GHSA-537h-rv9q-vvph
Python-RSA decryption of ciphertext leads to DoS
At a glance
- Published
- Updated
- CVE
- CVE-2020-13757
- Aliases
- PYSEC-2020-99
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Description
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).
Affected packages
| Package | Versions |
|---|---|
| PyPI · rsa | introduced 0, fixed 4.1 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2020-13757 ADVISORY
- https://github.com/sybrenstuvel/python-rsa/issues/146 WEB
- https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667 WEB
- https://github.com/pypa/advisory-database/tree/main/vulns/rsa/PYSEC-2020-99.yaml WEB
- https://github.com/sybrenstuvel/python-rsa PACKAGE
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ WEB
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW WEB
- https://usn.ubuntu.com/4478-1 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |