CVE-2017-1000211: lynx_project lynx Use After Free

Vulnerability summary

CVE-2017-1000211 is a medium (CVSS 5.3) Use After Free vulnerability in lynx_project lynx. EPSS estimates a 1.73% chance of exploitation in the next 30 days, higher than 77.6% of scored vulnerabilities.

Timeline

1. 17-11-2017
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

Description

Lynx before 2.8.9dev.16 is vulnerable to a use after free in the HTML parser resulting in memory disclosure, because HTML_put_string() can append a chunk onto itself.

• 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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.