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CVE-2022-43552

nvd nist
Published: Feb 9, 2023Modified: Jun 17, 2026

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5.9
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability: 2.2 / Impact: 3.6
Source: NVD

Description

A use after free vulnerability exists in curl <7.87.0. Curl can be asked to *tunnel* virtually all protocols it supports through an HTTP proxy. HTTP proxies can (and often do) deny such tunnel operations. When getting denied to tunnel the specific protocols SMB or TELNET, curl would use a heap-allocated struct after it had been freed, in its transfer shutdown code path.

Affected (5)

Haxx
1 product
Curl
Apple
1 product
Macos
Splunk
1 product
Universal Forwarder
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Curl
Before 7.87.0
Configuration B
1 vulnerable
Vulnerable SoftwareAffected Versions
Macos
From 13.0 to 13.3
Configuration C
3 vulnerable
Vulnerable SoftwareAffected Versions
Splunk
Universal Forwarder
From 8.2.0 to 8.2.12
Universal Forwarder
From 9.0.0 to 9.0.6
Universal Forwarder
Version 9.1.0

Related CWEs

CWE-416
Use After Free
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (10)

Source: support@hackerone.com
Mailing ListThird Party Advisory
Source: support@hackerone.com
ExploitIssue TrackingThird Party Advisory
Source: support@hackerone.com
Third Party Advisory
Source: support@hackerone.com
Vendor Advisory
Source: support@hackerone.com
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
ExploitIssue TrackingThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

Timeline

No history available yet.