Python-RSA decryption of ciphertext leads to DoS
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).
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2020-13757US | high7.5OT elevated | — | ||
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… | ||||
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references
External citations — patches, advisories, analysis.
- https://github.com/pypa/advisory-database/tree/main/vulns/rsa/PYSEC-2020-99.yamlWEB
- https://github.com/sybrenstuvel/python-rsaPACKAGE
- https://github.com/sybrenstuvel/python-rsa/issues/146WEB
- https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667WEB
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQWEB
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MWWEB
- https://nvd.nist.gov/vuln/detail/CVE-2020-13757ADVISORY
- https://usn.ubuntu.com/4478-1WEB
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