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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTJyY20tcGhjOS0zOTQ1

Pyopenssl Incorrect Memory Management

It was discovered that pyOpenSSL incorrectly handled memory when performing operations on a PKCS #12 store. A remote attacker could possibly use this issue to cause pyOpenSSL to consume resources, resulting in a denial of service.

This attack appear to be exploitable via Depends upon calling application, however it could be as simple as initiating a TLS connection 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.

Permalink: https://github.com/advisories/GHSA-2rcm-phc9-3945
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTJyY20tcGhjOS0zOTQ1
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: about 6 years ago
Updated: about 1 month ago

CVSS Score: 5.9
CVSS vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Identifiers: GHSA-2rcm-phc9-3945, CVE-2018-1000808
References:

• https://nvd.nist.gov/vuln/detail/CVE-2018-1000808
• https://github.com/pyca/pyopenssl/pull/723
• https://access.redhat.com/errata/RHSA-2019:0085
• https://github.com/advisories/GHSA-2rcm-phc9-3945
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00014.html
• https://github.com/pyca/pyopenssl/commit/e73818600065821d588af475b024f4eb518c3509
• https://github.com/pypa/advisory-database/tree/main/vulns/pyopenssl/PYSEC-2018-24.yaml
• https://usn.ubuntu.com/3813-1

Repository: https://github.com/pyca/pyopenssl
Blast Radius: 24.3

Affected Packages