CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
AI Score
Confidence
Low
EPSS
Percentile
49.7%
The remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2024:1601 advisory.
An information disclosure vulnerability exists in curl <v8.1.0 when doing HTTP(S) transfers, libcurl might erroneously use the read callback (CURLOPT_READFUNCTION
) to ask for data to send, even when the CURLOPT_POSTFIELDS
option has been set, if the same handle previously wasused to issue a PUT
request which used that callback. This flaw may surprise the application and cause it to misbehave and either send off the wrong data or use memory after free or similar in the second transfer. The problem exists in the logic for a reused handle when it is (expected to be) changed from a PUT to a POST. (CVE-2023-28322)
This flaw allows an attacker to insert cookies at will into a running program using libcurl, if the specific series of conditions are met. libcurl performs transfers. In its API, an application creates easy handles that are the individual handles for single transfers. libcurl provides a function call that duplicates en easy handle called curl_easy_duphandle. If a transfer has cookies enabled when the handle is duplicated, the cookie-enable state is also cloned - but without cloning the actual cookies. If the source handle did not read any cookies from a specific file on disk, the cloned version of the handle would instead store the file name as none
(using the four ASCII letters, no quotes). Subsequent use of the cloned handle that does not explicitly set a source to load cookies from would then inadvertently load cookies from a file named none
- if such a file exists and is readable in the current directory of the program using libcurl. And if using the correct file format of course.
(CVE-2023-38546)
CVE-2023-38546 is a cookie injection vulnerability in the curl_easy_duphandle(), a function in libcurl that duplicates easy handles. When duplicating an easy handle, if cookies are enabled, the duplicated easy handle will not duplicate the cookies themselves, but would instead set the filename to none.’ Therefore, when the duplicated easy handle is subsequently used, if a source was not set for the cookies, libcurl would attempt to load them from the file named none’ on the disk. This vulnerability is rated low, as the various conditions required for exploitation are unlikely. (CVE-2023-38546)
This flaw allows a malicious HTTP server to set super cookies in curl that are then passed back to more origins than what is otherwise allowed or possible. This allows a site to set cookies that then would get sent to different and unrelated sites and domains. It could do this by exploiting a mixed case flaw in curl’s function that verifies a given cookie domain against the Public Suffix List (PSL). For example a cookie could be set with domain=co.UK
when the URL used a lower case hostname curl.co.uk
, even though co.uk
is listed as a PSL domain. (CVE-2023-46218)
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 package checks in this plugin were extracted from
# Rocky Linux Security Advisory RLSA-2024:1601.
##
include('compat.inc');
if (description)
{
script_id(192956);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/08");
script_cve_id("CVE-2023-28322", "CVE-2023-38546", "CVE-2023-46218");
script_xref(name:"IAVA", value:"2023-A-0259-S");
script_xref(name:"IAVA", value:"2023-A-0531-S");
script_xref(name:"IAVA", value:"2023-A-0674-S");
script_xref(name:"RLSA", value:"2024:1601");
script_xref(name:"CEA-ID", value:"CEA-2023-0052");
script_name(english:"Rocky Linux 8 : curl (RLSA-2024:1601)");
script_set_attribute(attribute:"synopsis", value:
"The remote Rocky Linux host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the
RLSA-2024:1601 advisory.
- An information disclosure vulnerability exists in curl <v8.1.0 when doing HTTP(S) transfers, libcurl might
erroneously use the read callback (`CURLOPT_READFUNCTION`) to ask for data to send, even when the
`CURLOPT_POSTFIELDS` option has been set, if the same handle previously wasused to issue a `PUT` request
which used that callback. This flaw may surprise the application and cause it to misbehave and either send
off the wrong data or use memory after free or similar in the second transfer. The problem exists in the
logic for a reused handle when it is (expected to be) changed from a PUT to a POST. (CVE-2023-28322)
- This flaw allows an attacker to insert cookies at will into a running program using libcurl, if the
specific series of conditions are met. libcurl performs transfers. In its API, an application creates
easy handles that are the individual handles for single transfers. libcurl provides a function call that
duplicates en easy handle called
[curl_easy_duphandle](https://curl.se/libcurl/c/curl_easy_duphandle.html). If a transfer has cookies
enabled when the handle is duplicated, the cookie-enable state is also cloned - but without cloning the
actual cookies. If the source handle did not read any cookies from a specific file on disk, the cloned
version of the handle would instead store the file name as `none` (using the four ASCII letters, no
quotes). Subsequent use of the cloned handle that does not explicitly set a source to load cookies from
would then inadvertently load cookies from a file named `none` - if such a file exists and is readable in
the current directory of the program using libcurl. And if using the correct file format of course.
