IBM AIX: curl_advisory2 (CVE-2023-23916): Security vulnerabilities in cURL for AIX

IBM AIX: curl_advisory2 (CVE-2023-23916): Security vulnerabilities in cURL for AIX

Severity

7

CVSS

(AV:N/AC:M/Au:N/C:N/I:N/A:C)

Published

02/23/2023

Created

07/27/2023

Added

07/27/2023

Modified

01/30/2025

Description

An allocation of resources without limits or throttling vulnerability exists in curl <v7.88.0 based on the "chained" HTTP compression algorithms, meaning that a server response can be compressed multiple times and potentially with differentalgorithms. The number of acceptable "links" in this "decompression chain" wascapped, but the cap was implemented on a per-header basis allowing a maliciousserver to insert a virtually unlimited number of compression steps simply byusing many headers. The use of such a decompression chain could result in a "malloc bomb", making curl end up spending enormous amounts of allocated heap memory, or trying to and returning out of memory errors.

Solution(s)

• ibm-aix-curl_advisory2

References

• https://attackerkb.com/topics/cve-2023-23916
• CVE - 2023-23916
• https://aix.software.ibm.com/aix/efixes/security/curl_advisory2.asc