7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.4 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
41.3%
The version of golang installed on the remote host is prior to 1.20.12-1.49. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2024-1903 advisory.
A malicious HTTP sender can use chunk extensions to cause a receiver reading from a request or response body to read many more bytes from the network than are in the body. A malicious HTTP client can further exploit this to cause a server to automatically read a large amount of data (up to about 1GiB) when a handler fails to read the entire body of a request. Chunk extensions are a little-used HTTP feature which permit including additional metadata in a request or response body sent using the chunked encoding. The net/http chunked encoding reader discards this metadata. A sender can exploit this by inserting a large metadata segment with each byte transferred. The chunk reader now produces an error if the ratio of real body to encoded bytes grows too small. (CVE-2023-39326)
The filepath package does not recognize paths with a ??\ prefix as special. On Windows, a path beginning with ??\ is a Root Local Device path equivalent to a path beginning with \?. Paths with a ??\ prefix may be used to access arbitrary locations on the system. For example, the path ??\c:\x is equivalent to the more common path c:\x. Before fix, Clean could convert a rooted path such as \a..??\b into the root local device path ??\b. Clean will now convert this to .??\b. Similarly, Join(, ??, b) could convert a seemingly innocent sequence of path elements into the root local device path ??\b. Join will now convert this to .??\b. In addition, with fix, IsAbs now correctly reports paths beginning with ??\ as absolute, and VolumeName correctly reports the ??\ prefix as a volume name. UPDATE: Go 1.20.11 and Go 1.21.4 inadvertently changed the definition of the volume name in Windows paths starting with ?, resulting in filepath.Clean(?\c:) returning ?\c: rather than ?\c:\ (among other effects). The previous behavior has been restored. (CVE-2023-45283)
On Windows, The IsLocal function does not correctly detect reserved device names in some cases. Reserved names followed by spaces, such as COM1 , and reserved names COM and LPT followed by superscript 1, 2, or 3, are incorrectly reported as local. With fix, IsLocal now correctly reports these names as non- local. (CVE-2023-45284)
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.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2024-1903.
##
include('compat.inc');
if (description)
{
script_id(187711);
script_version("1.1");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/08");
script_cve_id("CVE-2023-39326", "CVE-2023-45283", "CVE-2023-45284");
script_xref(name:"IAVB", value:"2023-B-0096-S");
script_name(english:"Amazon Linux AMI : golang (ALAS-2024-1903)");
script_set_attribute(attribute:"synopsis", value:
"The remote Amazon Linux AMI host is missing a security update.");
script_set_attribute(attribute:"description", value:
"The version of golang installed on the remote host is prior to 1.20.12-1.49. It is, therefore, affected by multiple
vulnerabilities as referenced in the ALAS-2024-1903 advisory.
- A malicious HTTP sender can use chunk extensions to cause a receiver reading from a request or response
body to read many more bytes from the network than are in the body. A malicious HTTP client can further
exploit this to cause a server to automatically read a large amount of data (up to about 1GiB) when a
handler fails to read the entire body of a request. Chunk extensions are a little-used HTTP feature which
permit including additional metadata in a request or response body sent using the chunked encoding. The
net/http chunked encoding reader discards this metadata. A sender can exploit this by inserting a large
metadata segment with each byte transferred. The chunk reader now produces an error if the ratio of real
body to encoded bytes grows too small. (CVE-2023-39326)
- The filepath package does not recognize paths with a \??\ prefix as special. On Windows, a path beginning
with \??\ is a Root Local Device path equivalent to a path beginning with \\?\. Paths with a \??\ prefix
may be used to access arbitrary locations on the system. For example, the path \??\c:\x is equivalent to
the more common path c:\x. Before fix, Clean could convert a rooted path such as \a\..\??\b into the root
local device path \??\b. Clean will now convert this to .\??\b. Similarly, Join(\, ??, b) could convert a
seemingly innocent sequence of path elements into the root local device path \??\b. Join will now convert
this to \.\??\b. In addition, with fix, IsAbs now correctly reports paths beginning with \??\ as absolute,
