PT-2023-2924 · Curl+11 · Curl+11
Hiroki Kurosawa
+1
·
Published
2023-04-19
·
Updated
2026-05-18
·
CVE-2023-28322
CVSS v2.0
7.8
High
| Vector | AV:N/AC:L/Au:N/C:C/I:N/A:N |
Name of the Vulnerable Software and Affected Versions
curl versions prior to 8.1.0
Description
An information disclosure issue exists when doing HTTP(S) transfers, where libcurl might erroneously use the read callback (
CURLOPT READFUNCTION) to ask for data to send, even when the CURLOPT POSTFIELDS option has been set. This occurs if the same handle previously was used to issue a PUT request which used that callback. The flaw may cause the application to misbehave, sending off the wrong data or using memory after free in the second transfer. The problem exists in the logic for a reused handle when it is changed from a PUT to a POST.Recommendations
For versions prior to 8.1.0, update to version 8.1.0 or later to resolve the issue. As a temporary workaround, consider avoiding the reuse of handles for
PUT and POST requests, or disabling the CURLOPT READFUNCTION callback when switching from PUT to POST to minimize the risk of exploitation.Exploit
Fix
Information Disclosure
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Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Linuxmint
Apple Macos
Red Hat
Red Os
Rocky Linux
Suse
Ubuntu
Curl