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  5. CVE-2018-1000807

CVE-2018-1000807: PyOpenSSL Use-After-Free vulnerability

October 10, 2018 (updated October 15, 2024)

It was discovered that pyOpenSSL incorrectly handled memory when handling X509 objects. A remote attacker could use this issue to cause pyOpenSSL to crash, resulting in a denial of service, or possibly execute arbitrary code. This attack appears to be exploitable via Depends on the calling application and if it retains a reference to the memory. This vulnerability appears to have been fixed in 17.5.0.

References

  • access.redhat.com/errata/RHSA-2019:0085
  • github.com/advisories/GHSA-p28m-34f6-967q
  • github.com/pyca/pyopenssl
  • github.com/pyca/pyopenssl/commit/e73818600065821d588af475b024f4eb518c3509
  • github.com/pyca/pyopenssl/pull/723
  • github.com/pypa/advisory-database/tree/main/vulns/pyopenssl/PYSEC-2018-23.yaml
  • nvd.nist.gov/vuln/detail/CVE-2018-1000807
  • usn.ubuntu.com/3813-1

Code Behaviors & Features

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Affected versions

All versions before 17.5.0

Fixed versions

  • 17.5.0

Solution

Upgrade to version 17.5.0 or above.

Impact 8.1 HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Learn more about CVSS

Weakness

  • CWE-416: Use After Free

Source file

pypi/pyOpenSSL/CVE-2018-1000807.yml

Spotted a mistake? Edit the file on GitLab.

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