CVE-2018-1000807: canonical ubuntu_linux Use After Free

Vulnerability summary

CVE-2018-1000807 is a high (CVSS 8.1) Use After Free vulnerability in canonical ubuntu_linux. EPSS estimates a 4.08% chance of exploitation in the next 30 days, higher than 90.5% of scored vulnerabilities.

Timeline

1. 08-10-2018
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

Description

Python Cryptographic Authority pyopenssl version prior to version 17.5.0 contains a CWE-416: Use After Free vulnerability in X509 object handling that can result in Use after free can lead to possible denial of service or remote code execution.. This attack appear 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.

• CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.