CVE-2018-15560
Published: 20 August 2018
PyCryptodome before 3.6.6 has an integer overflow in the data_len variable in AESNI.c, related to the AESNI_encrypt and AESNI_decrypt functions, leading to the mishandling of messages shorter than 16 bytes.
Notes
| Author | Note |
|---|---|
| leosilva | tested with poc file and not affected. ECB/AES need exactly 16block size of muiltiple size to working according with the lib. Otherwise it gives a ValueError, what is normal and expected in the lib. Also, code affected not present in bionic or cosmic. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
pycryptodome Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(code not present)
|
| trusty |
Does not exist
|
|
| upstream |
Released
(3.6.6)
|
|
| xenial |
Does not exist
|
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 | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |