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).

CVSS v3.0 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:P/I:N/A:N

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://github.com/sybrenstuvel/python-rsa/issues/146	Issue Tracking Third Party Advisory
https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667	Exploit Issue Tracking Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW/	Mailing List Third Party Advisory
https://usn.ubuntu.com/4478-1/	Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:python-rsa_project:python-rsa:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:fedoraproject:fedora:31:::::::*
	cpe:2.3:o:fedoraproject:fedora:32:::::::*

Configuration 3 (hide)

cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*

Information

Published : 2020-06-01 12:15

Updated : 2023-02-28 19:09

NVD link : CVE-2020-13757

Mitre link : CVE-2020-13757

JSON object : View

CWE

CWE-327

Use of a Broken or Risky Cryptographic Algorithm

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Products Affected

fedoraproject

fedora

canonical

ubuntu_linux

python-rsa_project

python-rsa

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