and VolumeName correctly reports the \??\ prefix as a volume name. UPDATE: Go 1.20.11 and Go 1.21.4
inadvertently changed the definition of the volume name in Windows paths starting with \?, resulting in
filepath.Clean(\?\c:) returning \?\c: rather than \?\c:\ (among other effects). The previous behavior has
been restored. (CVE-2023-45283)
- On Windows, The IsLocal function does not correctly detect reserved device names in some cases. Reserved
names followed by spaces, such as COM1 , and reserved names COM and LPT followed by superscript 1,
2, or 3, are incorrectly reported as local. With fix, IsLocal now correctly reports these names as non-
local. (CVE-2023-45284)
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://alas.aws.amazon.com/ALAS-2024-1903.html");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2023-39326.html");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2023-45283.html");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2023-45284.html");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/faqs.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:C/I:N/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:H/I:N/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-2023-45283");
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:"2023/11/09");
script_set_attribute(attribute:"patch_publication_date", value:"2024/01/03");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/01/09");
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-shared");
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_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Amazon Linux 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/AmazonLinux/release", "Host/AmazonLinux/rpm-list");
exit(0);
}
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var alas_release = get_kb_item("Host/AmazonLinux/release");
if (isnull(alas_release) || !strlen(alas_release)) audit(AUDIT_OS_NOT, "Amazon Linux");
var os_ver = pregmatch(pattern: "^AL(A|\d+|-\d+)", string:alas_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);
var pkgs = [
{'reference':'golang-1.20.12-1.49.amzn1', 'cpu':'i686', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-1.20.12-1.49.amzn1', 'cpu':'x86_64', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-bin-1.20.12-1.49.amzn1', 'cpu':'i686', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-bin-1.20.12-1.49.amzn1', 'cpu':'x86_64', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-docs-1.20.12-1.49.amzn1', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-misc-1.20.12-1.49.amzn1', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-shared-1.20.12-1.49.amzn1', 'cpu':'i686', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-shared-1.20.12-1.49.amzn1', 'cpu':'x86_64', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-src-1.20.12-1.49.amzn1', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-tests-1.20.12-1.49.amzn1', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE}
];
var flag = 0;
foreach var package_array ( pkgs ) {
var reference = NULL;
var _release = NULL;
var sp = NULL;
var _cpu = NULL;
var el_string = NULL;
var rpm_spec_vers_cmp = NULL;
var epoch = NULL;
var allowmaj = NULL;
var exists_check = NULL;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) _release = package_array['release'];
if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
if (reference && _release && (!exists_check || rpm_exists(release:_release, rpm:exists_check))) {
if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : rpm_report_get()
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "golang / golang-bin / golang-docs / etc");
}
Vendor | Product | Version | CPE |
---|---|---|---|
amazon | linux | golang | p-cpe:/a:amazon:linux:golang |
amazon | linux | golang-bin | p-cpe:/a:amazon:linux:golang-bin |
amazon | linux | golang-docs | p-cpe:/a:amazon:linux:golang-docs |
amazon | linux | golang-misc | p-cpe:/a:amazon:linux:golang-misc |
amazon | linux | golang-shared | p-cpe:/a:amazon:linux:golang-shared |
amazon | linux | golang-src | p-cpe:/a:amazon:linux:golang-src |
amazon | linux | golang-tests | p-cpe:/a:amazon:linux:golang-tests |
amazon | linux | cpe:/o:amazon:linux |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-39326
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-45283
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-45284
alas.aws.amazon.com/ALAS-2024-1903.html
alas.aws.amazon.com/cve/html/CVE-2023-39326.html
alas.aws.amazon.com/cve/html/CVE-2023-45283.html
alas.aws.amazon.com/cve/html/CVE-2023-45284.html
alas.aws.amazon.com/faqs.html
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.4 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
41.3%