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vulnrichmentHackeroneVULNRICHMENT:CVE-2022-43552
HistoryFeb 09, 2023 - 12:00 a.m.

CVE-2022-43552

2023-02-0900:00:00
CWE-416
hackerone
github.com
6
curl
use after free
vulnerability
http proxy
smb
telnet

AI Score

5.9

Confidence

High

EPSS

0.001

Percentile

47.2%

SSVC

Exploitation

none

Automatable

no

Technical Impact

partial

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.

CNA Affected

[
  {
    "vendor": "n/a",
    "product": "https://github.com/curl/curl",
    "versions": [
      {
        "status": "affected",
        "version": "Fixed in curl 7.87.0"
      }
    ]
  }
]