CVE-2020-13757
Publication date 1 June 2020
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
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).
Status
Package | Ubuntu Release | Status |
---|---|---|
python-rsa | 24.10 oracular |
Not affected
|
24.04 LTS noble |
Not affected
|
|
22.04 LTS jammy |
Not affected
|
|
20.04 LTS focal |
Fixed 4.0-3ubuntu0.1~esm1
|
|
18.04 LTS bionic |
Fixed 3.4.2-1ubuntu0.1~esm1
|
|
16.04 LTS xenial |
Fixed 3.2.3-1.1ubuntu0.1~esm1
|
|
14.04 LTS trusty |
Fixed 3.1.2-1ubuntu0.1+esm1
|
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Get Ubuntu ProSeverity score breakdown
Parameter | Value |
---|---|
Base score | 7.5 · High |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | None |
Availability impact | None |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
References
Related Ubuntu Security Notices (USN)
- USN-4478-1
- Python-RSA vulnerability
- 31 August 2020
- USN-4478-2
- Python-RSA vulnerability
- 21 February 2022