dne
impish
Fixed 3.9.5-2ubuntu1
released
hirsute
Fixed 3.9.5-3~21.04
released
groovy
Fixed 3.9.5-3~20.10.1
released
focal
Fixed 3.9.5-3~20.04.1
released
bionic
dne
xenial
dne
trusty
dne
References