CVE-2020-13757

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Summary

CVECVE-2020-13757
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-06-01 19:15:00 UTC
Updated2023-11-07 03:16:00 UTC
DescriptionPython-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).

Risk And Classification

Problem Types: CWE-327

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Canonical Ubuntu Linux 14.04 All All All
Operating System Fedoraproject Fedora 31 All All All
Operating System Fedoraproject Fedora 32 All All All
Application Python-rsa Project Python-rsa All All All All
Application Python-rsa Project Python-rsa 4.0 All All All
Application Python-rsa Project Python-rsa 4.0 All All All

References

ReferenceSourceLinkTags
[SECURITY] Fedora 32 Update: python-rsa-3.4.2-15.fc32 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
[SECURITY] Fedora 31 Update: python-rsa-3.4.2-15.fc31 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 32 Update: python-rsa-3.4.2-15.fc32 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 31 Update: python-rsa-3.4.2-15.fc31 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
USN-4478-1: Python-RSA vulnerability | Ubuntu security notices | Ubuntu UBUNTU usn.ubuntu.com
python-rsa does not detect ciphertext modification (prepended "0" bytes) in PKCS1_v1_5 · Issue #146 · sybrenstuvel/python-rsa · GitHub CONFIRM github.com
python-rsa does not detect ciphertext modification (prepended "0" bytes) in PKCS1_v1_5 · Issue #146 · sybrenstuvel/python-rsa · GitHub MISC github.com Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 750659 SUSE Enterprise Linux Security Update for python-rsa (SUSE-SU-2021:2008-1)
  • 750702 OpenSUSE Security Update for python-rsa (openSUSE-SU-2021:0901-1)
  • 750780 OpenSUSE Security Update for python-rsa (openSUSE-SU-2021:2008-1)
  • 982888 Python (pip) Security Update for rsa (GHSA-537h-rv9q-vvph)
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