CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
AI Score
Confidence
Low
EPSS
Percentile
17.6%
It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2024-596 advisory.
When a protocol selection parameter option disables all protocols without adding any then the default set of protocols would remain in the allowed set due to an error in the logic for removing protocols. The below command would perform a request to curl.se with a plaintext protocol which has been explicitly disabled. curl --proto -all,-http http://curl.se The flaw is only present if the set of selected protocols disables the entire set of available protocols, in itself a command with no practical use and therefore unlikely to be encountered in real situations. The curl security team has thus assessed this to be low severity bug. (CVE-2024-2004)
When an application tells libcurl it wants to allow HTTP/2 server push, and the amount of received headers for the push surpasses the maximum allowed limit (1000), libcurl aborts the server push. When aborting, libcurl inadvertently does not free all the previously allocated headers and instead leaks the memory.
Further, this error condition fails silently and is therefore not easily detected by an application.
(CVE-2024-2398)
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 2023 Security Advisory ALAS2023-2024-596.
##
include('compat.inc');
if (description)
{
script_id(194487);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/07/26");
script_cve_id("CVE-2024-2004", "CVE-2024-2398");
script_xref(name:"IAVA", value:"2024-A-0185-S");
script_name(english:"Amazon Linux 2023 : curl, curl-minimal, libcurl (ALAS2023-2024-596)");
script_set_attribute(attribute:"synopsis", value:
"The remote Amazon Linux 2023 host is missing a security update.");
script_set_attribute(attribute:"description", value:
"It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2024-596 advisory.
- When a protocol selection parameter option disables all protocols without adding any then the default set
of protocols would remain in the allowed set due to an error in the logic for removing protocols. The
below command would perform a request to curl.se with a plaintext protocol which has been explicitly
disabled. curl --proto -all,-http http://curl.se The flaw is only present if the set of selected protocols
disables the entire set of available protocols, in itself a command with no practical use and therefore
unlikely to be encountered in real situations. The curl security team has thus assessed this to be low
severity bug. (CVE-2024-2004)
- When an application tells libcurl it wants to allow HTTP/2 server push, and the amount of received headers
for the push surpasses the maximum allowed limit (1000), libcurl aborts the server push. When aborting,
libcurl inadvertently does not free all the previously allocated headers and instead leaks the memory.
Further, this error condition fails silently and is therefore not easily detected by an application.
(CVE-2024-2398)
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/AL2023/ALAS-2024-596.html");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2024-2004.html");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2024-2398.html");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/faqs.html");
script_set_attribute(attribute:"solution", value:
"Run 'dnf update curl --releasever 2023.4.20240429' to update your system.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/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:L/A:L");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-2004");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2024-2398");
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:"2024/03/27");
script_set_attribute(attribute:"patch_publication_date", value:"2024/04/25");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/04/29");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:curl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:curl-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:curl-debugsource");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:curl-minimal");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:curl-minimal-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libcurl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libcurl-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libcurl-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libcurl-minimal");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libcurl-minimal-debuginfo");
script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux:2023");
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 != "-2023")
{
if (os_ver == 'A') os_ver = 'AMI';
audit(AUDIT_OS_NOT, "Amazon Linux 2023", "Amazon Linux " + os_ver);
}
if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
var pkgs = [
{'reference':'curl-8.5.0-1.amzn2023.0.4', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'curl-8.5.0-1.amzn2023.0.4', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'curl-debuginfo-8.5.0-1.amzn2023.0.4', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'curl-debuginfo-8.5.0-1.amzn2023.0.4', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'curl-debugsource-8.5.0-1.amzn2023.0.4', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'curl-debugsource-8.5.0-1.amzn2023.0.4', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'curl-minimal-8.5.0-1.amzn2023.0.4', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'curl-minimal-8.5.0-1.amzn2023.0.4', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'curl-minimal-debuginfo-8.5.0-1.amzn2023.0.4', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'curl-minimal-debuginfo-8.5.0-1.amzn2023.0.4', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-8.5.0-1.amzn2023.0.4', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-8.5.0-1.amzn2023.0.4', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-debuginfo-8.5.0-1.amzn2023.0.4', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-debuginfo-8.5.0-1.amzn2023.0.4', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-devel-8.5.0-1.amzn2023.0.4', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-devel-8.5.0-1.amzn2023.0.4', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-minimal-8.5.0-1.amzn2023.0.4', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-minimal-8.5.0-1.amzn2023.0.4', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-minimal-debuginfo-8.5.0-1.amzn2023.0.4', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-minimal-debuginfo-8.5.0-1.amzn2023.0.4', 'cpu':'x86_64', 'release':'AL-2023', '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_WARNING,
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, "curl / curl-debuginfo / curl-debugsource / etc");
}
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
AI Score
Confidence
Low
EPSS
Percentile
17.6%