CVE-2020-8492

EUVD-2020-29358
Python 2.7 through 2.7.17, 3.5 through 3.5.9, 3.6 through 3.6.10, 3.7 through 3.7.6, and 3.8 through 3.8.1 allows an HTTP server to conduct Regular Expression Denial of Service (ReDoS) attacks against a client because of urllib.request.AbstractBasicAuthHandler catastrophic backtracking.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.5 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 87%
Affected Products (NVD)
VendorProductVersion
pythonpython
2.7.0 ≤
𝑥
≤ 2.7.17
pythonpython
3.5.0 ≤
𝑥
≤ 3.5.9
pythonpython
3.6.0 ≤
𝑥
≤ 3.6.10
pythonpython
3.7.0 ≤
𝑥
≤ 3.7.6
pythonpython
3.8.0 ≤
𝑥
≤ 3.8.1
opensuseleap
15.1
canonicalubuntu_linux
12.04
canonicalubuntu_linux
14.04
canonicalubuntu_linux
16.04
canonicalubuntu_linux
18.04
canonicalubuntu_linux
19.10
canonicalubuntu_linux
20.04
debiandebian_linux
9.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
python2.7
bullseye
2.7.18-8+deb11u1
fixed
jessie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
python2.7
bionic
Fixed 2.7.17-1~18.04ubuntu1
released
eoan
ignored
focal
Fixed 2.7.18-1~20.04.1
released
groovy
ignored
hirsute
ignored
impish
ignored
jammy
not-affected
kinetic
not-affected
lunar
dne
mantic
dne
noble
dne
trusty
Fixed 2.7.6-8ubuntu0.6+esm5
released
xenial
Fixed 2.7.12-1ubuntu0~16.04.11
released
python3.4
bionic
dne
eoan
dne
focal
dne
groovy
dne
hirsute
dne
impish
dne
jammy
dne
kinetic
dne
lunar
dne
mantic
dne
noble
dne
trusty
Fixed 3.4.3-1ubuntu1~14.04.7+esm6
released
xenial
dne
python3.5
bionic
dne
eoan
dne
focal
dne
groovy
dne
hirsute
dne
impish
dne
jammy
dne
kinetic
dne
lunar
dne
mantic
dne
noble
dne
trusty
Fixed 3.5.2-2ubuntu0~16.04.4~14.04.1+esm1
released
xenial
Fixed 3.5.2-2ubuntu0~16.04.10
released
python3.6
bionic
Fixed 3.6.9-1~18.04ubuntu1
released
eoan
dne
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
Fixed 3.7.5-2ubuntu1~18.04.2
released
eoan
Fixed 3.7.5-2~19.10ubuntu1
released
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
released
eoan
ignored
focal
Fixed 3.8.2-1ubuntu1.1
released
groovy
Fixed 3.8.2-1ubuntu1.1
released
hirsute
dne
impish
dne
jammy
dne
kinetic
dne
lunar
dne
mantic
dne
noble
dne
trusty
dne
xenial
dne
References