PyPi: Pyopenssl

CVE-2018-1000808

Safety vulnerability ID: 36534

This vulnerability was reviewed by experts

The information on this page was manually curated by our Cybersecurity Intelligence Team.

Created at Oct 08, 2018 Updated at Sep 20, 2024
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Advisory

Pyopenssl 17.5.0 includes a fix for CVE-2018-1000808: 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 appears 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.
#NOTE: The data we include in this advisory differs from the publicly available on nvd.nist.gov. 'cryptography' dependency was introduced in release 0.14a2.

Affected package

pyopenssl

Latest version: 24.2.1

Python wrapper module around the OpenSSL library

Affected versions

Fixed versions

Vulnerability changelog

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.


CONFIRM:https://github.com/pyca/pyopenssl/pull/723: https://github.com/pyca/pyopenssl/pull/723

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Severity Details

CVSS Base Score

MEDIUM 5.9

CVSS v3 Details

MEDIUM 5.9
Attack Vector (AV)
NETWORK
Attack Complexity (AC)
HIGH
Privileges Required (PR)
NONE
User Interaction (UI)
NONE
Scope (S)
UNCHANGED
Confidentiality Impact (C)
NONE
Integrity Impact (I)
NONE
Availability Availability (A)
HIGH

CVSS v2 Details

MEDIUM 4.3
Access Vector (AV)
NETWORK
Access Complexity (AC)
MEDIUM
Authentication (Au)
NONE
Confidentiality Impact (C)
NONE
Integrity Impact (I)
NONE
Availability Impact (A)
PARTIAL