Detections
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Alpine: libcurl, multiple curl packages: security update to 7.87.0-r0

high Tenable Self-Hosted Container Security Plugin ID 423832

Description

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

 - A vulnerability exists in curl <7.87.0 HSTS check that could be bypassed to trick it to keep using HTTP.
 Using its HSTS support, curl can be instructed to use HTTPS instead of using an insecure clear-text HTTP
 step even when HTTP is provided in the URL. However, the HSTS mechanism could be bypassed if the host name
 in the given URL first uses IDN characters that get replaced to ASCII counterparts as part of the IDN
 conversion. Like using the character UTF-8 U+3002 (IDEOGRAPHIC FULL STOP) instead of the common ASCII full
 stop (U+002E) `.`. Then in a subsequent request, it does not detect the HSTS state and makes a clear text
 transfer. Because it would store the info IDN encoded but look for it IDN decoded. (CVE-2022-43551)

 - 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. (CVE-2022-43552)

See Also

https://security.alpinelinux.org/vuln/CVE-2022-43551

https://security.alpinelinux.org/vuln/CVE-2022-43552

Plugin Details

Severity: High

ID: 423832

Version: Revision 1.8

Type: Local

Published: 4/4/2025

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2022-43551

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 12/21/2022

Reference Information

CVE: CVE-2022-43551, CVE-2022-43552

IAVA: 2023-A-0008-S