Alpine: curl: security update to 7.83.1-r4

critical Tenable Self-Hosted Container Security Plugin ID 404027

Description

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

- When doing HTTP(S) transfers, libcurl might erroneously use the read callback (`CURLOPT_READFUNCTION`) to
ask for data to send, even when the `CURLOPT_POSTFIELDS` option has been set, if the same handle
previously was used to issue a `PUT` request which used that callback. This flaw may surprise the
application and cause it to misbehave and either send off the wrong data or use memory after free or
similar in the subsequent `POST` request. The problem exists in the logic for a reused handle when it is
changed from a PUT to a POST. (CVE-2022-32221)

- 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. (CVE-2022-42915)

- In curl before 7.86.0, the HSTS check could be bypassed to trick it into staying with HTTP. Using its HSTS
support, curl can be instructed to use HTTPS directly (instead of using an insecure cleartext HTTP step)
even when HTTP is provided in the URL. This mechanism could be bypassed if the host name in the given URL
uses IDN characters that get replaced with ASCII counterparts as part of the IDN conversion, e.g., using
the character UTF-8 U+3002 (IDEOGRAPHIC FULL STOP) instead of the common ASCII full stop of U+002E (.).
The earliest affected version is 7.77.0 2021-05-26. (CVE-2022-42916)

Plugin Details

Severity: Critical

ID: 404027

Version: Revision 1.31

Type: Local

Family: Alpine Linux Local Security Checks

Published: 10/31/2023

Updated: 7/2/2026

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.43

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2022-32221

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 10/27/2022

Reference Information

CVE: CVE-2022-32221, CVE-2022-42915, CVE-2022-42916

IAVA: 2022-A-0451-S

Detections

Analytics