#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
include('compat.inc');
if (description)
{
script_id(172186);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/21");
script_cve_id("CVE-2023-25690", "CVE-2023-27522");
script_xref(name:"IAVA", value:"2023-A-0124-S");
script_name(english:"Apache 2.4.x < 2.4.56 Multiple Vulnerabilities");
script_set_attribute(attribute:"synopsis", value:
"The remote web server is affected by multiple vulnerabilities.");
script_set_attribute(attribute:"description", value:
"The version of Apache httpd installed on the remote host is prior to 2.4.56. It is, therefore, affected by multiple
vulnerabilities as referenced in the 2.4.56 advisory.
- HTTP request splitting with mod_rewrite and mod_proxy: Some mod_proxy configurations on Apache HTTP Server
versions 2.4.0 through 2.4.55 allow a HTTP Request Smuggling attack. Configurations are affected when
mod_proxy is enabled along with some form of RewriteRule or ProxyPassMatch in which a non-specific pattern
matches some portion of the user-supplied request-target (URL) data and is then re-inserted into the
proxied request-target using variable substitution. For example, something like: RewriteEngine on
RewriteRule ^/here/(.*) http://example.com:8080/elsewhere?$1 http://example.com:8080/elsewhere ; [P]
ProxyPassReverse /here/ http://example.com:8080/ http://example.com:8080/ Request splitting/smuggling
could result in bypass of access controls in the proxy server, proxying unintended URLs to existing origin
servers, and cache poisoning. Acknowledgements: finder: Lars Krapf of Adobe (CVE-2023-25690)
- Apache HTTP Server: mod_proxy_uwsgi HTTP response splitting: HTTP Response Smuggling vulnerability in
Apache HTTP Server via mod_proxy_uwsgi. This issue affects Apache HTTP Server: from 2.4.30 through 2.4.55.
Special characters in the origin response header can truncate/split the response forwarded to the client.
Acknowledgements: finder: Dimas Fariski Setyawan Putra (nyxsorcerer) (CVE-2023-27522)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"solution", value:
"Upgrade to Apache version 2.4.56 or later.");
script_set_attribute(attribute:"agent", value:"all");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-25690");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2023/01/29");
script_set_attribute(attribute:"patch_publication_date", value:"2023/03/07");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/03/07");
script_set_attribute(attribute:"plugin_type", value:"combined");
script_set_attribute(attribute:"cpe", value:"cpe:/a:apache:httpd");
script_set_attribute(attribute:"cpe", value:"cpe:/a:apache:http_server");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Web Servers");
script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("apache_http_version.nasl", "apache_http_server_nix_installed.nbin", "apache_httpd_win_installed.nbin");
script_require_keys("installed_sw/Apache");
exit(0);
}
include('vcf.inc');
include('vcf_extras.inc');
app_info = vcf::apache_http_server::combined_get_app_info(app:'Apache');
var constraints = [
{ 'max_version' : '2.4.55', 'fixed_version' : '2.4.56' }
];
vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);
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