CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
AI Score
Confidence
High
EPSS
Percentile
85.7%
It was discovered that net/http (through net/textproto) in golang does not correctly interpret HTTP requests where an HTTP header contains spaces before the colon. This could be abused by an attacker to smuggle HTTP requests when a proxy or a firewall is placed behind a server implemented in Go or to filter bypasses depending on the specific network configuration.(CVE-2019-16276)
Go before 1.12.10 and 1.13.x before 1.13.1 allow HTTP Request Smuggling.(CVE-2019-16276)
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2020-1336.
#
include('compat.inc');
if (description)
{
script_id(133006);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/29");
script_cve_id("CVE-2019-16276");
script_xref(name:"ALAS", value:"2020-1336");
script_name(english:"Amazon Linux AMI : golang (ALAS-2020-1336)");
script_set_attribute(attribute:"synopsis", value:
"The remote Amazon Linux AMI host is missing a security update.");
script_set_attribute(attribute:"description", value:
"It was discovered that net/http (through net/textproto) in golang does
not correctly interpret HTTP requests where an HTTP header contains
spaces before the colon. This could be abused by an attacker to
smuggle HTTP requests when a proxy or a firewall is placed behind a
server implemented in Go or to filter bypasses depending on the
specific network configuration.(CVE-2019-16276)
Go before 1.12.10 and 1.13.x before 1.13.1 allow HTTP Request
Smuggling.(CVE-2019-16276)");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/ALAS-2020-1336.html");
script_set_attribute(attribute:"solution", value:
"Run 'yum update golang' to update your system.");
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:U/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:H/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-2019-16276");
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:"2019/09/30");
script_set_attribute(attribute:"patch_publication_date", value:"2020/01/15");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/01/17");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:golang");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:golang-bin");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:golang-docs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:golang-misc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:golang-race");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:golang-src");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:golang-tests");
script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Amazon Linux Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/rpm-list");
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/AmazonLinux/release");
if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux");
os_ver = pregmatch(pattern: "^AL(A|\d)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "A")
{
if (os_ver == 'A') os_ver = 'AMI';
audit(AUDIT_OS_NOT, "Amazon Linux AMI", "Amazon Linux " + os_ver);
}
if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
flag = 0;
if (rpm_check(release:"ALA", reference:"golang-1.13.4-1.57.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"golang-bin-1.13.4-1.57.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"golang-docs-1.13.4-1.57.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"golang-misc-1.13.4-1.57.amzn1")) flag++;
if (rpm_check(release:"ALA", cpu:"x86_64", reference:"golang-race-1.13.4-1.57.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"golang-src-1.13.4-1.57.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"golang-tests-1.13.4-1.57.amzn1")) flag++;
if (flag)
{
if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
else security_warning(0);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "golang / golang-bin / golang-docs / golang-misc / golang-race / etc");
}
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
AI Score
Confidence
High
EPSS
Percentile
85.7%