CVE-2016-9243
Published: 9 November 2016
HKDF in cryptography before 1.5.2 returns an empty byte-string if used with a length less than algorithm.digest_size.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
python-cryptography Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(1.5.3-1)
|
|
| xenial |
Released
(1.2.3-1ubuntu0.1)
|
|
| yakkety |
Released
(1.5-2ubuntu0.1)
|
|
|
Patches: upstream: https://github.com/pyca/cryptography/commit/b924696b2e8731f39696584d12cceeb3aeb2d874 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | High |
| Availability impact | None |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |