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Slackware Linux 14.0 / 14.1 / 14.2 / 15.0 / current curl Multiple Vulnerabilities (SSA:2022-179-01)

critical Nessus Plugin ID 162585

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Synopsis

The remote Slackware Linux host is missing a security update to curl.

Description

The version of curl installed on the remote host is prior to 7.84.0. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2022-179-01 advisory.

 - When curl < 7.84.0 saves cookies, alt-svc and hsts data to local files, it makes the operation atomic by finalizing the operation with a rename from a temporary name to the final target file name.In that rename operation, it might accidentally *widen* the permissions for the target file, leaving the updated file accessible to more users than intended. (CVE-2022-32207)

 - A malicious server can serve excessive amounts of `Set-Cookie:` headers in a HTTP response to curl and curl < 7.84.0 stores all of them. A sufficiently large amount of (big) cookies make subsequent HTTP requests to this, or other servers to which the cookies match, create requests that become larger than the threshold that curl uses internally to avoid sending crazy large requests (1048576 bytes) and instead returns an error.This denial state might remain for as long as the same cookies are kept, match and haven't expired. Due to cookie matching rules, a server on `foo.example.com` can set cookies that also would match for `bar.example.com`, making it it possible for a sister server to effectively cause a denial of service for a sibling site on the same second level domain using this method. (CVE-2022-32205)

 - curl < 7.84.0 supports chained HTTP compression algorithms, meaning that a serverresponse can be compressed multiple times and potentially with different algorithms. The number of acceptable links in this decompression chain was unbounded, allowing a malicious server to insert a virtually unlimited number of compression steps.The use of such a decompression chain could result in a malloc bomb, makingcurl end up spending enormous amounts of allocated heap memory, or trying toand returning out of memory errors. (CVE-2022-32206)

 - When curl < 7.84.0 does FTP transfers secured by krb5, it handles message verification failures wrongly.
 This flaw makes it possible for a Man-In-The-Middle attack to go unnoticed and even allows it to inject data to the client. (CVE-2022-32208)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade the affected curl package.

Plugin Details

Severity: Critical

ID: 162585

File Name: Slackware_SSA_2022-179-01.nasl

Version: 1.8

Type: local

Published: 6/28/2022

Updated: 10/19/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.2

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

CVSS Score Source: CVE-2022-32207

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.1

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:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:slackware:slackware_linux:15.0, cpe:/o:slackware:slackware_linux:14.0, p-cpe:/a:slackware:slackware_linux:curl, cpe:/o:slackware:slackware_linux:14.1, cpe:/o:slackware:slackware_linux, cpe:/o:slackware:slackware_linux:14.2

Required KB Items: Host/local_checks_enabled, Host/Slackware/release, Host/Slackware/packages

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 6/27/2022

Reference Information

CVE: CVE-2022-32205, CVE-2022-32206, CVE-2022-32207, CVE-2022-32208

IAVA: 2022-A-0255-S