CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
97.0%
According to the versions of the dovecot packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :
A denial of service flaw was found in dovecot before 2.2.34. An attacker able to generate random SNI server names could exploit TLS SNI configuration lookups, leading to excessive memory usage and the process to restart.(CVE-2017-15130)
A specially crafted email delivered over SMTP and passed on to Dovecot by MTA can trigger an out of bounds read resulting in potential sensitive information disclosure and denial of service. In order to trigger this vulnerability, an attacker needs to send a specially crafted email message to the server.(CVE-2017-14461)
Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(132288);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/03");
script_cve_id("CVE-2017-14461", "CVE-2017-15130");
script_name(english:"EulerOS 2.0 SP3 : dovecot (EulerOS-SA-2019-2571)");
script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing multiple security updates.");
script_set_attribute(attribute:"description", value:
"According to the versions of the dovecot packages installed, the
EulerOS installation on the remote host is affected by the following
vulnerabilities :
- A denial of service flaw was found in dovecot before
2.2.34. An attacker able to generate random SNI server
names could exploit TLS SNI configuration lookups,
leading to excessive memory usage and the process to
restart.(CVE-2017-15130)
- A specially crafted email delivered over SMTP and
passed on to Dovecot by MTA can trigger an out of
bounds read resulting in potential sensitive
information disclosure and denial of service. In order
to trigger this vulnerability, an attacker needs to
send a specially crafted email message to the
server.(CVE-2017-14461)
Note that Tenable Network Security has extracted the preceding
description block directly from the EulerOS security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
# https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2019-2571
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?15e7e638");
script_set_attribute(attribute:"solution", value:
"Update the affected dovecot packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:N/A:P");
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:L/UI:N/S:U/C:L/I:N/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-14461");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"patch_publication_date", value:"2019/12/18");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/19");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:dovecot");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:dovecot-mysql");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:dovecot-pgsql");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:dovecot-pigeonhole");
script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Huawei Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2019-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
script_exclude_keys("Host/EulerOS/uvp_version");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");
sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(3)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP3");
uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP3", "EulerOS UVP " + uvp);
if (!get_kb_item("Host/EulerOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);
flag = 0;
pkgs = ["dovecot-2.2.10-5.h6",
"dovecot-mysql-2.2.10-5.h6",
"dovecot-pgsql-2.2.10-5.h6",
"dovecot-pigeonhole-2.2.10-5.h6"];
foreach (pkg in pkgs)
if (rpm_check(release:"EulerOS-2.0", sp:"3", reference:pkg)) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : rpm_report_get()
);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "dovecot");
}
Vendor | Product | Version | CPE |
---|---|---|---|
huawei | euleros | dovecot | p-cpe:/a:huawei:euleros:dovecot |
huawei | euleros | dovecot-mysql | p-cpe:/a:huawei:euleros:dovecot-mysql |
huawei | euleros | dovecot-pgsql | p-cpe:/a:huawei:euleros:dovecot-pgsql |
huawei | euleros | dovecot-pigeonhole | p-cpe:/a:huawei:euleros:dovecot-pigeonhole |
huawei | euleros | 2.0 | cpe:/o:huawei:euleros:2.0 |
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
97.0%