CVE-2021-29921

EUVD-2021-16395
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
NISTPrimary
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
Base Score
CVSS 3.x
EPSS Score
Percentile: 83%
Affected Products (NVD)
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
bookworm
7.3.11+dfsg-2+deb12u2
fixed
bullseye
7.3.5+dfsg-2+deb11u2
not-affected
bullseye (security)
7.3.5+dfsg-2+deb11u2
fixed
buster
no-dsa
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
bionic
not-affected
focal
not-affected
groovy
not-affected
hirsute
not-affected
impish
not-affected
jammy
not-affected
kinetic
not-affected
lunar
dne
mantic
dne
noble
dne
trusty
not-affected
xenial
not-affected
python3.10
bionic
dne
focal
dne
groovy
dne
hirsute
Fixed 3.10.0~b1-3~21.04
released
impish
not-affected
jammy
not-affected
kinetic
not-affected
lunar
dne
mantic
dne
noble
dne
trusty
dne
xenial
dne
python3.4
bionic
dne
focal
dne
groovy
dne
hirsute
dne
impish
dne
jammy
dne
kinetic
dne
lunar
dne
mantic
dne
noble
dne
trusty
not-affected
xenial
dne
python3.5
bionic
dne
focal
dne
groovy
dne
hirsute
dne
impish
dne
jammy
dne
kinetic
dne
lunar
dne
mantic
dne
noble
dne
trusty
not-affected
xenial
not-affected
python3.6
bionic
not-affected
focal
dne
groovy
dne
hirsute
dne
impish
dne
jammy
dne
kinetic
dne
lunar
dne
mantic
dne
noble
dne
trusty
dne
xenial
dne
python3.7
bionic
not-affected
focal
dne
groovy
dne
hirsute
dne
impish
dne
jammy
dne
kinetic
dne
lunar
dne
mantic
dne
noble
dne
trusty
dne
xenial
dne
python3.8
bionic
Fixed 3.8.0-3ubuntu1~18.04.2+esm2
released
focal
Fixed 3.8.10-0ubuntu1~20.04.1
released
groovy
Fixed 3.8.6-1ubuntu0.3
released
hirsute
dne
impish
dne
jammy
dne
kinetic
dne
lunar
dne
mantic
dne
noble
dne
trusty
dne
xenial
dne
python3.9
bionic
dne
focal
Fixed 3.9.5-3~20.04.1
released
groovy
Fixed 3.9.5-3~20.10.1
released
hirsute
Fixed 3.9.5-3~21.04
released
impish
Fixed 3.9.5-2ubuntu1
released
jammy
dne
kinetic
dne
lunar
dne
mantic
dne
noble
dne
trusty
dne
xenial
dne
References