CVE-2020-13757

Public Exploit

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).

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.08%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory ubuntu.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/sybrenstuvel/python-rsa/issues/146 issue tracking third party advisory
https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667 issue tracking exploit third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW/ vendor advisory
https://usn.ubuntu.com/4478-1/ third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-13757?
CVE-2020-13757 has been scored as a high severity vulnerability.
How to fix CVE-2020-13757?
To fix CVE-2020-13757, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-13757 being actively exploited in the wild?
It is possible that CVE-2020-13757 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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