CVE-2019-9748 Information

Description

In tinysvcmdns through 2018-01-16 an mDNS server processing a crafted packet can perform arbitrary data read operations up to 16383 bytes from the start of the buffer. This can lead to a segmentation fault in uncompress_nlabel in mdns.c and a crash of the server (depending on the memory protection of the CPU and the operating system) or disclosure of memory content via error messages or a server response. NOTE: the product’s web site states \This project is un-maintained and has been since 2013. … There are known vulnerabilities … You are advised to NOT use this library for any new projects / products.\

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Reference

https://bitbucket.org/geekman/tinysvcmdns/issues/10/arbitrary-memory-read-while-parsing

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

HIGH

Base Severity

9.1