CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
AI Score
Confidence
High
The version of Curl installed on the remote host is between 7.41.0 prior to 8.10.0. It is, therefore, affected by a security bypass vulnerability. When curl is told to use the Certificate Status Request TLS extension, often referred to as OCSP stapling, to verify that the server certificate is valid, it might fail to detect some OCSP problems and instead wrongly consider the response as fine. If the returned status reports another error than ‘revoked’ (like for example ‘unauthorized’) it is not treated as a bad certficate.
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
include('compat.inc');
if (description)
{
script_id(207231);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/09/16");
script_cve_id("CVE-2024-8096");
script_xref(name:"IAVA", value:"2024-A-0571");
script_name(english:"Curl 7.41.0 < 8.10.0 Security Bypass (CVE-2024-8096)");
script_set_attribute(attribute:"synopsis", value:
"The remote host has a program that is affected by a security bypass vulnerability.");
script_set_attribute(attribute:"description", value:
"The version of Curl installed on the remote host is between 7.41.0 prior to 8.10.0. It is, therefore, affected by a
security bypass vulnerability. When curl is told to use the Certificate Status Request TLS extension, often referred to
as OCSP stapling, to verify that the server certificate is valid, it might fail to detect some OCSP problems and
instead wrongly consider the response as fine. If the returned status reports another error than 'revoked' (like for
example 'unauthorized') it is not treated as a bad certficate.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://curl.se/docs/CVE-2024-8096.html");
script_set_attribute(attribute:"solution", value:
"Upgrade Curl to version 8.10.0 or later");
script_set_attribute(attribute:"agent", value:"all");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-8096");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"vuln_publication_date", value:"2024/09/11");
script_set_attribute(attribute:"patch_publication_date", value:"2024/09/11");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/09/13");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:haxx:curl");
script_set_attribute(attribute:"stig_severity", value:"I");
script_set_attribute(attribute:"thorough_tests", value:"true");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Misc.");
script_copyright(english:"This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("curl_win_installed.nbin", "curl_nix_installed.nbin");
script_require_keys("installed_sw/Curl");
exit(0);
}
include('vcf.inc');
var win_local = FALSE;
if (!empty_or_null(get_kb_item('SMB/Registry/Enumerated')))
win_local = TRUE;
var app_info = vcf::get_app_info(app:'Curl', win_local:win_local);
vcf::check_all_backporting(app_info:app_info);
var constraints = [ {'min_version': '7.41.0', 'fixed_version': '8.10.0'} ];
vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);