5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
5.8 Medium
AI Score
Confidence
High
0.003 Low
EPSS
Percentile
68.3%
The remote host is affected by the vulnerability described in GLSA-202402-18 (Exim: Multiple Vulnerabilities)
Exim before 4.97.1 allows SMTP smuggling in certain PIPELINING/CHUNKING configurations. Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This occurs because Exim supports <LF>.<CR><LF> but some other popular e-mail servers do not. (CVE-2023-51766)
NTLM Challenge Out-Of-Bounds Read Information Disclosure Vulnerability [epel-all] (CVE-2023-42114)
AUTH Out-Of-Bounds Write Remote Code Execution Vulnerability [epel-all] (CVE-2023-42115)
Exim SMTP Challenge Stack-based Buffer Overflow Remote Code Execution Vulnerability (CVE-2023-42116, CVE-2023-42117)
dnsdb Out-Of-Bounds Read Information Disclosure Vulnerability [epel-all] (CVE-2023-42119)
Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# @NOAGENT@
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 202402-18.
#
# The advisory text is Copyright (C) 2001-2021 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#
include('compat.inc');
if (description)
{
script_id(190665);
script_version("1.0");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/18");
script_cve_id(
"CVE-2023-42114",
"CVE-2023-42115",
"CVE-2023-42116",
"CVE-2023-42117",
"CVE-2023-42119",
"CVE-2023-51766"
);
script_name(english:"GLSA-202402-18 : Exim: Multiple Vulnerabilities");
script_set_attribute(attribute:"synopsis", value:
"");
script_set_attribute(attribute:"description", value:
"The remote host is affected by the vulnerability described in GLSA-202402-18 (Exim: Multiple Vulnerabilities)
- Exim before 4.97.1 allows SMTP smuggling in certain PIPELINING/CHUNKING configurations. Remote attackers
can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address,
allowing bypass of an SPF protection mechanism. This occurs because Exim supports <LF>.<CR><LF> but some
other popular e-mail servers do not. (CVE-2023-51766)
- NTLM Challenge Out-Of-Bounds Read Information Disclosure Vulnerability [epel-all] (CVE-2023-42114)
- AUTH Out-Of-Bounds Write Remote Code Execution Vulnerability [epel-all] (CVE-2023-42115)
- Exim SMTP Challenge Stack-based Buffer Overflow Remote Code Execution Vulnerability (CVE-2023-42116,
CVE-2023-42117)
- dnsdb Out-Of-Bounds Read Information Disclosure Vulnerability [epel-all] (CVE-2023-42119)
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:"see_also", value:"https://security.gentoo.org/glsa/202402-18");
script_set_attribute(attribute:"see_also", value:"https://bugs.gentoo.org/show_bug.cgi?id=914923");
script_set_attribute(attribute:"see_also", value:"https://bugs.gentoo.org/show_bug.cgi?id=921520");
script_set_attribute(attribute:"solution", value:
"All Exim users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose >=mail-mta/exim-4.97.1");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");
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:N/I:L/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-51766");
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:"2023/10/02");
script_set_attribute(attribute:"patch_publication_date", value:"2024/02/18");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/02/18");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:exim");
script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Gentoo Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");
exit(0);
}
include('qpkg.inc');
if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item('Host/Gentoo/release')) audit(AUDIT_OS_NOT, 'Gentoo');
if (!get_kb_item('Host/Gentoo/qpkg-list')) audit(AUDIT_PACKAGE_LIST_MISSING);
var flag = 0;
var packages = [
{
'name' : 'mail-mta/exim',
'unaffected' : make_list("ge 4.97.1"),
'vulnerable' : make_list("lt 4.97.1")
}
];
foreach var package( packages ) {
if (isnull(package['unaffected'])) package['unaffected'] = make_list();
if (isnull(package['vulnerable'])) package['vulnerable'] = make_list();
if (qpkg_check(package: package['name'] , unaffected: package['unaffected'], vulnerable: package['vulnerable'])) flag++;
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : qpkg_report_get()
);
exit(0);
}
else
{
qpkg_tests = list_uniq(qpkg_tests);
var tested = qpkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Exim');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-42114
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-42115
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-42116
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-42117
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-42119
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-51766
bugs.gentoo.org/show_bug.cgi?id=914923
bugs.gentoo.org/show_bug.cgi?id=921520
security.gentoo.org/glsa/202402-18
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
5.8 Medium
AI Score
Confidence
High
0.003 Low
EPSS
Percentile
68.3%