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pyca/pyopenssl · Security

Pyopenssl Incorrect Memory Management

GHSA ID
GHSA-2rcm-phc9-3945
CVE ID
CVE-2018-1000808
Severity
high
Published
Updated
CVSS
5.9 · CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v3
5.9 · CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4
8.2 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Description

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.

CWEs

  • CWE-401 · Missing Release of Memory after Effective Lifetime
  • CWE-404 · Improper Resource Shutdown or Release

References