CVE-2020-13757

Python-RSA before 4.1 ignores leading '\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 26%
Affected Products (NVD)
VendorProductVersion
python-rsa_projectpython-rsa
𝑥
< 4.1
canonicalubuntu_linux
14.04
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
python-rsa
bookworm
4.8-1
fixed
bullseye
no-dsa
buster
no-dsa
jessie
no-dsa
sid
4.9-2
fixed
stretch
no-dsa
trixie
4.9-2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
python-rsa
bionic
Fixed 3.4.2-1ubuntu0.1~esm1
released
eoan
ignored
focal
Fixed 4.0-3ubuntu0.1~esm1
released
groovy
ignored
hirsute
ignored
impish
ignored
jammy
not-affected
kinetic
not-affected
lunar
not-affected
mantic
not-affected
noble
not-affected
trusty
Fixed 3.1.2-1ubuntu0.1+esm1
released
xenial
Fixed 3.2.3-1.1ubuntu0.1~esm1
released
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
aws-cli-py36
suse enterprise server 12 SP3
1.19.9-6.3.15
fixed
libpython3_6m1_0
suse enterprise server 12 SP3
3.6.15-6.61.5
fixed
python36
suse enterprise server 12 SP3
3.6.15-6.61.6
fixed
python36-PyYAML
suse enterprise server 12 SP3
5.3.1-6.5.12
fixed
python36-appdirs
suse enterprise server 12 SP3
1.4.3-6.3.8
fixed
python36-asn1crypto
suse enterprise server 12 SP3
0.24.0-6.3.16
fixed
python36-base
suse enterprise server 12 SP3
3.6.15-6.61.5
fixed
python36-boto3
suse enterprise server 12 SP3
1.17.9-6.3.11
fixed
python36-botocore
suse enterprise server 12 SP3
1.20.9-6.3.11
fixed
python36-certifi
suse enterprise server 12 SP3
2018.1.18-6.3.15
fixed
python36-cffi
suse enterprise server 12 SP3
1.11.5-6.3.18
fixed
python36-chardet
suse enterprise server 12 SP3
3.0.4-6.3.15
fixed
python36-colorama
suse enterprise server 12 SP3
0.4.4-6.3.15
fixed
python36-cryptography
suse enterprise server 12 SP3
2.8-6.3.17
fixed
python36-curses
suse enterprise server 12 SP3
3.6.15-6.61.6
fixed
python36-dbm
suse enterprise server 12 SP3
3.6.15-6.61.6
fixed
python36-devel
suse enterprise server 12 SP3
3.6.15-6.61.5
fixed
python36-docutils
suse enterprise server 12 SP3
0.14-6.3.8
fixed
python36-idle
suse enterprise server 12 SP3
3.6.15-6.61.6
fixed
python36-idna
suse enterprise server 12 SP3
2.6-6.5.15
fixed
python36-jmespath
suse enterprise server 12 SP3
0.9.3-6.3.14
fixed
python36-packaging
suse enterprise server 12 SP3
17.1-6.6.8
fixed
python36-ply
suse enterprise server 12 SP3
3.10-6.3.8
fixed
python36-ply-doc
suse enterprise server 12 SP3
3.10-6.3.8
fixed
python36-py
suse enterprise server 12 SP3
1.8.1-6.3.15
fixed
python36-pyOpenSSL
suse enterprise server 12 SP3
17.1.0-6.3.16
fixed
python36-pyasn1
suse enterprise server 12 SP3
0.1.9-6.3.18
fixed
python36-pycparser
suse enterprise server 12 SP3
2.10-6.3.9
fixed
python36-pyparsing
suse enterprise server 12 SP3
2.4.7-6.3.9
fixed
python36-pyparsing-doc
suse enterprise server 12 SP3
2.4.7-6.3.9
fixed
python36-python-dateutil
suse enterprise server 12 SP3
2.7.3-6.3.13
fixed
python36-requests
suse enterprise server 12 SP3
2.24.0-6.3.15
fixed
python36-rsa
suse enterprise server 12 SP3
3.4.2-6.3.15
fixed
python36-s3transfer
suse enterprise server 12 SP3
0.3.3-6.3.11
fixed
python36-setuptools
suse enterprise server 12 SP3
44.1.1-9.11.1
fixed
python36-setuptools-test
suse enterprise server 12 SP3
44.1.1-6.7.4
fixed
python36-setuptools-wheel
suse enterprise server 12 SP3
44.1.1-6.7.3
fixed
python36-simplejson
suse enterprise server 12 SP3
3.8.2-6.3.16
fixed
python36-six
suse enterprise server 12 SP3
1.14.0-6.7.3
fixed
python36-six-doc
suse enterprise server 12 SP3
1.14.0-6.7.6
fixed
python36-testsuite
suse enterprise server 12 SP3
3.6.15-6.61.5
fixed
python36-tk
suse enterprise server 12 SP3
3.6.15-6.61.6
fixed
python36-tools
suse enterprise server 12 SP3
3.6.15-6.61.5
fixed
python36-urllib3
suse enterprise server 12 SP3
1.25.10-6.3.13
fixed
Common Weakness Enumeration
References
https://github.com/sybrenstuvel/python-rsa/issues/146
https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW/
https://usn.ubuntu.com/4478-1/
https://github.com/sybrenstuvel/python-rsa/issues/146
https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW/
https://usn.ubuntu.com/4478-1/