8.6 High
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
6.4 Medium
AI Score
Confidence
Low
0.0004 Low
EPSS
Percentile
10.5%
The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-6718-2 advisory.
Note that Nessus has not tested for this issue 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 Ubuntu Security Notice USN-6718-2. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##
include('compat.inc');
if (description)
{
script_id(192630);
script_version("1.1");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/29");
script_cve_id("CVE-2024-2398");
script_xref(name:"USN", value:"6718-2");
script_xref(name:"IAVA", value:"2024-A-0185");
script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS : curl vulnerability (USN-6718-2)");
script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing a security update.");
script_set_attribute(attribute:"description", value:
"The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by a vulnerability as referenced
in the USN-6718-2 advisory.
- 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 this issue but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/notices/USN-6718-2");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/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:N/UI:N/S:U/C:N/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-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:"2024/03/27");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/03/27");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:curl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurl3");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurl3-gnutls");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurl3-nss");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurl4");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurl4-gnutls-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurl4-nss-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurl4-openssl-dev");
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:"Ubuntu Local Security Checks");
script_copyright(english:"Ubuntu Security Notice (C) 2024 Canonical, Inc. / NASL script (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");
exit(0);
}
include('debian_package.inc');
if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('16.04' >< os_release || '18.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04 / 18.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);
var pkgs = [
{'osver': '16.04', 'pkgname': 'curl', 'pkgver': '7.47.0-1ubuntu2.19+esm12'},
{'osver': '16.04', 'pkgname': 'libcurl3', 'pkgver': '7.47.0-1ubuntu2.19+esm12'},
{'osver': '16.04', 'pkgname': 'libcurl3-gnutls', 'pkgver': '7.47.0-1ubuntu2.19+esm12'},
{'osver': '16.04', 'pkgname': 'libcurl3-nss', 'pkgver': '7.47.0-1ubuntu2.19+esm12'},
{'osver': '16.04', 'pkgname': 'libcurl4-gnutls-dev', 'pkgver': '7.47.0-1ubuntu2.19+esm12'},
{'osver': '16.04', 'pkgname': 'libcurl4-nss-dev', 'pkgver': '7.47.0-1ubuntu2.19+esm12'},
{'osver': '16.04', 'pkgname': 'libcurl4-openssl-dev', 'pkgver': '7.47.0-1ubuntu2.19+esm12'},
{'osver': '18.04', 'pkgname': 'curl', 'pkgver': '7.58.0-2ubuntu3.24+esm4'},
{'osver': '18.04', 'pkgname': 'libcurl3-gnutls', 'pkgver': '7.58.0-2ubuntu3.24+esm4'},
{'osver': '18.04', 'pkgname': 'libcurl3-nss', 'pkgver': '7.58.0-2ubuntu3.24+esm4'},
{'osver': '18.04', 'pkgname': 'libcurl4', 'pkgver': '7.58.0-2ubuntu3.24+esm4'},
{'osver': '18.04', 'pkgname': 'libcurl4-gnutls-dev', 'pkgver': '7.58.0-2ubuntu3.24+esm4'},
{'osver': '18.04', 'pkgname': 'libcurl4-nss-dev', 'pkgver': '7.58.0-2ubuntu3.24+esm4'},
{'osver': '18.04', 'pkgname': 'libcurl4-openssl-dev', 'pkgver': '7.58.0-2ubuntu3.24+esm4'}
];
var flag = 0;
foreach package_array ( pkgs ) {
var osver = NULL;
var pkgname = NULL;
var pkgver = NULL;
if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
if (osver && pkgname && pkgver) {
if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : ubuntu_report_get()
);
exit(0);
}
else
{
var tested = ubuntu_pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'curl / libcurl3 / libcurl3-gnutls / libcurl3-nss / libcurl4 / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
canonical | ubuntu_linux | 16.04 | cpe:/o:canonical:ubuntu_linux:16.04:-:lts |
canonical | ubuntu_linux | 18.04 | cpe:/o:canonical:ubuntu_linux:18.04:-:lts |
canonical | ubuntu_linux | curl | p-cpe:/a:canonical:ubuntu_linux:curl |
canonical | ubuntu_linux | libcurl3 | p-cpe:/a:canonical:ubuntu_linux:libcurl3 |
canonical | ubuntu_linux | libcurl3-gnutls | p-cpe:/a:canonical:ubuntu_linux:libcurl3-gnutls |
canonical | ubuntu_linux | libcurl3-nss | p-cpe:/a:canonical:ubuntu_linux:libcurl3-nss |
canonical | ubuntu_linux | libcurl4 | p-cpe:/a:canonical:ubuntu_linux:libcurl4 |
canonical | ubuntu_linux | libcurl4-gnutls-dev | p-cpe:/a:canonical:ubuntu_linux:libcurl4-gnutls-dev |
canonical | ubuntu_linux | libcurl4-nss-dev | p-cpe:/a:canonical:ubuntu_linux:libcurl4-nss-dev |
canonical | ubuntu_linux | libcurl4-openssl-dev | p-cpe:/a:canonical:ubuntu_linux:libcurl4-openssl-dev |
8.6 High
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
6.4 Medium
AI Score
Confidence
Low
0.0004 Low
EPSS
Percentile
10.5%