(CVE-2023-38546)
- CVE-2023-38546 is a cookie injection vulnerability in the curl_easy_duphandle(), a function in libcurl
that duplicates easy handles. When duplicating an easy handle, if cookies are enabled, the duplicated
easy handle will not duplicate the cookies themselves, but would instead set the filename to none.'
Therefore, when the duplicated easy handle is subsequently used, if a source was not set for the cookies,
libcurl would attempt to load them from the file named none' on the disk. This vulnerability is rated
low, as the various conditions required for exploitation are unlikely. (CVE-2023-38546)
- This flaw allows a malicious HTTP server to set super cookies in curl that are then passed back to more
origins than what is otherwise allowed or possible. This allows a site to set cookies that then would get
sent to different and unrelated sites and domains. It could do this by exploiting a mixed case flaw in
curl's function that verifies a given cookie domain against the Public Suffix List (PSL). For example a
cookie could be set with `domain=co.UK` when the URL used a lower case hostname `curl.co.uk`, even though
`co.uk` is listed as a PSL domain. (CVE-2023-46218)
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://errata.rockylinux.org/RLSA-2024:1601");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2196793");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2240033");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2241938");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2252030");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-46218");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2023/05/19");
script_set_attribute(attribute:"patch_publication_date", value:"2024/04/05");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/04/05");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:curl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:curl-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:curl-debugsource");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:libcurl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:libcurl-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:libcurl-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:libcurl-minimal");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:libcurl-minimal-debuginfo");
script_set_attribute(attribute:"cpe", value:"cpe:/o:rocky:linux:8");
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:"Rocky 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/RockyLinux/release", "Host/RockyLinux/rpm-list", "Host/cpu");
exit(0);
}
include('rpm.inc');
if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/RockyLinux/release');
if (isnull(os_release) || 'Rocky Linux' >!< os_release) audit(AUDIT_OS_NOT, 'Rocky Linux');
var os_ver = pregmatch(pattern: "Rocky(?: Linux)? release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Rocky Linux');
os_ver = os_ver[1];
if (! preg(pattern:"^8([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Rocky Linux 8.x', 'Rocky Linux ' + os_ver);
if (!get_kb_item('Host/RockyLinux/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Rocky Linux', cpu);
var pkgs = [
{'reference':'curl-7.61.1-33.el8_9.5', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'curl-7.61.1-33.el8_9.5', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'curl-debuginfo-7.61.1-33.el8_9.5', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'curl-debuginfo-7.61.1-33.el8_9.5', 'cpu':'i686', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'curl-debuginfo-7.61.1-33.el8_9.5', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'curl-debugsource-7.61.1-33.el8_9.5', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'curl-debugsource-7.61.1-33.el8_9.5', 'cpu':'i686', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'curl-debugsource-7.61.1-33.el8_9.5', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-7.61.1-33.el8_9.5', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-7.61.1-33.el8_9.5', 'cpu':'i686', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-7.61.1-33.el8_9.5', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-debuginfo-7.61.1-33.el8_9.5', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-debuginfo-7.61.1-33.el8_9.5', 'cpu':'i686', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-debuginfo-7.61.1-33.el8_9.5', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-devel-7.61.1-33.el8_9.5', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-devel-7.61.1-33.el8_9.5', 'cpu':'i686', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-devel-7.61.1-33.el8_9.5', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-minimal-7.61.1-33.el8_9.5', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-minimal-7.61.1-33.el8_9.5', 'cpu':'i686', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-minimal-7.61.1-33.el8_9.5', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-minimal-debuginfo-7.61.1-33.el8_9.5', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-minimal-debuginfo-7.61.1-33.el8_9.5', 'cpu':'i686', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-minimal-debuginfo-7.61.1-33.el8_9.5', 'cpu':'x86_64', 'release':'8', '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 = 'Rocky-' + 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 / libcurl / etc');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-28322
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-38546
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-46218
bugzilla.redhat.com/show_bug.cgi?id=2196793
bugzilla.redhat.com/show_bug.cgi?id=2240033
bugzilla.redhat.com/show_bug.cgi?id=2241938
bugzilla.redhat.com/show_bug.cgi?id=2252030
errata.rockylinux.org/RLSA-2024:1601
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
AI Score
Confidence
Low
EPSS
Percentile
49.7%