Description
curl before 7.86.0 has a double free. If curl is told to use an HTTP proxy for a transfer with a non-HTTP(S) URL, it sets up the connection to the remote server by issuing a CONNECT request to the proxy, and then tunnels the rest of the protocol through. An HTTP proxy might refuse this request (HTTP proxies often only allow outgoing connections to specific port numbers, like 443 for HTTPS) and instead return a non-200 status code to the client. Due to flaws in the error/cleanup handling, this could trigger a double free in curl if one of the following schemes were used in the URL for the transfer: dict, gopher, gophers, ldap, ldaps, rtmp, rtmps, or telnet. The earliest affected version is 7.77.0.
Published: 2022-10-29
Score: 8.1 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2022-45972 curl before 7.86.0 has a double free. If curl is told to use an HTTP proxy for a transfer with a non-HTTP(S) URL, it sets up the connection to the remote server by issuing a CONNECT request to the proxy, and then tunnels the rest of the protocol through. An HTTP proxy might refuse this request (HTTP proxies often only allow outgoing connections to specific port numbers, like 443 for HTTPS) and instead return a non-200 status code to the client. Due to flaws in the error/cleanup handling, this could trigger a double free in curl if one of the following schemes were used in the URL for the transfer: dict, gopher, gophers, ldap, ldaps, rtmp, rtmps, or telnet. The earliest affected version is 7.77.0.
Ubuntu USN Ubuntu USN USN-5702-1 curl vulnerabilities
History

Wed, 07 May 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Subscriptions

Apple Macos
Fedoraproject Fedora
Haxx Curl
Netapp H300s H300s Firmware H410s H410s Firmware H500s H500s Firmware H700s H700s Firmware Ontap 9
Redhat Jboss Core Services
Splunk Universal Forwarder
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-05-07T13:59:25.363Z

Reserved: 2022-10-13T00:00:00.000Z

Link: CVE-2022-42915

cve-icon Vulnrichment

Updated: 2024-08-03T13:19:05.396Z

cve-icon NVD

Status : Modified

Published: 2022-10-29T20:15:09.700

Modified: 2025-05-07T14:15:33.860

Link: CVE-2022-42915

cve-icon Redhat

Severity : Moderate

Publid Date: 2022-10-26T00:00:00Z

Links: CVE-2022-42915 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses