CVE Vulnerabilities

CVE-2017-1000211

Use After Free

Published: Nov 17, 2017 | Modified: Apr 20, 2025
CVSS 3.x
5.3
MEDIUM
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N
RedHat/V2
RedHat/V3
5.3 LOW
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Ubuntu
MEDIUM

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.

Weakness

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 Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Name Vendor Start Version End Version
Lynx Lynx_project 2.8.9-dev15 (including) 2.8.9-dev15 (including)
Lynx Ubuntu esm-apps/xenial *
Lynx Ubuntu xenial *
Lynx Ubuntu zesty *

Potential Mitigations

References