CVE-2020-13757
Published: 1 June 2020
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).
Priority
Status
| Package | Release | Status |
|---|---|---|
|
python-rsa Launchpad, Ubuntu, Debian |
bionic |
Released
(3.4.2-1ubuntu0.1~esm1)
Available with Ubuntu Pro |
| eoan |
Ignored
(end of life)
|
|
| focal |
Released
(4.0-3ubuntu0.1~esm1)
Available with Ubuntu Pro |
|
| groovy |
Ignored
(end of life)
|
|
| hirsute |
Ignored
(end of life)
|
|
| impish |
Ignored
(end of life)
|
|
| jammy |
Not vulnerable
(4.8-1)
|
|
| kinetic |
Not vulnerable
(4.8-1)
|
|
| lunar |
Not vulnerable
(4.8-1)
|
|
| mantic |
Not vulnerable
(4.8-1)
|
|
| noble |
Not vulnerable
(4.8-1)
|
|
| trusty |
Released
(3.1.2-1ubuntu0.1+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Released
(4.1)
|
|
| xenial |
Released
(3.2.3-1.1ubuntu0.1~esm1)
Available with Ubuntu Pro |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| 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 |