7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.7 High
AI Score
Confidence
High
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.004 Low
EPSS
Percentile
72.4%
Exim is prone to an invalid free vulnerability.
# SPDX-FileCopyrightText: 2022 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only
CPE = "cpe:/a:exim:exim";
if (description)
{
script_oid("1.3.6.1.4.1.25623.1.0.150758");
script_version("2024-01-10T05:05:17+0000");
script_tag(name:"last_modification", value:"2024-01-10 05:05:17 +0000 (Wed, 10 Jan 2024)");
script_tag(name:"creation_date", value:"2022-08-08 09:15:11 +0000 (Mon, 08 Aug 2022)");
script_tag(name:"cvss_base", value:"7.8");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");
script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2022-08-11 00:13:00 +0000 (Thu, 11 Aug 2022)");
script_cve_id("CVE-2022-37451");
script_tag(name:"qod_type", value:"remote_banner_unreliable");
script_tag(name:"solution_type", value:"VendorFix");
script_name("Exim < 4.96 Invalid Free Vulnerability");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2022 Greenbone AG");
script_family("Denial of Service");
script_dependencies("gb_exim_smtp_detect.nasl");
script_mandatory_keys("exim/detected");
script_tag(name:"summary", value:"Exim is prone to an invalid free vulnerability.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"insight", value:"Exim has an invalid free in pam_converse in auths/call_pam.c
because store_free is not used after store_malloc.");
script_tag(name:"affected", value:"Exim version 4.95 and prior.");
script_tag(name:"solution", value:"Update to version 4.96 or later.");
script_xref(name:"URL", value:"https://www.openwall.com/lists/oss-security/2022/08/06/1");
exit(0);
}
include("host_details.inc");
include("version_func.inc");
if(!port = get_app_port(cpe: CPE))
exit(0);
if(!version = get_app_version(cpe: CPE, port: port))
exit(0);
if(version_is_less(version: version, test_version: "4.96")) {
report = report_fixed_ver(installed_version: version, fixed_version: "4.96");
security_message(port: port, data: report);
exit(0);
}
exit(99);
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.7 High
AI Score
Confidence
High
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.004 Low
EPSS
Percentile
72.4%