Vulnerability Details : CVE-2022-43552

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.
Published 2023-02-09 20:15:11
Updated 2024-03-27 14:55:09
Source HackerOne
View at NVD,   CVE.org
Vulnerability category: Memory Corruption

Products affected by CVE-2022-43552

Exploit prediction scoring system (EPSS) score for CVE-2022-43552

EPSS FAQ
0.15%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 51 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2022-43552

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.9
 MEDIUM CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
2.2
3.6
 NIST

CWE ids for CVE-2022-43552

  • 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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
    Assigned by:
    • nvd@nist.gov (Primary)
    • support@hackerone.com (Secondary)

References for CVE-2022-43552

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