CVE-2020-25659
Published: 28 October 2020
python-cryptography 3.2 is vulnerable to Bleichenbacher timing attacks in the RSA decryption API, via timed processing of valid PKCS#1 v1.5 ciphertext.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
python-cryptography Launchpad, Ubuntu, Debian |
bionic |
Released
(2.1.4-1ubuntu1.4)
|
| focal |
Released
(2.8-3ubuntu0.1)
|
|
| groovy |
Released
(3.0-1ubuntu0.1)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(3.2.1-1)
|
|
| xenial |
Released
(1.2.3-1ubuntu0.3)
|
|
|
Patches: upstream: https://github.com/pyca/cryptography/commit/58494b41d6ecb0f56b7c5f05d5f5e3ca0320d494 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.9 |
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |