CVE-2018-1000808
Published: 8 October 2018
Python Cryptographic Authority pyopenssl version Before 17.5.0 contains a CWE - 401 : Failure to Release Memory Before Removing Last Reference vulnerability in PKCS #12 Store that can result in Denial of service if memory runs low or is exhausted. This attack appear to be exploitable via Depends upon calling application, however it could be as simple as initiating a TLS connection. Anything that would cause the calling application to reload certificates from a PKCS #12 store.. This vulnerability appears to have been fixed in 17.5.0.
Notes
| Author | Note |
|---|---|
| mdeslaur | requires python-cryptography 2.1.4 which adds X509_up_ref, see https://github.com/pyca/cryptography/pull/4028 |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
pyopenssl Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(17.5.0-1)
|
| cosmic |
Not vulnerable
(17.5.0-1)
|
|
| trusty |
Not vulnerable
(code not present)
|
|
| upstream |
Released
(17.5.0)
|
|
| xenial |
Released
(0.15.1-2ubuntu0.2)
|
|
|
Patches: upstream: https://github.com/pyca/pyopenssl/pull/723 upstream: https://github.com/pyca/pyopenssl/commit/e73818600065821d588af475b024f4eb518c3509 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.9 |
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |