7.2 High
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
8.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
0.002 Low
EPSS
Percentile
58.9%
The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3336-1 advisory.
runc before 1.0.0-rc95 allows a Container Filesystem Breakout via Directory Traversal. To exploit the vulnerability, an attacker must be able to create multiple containers with a fairly specific mount configuration. The problem occurs via a symlink-exchange attack that relies on a race condition.
(CVE-2021-30465)
containerd is a container runtime. A bug was found in containerd versions prior to 1.4.8 and 1.5.4 where pulling and extracting a specially-crafted container image can result in Unix file permission changes for existing files in the host’s filesystem. Changes to file permissions can deny access to the expected owner of the file, widen access to others, or set extended bits like setuid, setgid, and sticky. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process. This bug has been fixed in containerd 1.5.4 and 1.4.8. As a workaround, ensure that users only pull images from trusted sources. Linux security modules (LSMs) like SELinux and AppArmor can limit the files potentially affected by this bug through policies and profiles that prevent containerd from interacting with specific files. (CVE-2021-32760)
Moby is an open-source project created by Docker to enable software containerization. A bug was found in Moby (Docker Engine) where attempting to copy files using docker cp
into a specially-crafted container can result in Unix file permission changes for existing files in the host’s filesystem, widening access to others. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process. This bug has been fixed in Moby (Docker Engine) 20.10.9. Users should update to this version as soon as possible. Running containers do not need to be restarted. (CVE-2021-41089)
Moby is an open-source project created by Docker to enable software containerization. A bug was found in Moby (Docker Engine) where the data directory (typically /var/lib/docker
) contained subdirectories with insufficiently restricted permissions, allowing otherwise unprivileged Linux users to traverse directory contents and execute programs. When containers included executable programs with extended permission bits (such as setuid
), unprivileged Linux users could discover and execute those programs. When the UID of an unprivileged Linux user on the host collided with the file owner or group inside a container, the unprivileged Linux user on the host could discover, read, and modify those files. This bug has been fixed in Moby (Docker Engine) 20.10.9. Users should update to this version as soon as possible. Running containers should be stopped and restarted for the permissions to be fixed. For users unable to upgrade limit access to the host to trusted users. Limit access to host volumes to trusted containers.
(CVE-2021-41091)
Docker CLI is the command line interface for the docker container runtime. A bug was found in the Docker CLI where running docker login my-private-registry.example.com
with a misconfigured configuration file (typically ~/.docker/config.json
) listing a credsStore
or credHelpers
that could not be executed would result in any provided credentials being sent to registry-1.docker.io
rather than the intended private registry. This bug has been fixed in Docker CLI 20.10.9. Users should update to this version as soon as possible. For users unable to update ensure that any configured credsStore or credHelpers entries in the configuration file reference an installed credential helper that is executable and on the PATH.
(CVE-2021-41092)
containerd is an open source container runtime with an emphasis on simplicity, robustness and portability.
A bug was found in containerd where container root directories and some plugins had insufficiently restricted permissions, allowing otherwise unprivileged Linux users to traverse directory contents and execute programs. When containers included executable programs with extended permission bits (such as setuid), unprivileged Linux users could discover and execute those programs. When the UID of an unprivileged Linux user on the host collided with the file owner or group inside a container, the unprivileged Linux user on the host could discover, read, and modify those files. This vulnerability has been fixed in containerd 1.4.11 and containerd 1.5.7. Users should update to these version when they are released and may restart containers or update directory permissions to mitigate the vulnerability. Users unable to update should limit access to the host to trusted users. Update directory permission on container bundles directories. (CVE-2021-41103)
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 70300
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# SUSE update advisory SUSE-SU-2021:3336-1. The text itself
# is copyright (C) SUSE.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(154100);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/13");
script_cve_id(
"CVE-2021-30465",
"CVE-2021-32760",
"CVE-2021-41089",
"CVE-2021-41091",
"CVE-2021-41092",
"CVE-2021-41103"
);
script_xref(name:"SuSE", value:"SUSE-SU-2021:3336-1");
script_name(english:"SUSE SLES12 Security Update : containerd, docker, runc (SUSE-SU-2021:3336-1)");
script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in
the SUSE-SU-2021:3336-1 advisory.
- runc before 1.0.0-rc95 allows a Container Filesystem Breakout via Directory Traversal. To exploit the
vulnerability, an attacker must be able to create multiple containers with a fairly specific mount
configuration. The problem occurs via a symlink-exchange attack that relies on a race condition.
(CVE-2021-30465)
- containerd is a container runtime. A bug was found in containerd versions prior to 1.4.8 and 1.5.4 where
pulling and extracting a specially-crafted container image can result in Unix file permission changes for
existing files in the host's filesystem. Changes to file permissions can deny access to the expected owner
of the file, widen access to others, or set extended bits like setuid, setgid, and sticky. This bug does
not directly allow files to be read, modified, or executed without an additional cooperating process. This
bug has been fixed in containerd 1.5.4 and 1.4.8. As a workaround, ensure that users only pull images from
trusted sources. Linux security modules (LSMs) like SELinux and AppArmor can limit the files potentially
affected by this bug through policies and profiles that prevent containerd from interacting with specific
files. (CVE-2021-32760)
- Moby is an open-source project created by Docker to enable software containerization. A bug was found in
Moby (Docker Engine) where attempting to copy files using `docker cp` into a specially-crafted container
can result in Unix file permission changes for existing files in the host's filesystem, widening access to
others. This bug does not directly allow files to be read, modified, or executed without an additional
cooperating process. This bug has been fixed in Moby (Docker Engine) 20.10.9. Users should update to this
version as soon as possible. Running containers do not need to be restarted. (CVE-2021-41089)
- Moby is an open-source project created by Docker to enable software containerization. A bug was found in
Moby (Docker Engine) where the data directory (typically `/var/lib/docker`) contained subdirectories with
insufficiently restricted permissions, allowing otherwise unprivileged Linux users to traverse directory
contents and execute programs. When containers included executable programs with extended permission bits
(such as `setuid`), unprivileged Linux users could discover and execute those programs. When the UID of an
unprivileged Linux user on the host collided with the file owner or group inside a container, the
unprivileged Linux user on the host could discover, read, and modify those files. This bug has been fixed
in Moby (Docker Engine) 20.10.9. Users should update to this version as soon as possible. Running
containers should be stopped and restarted for the permissions to be fixed. For users unable to upgrade
limit access to the host to trusted users. Limit access to host volumes to trusted containers.
(CVE-2021-41091)
- Docker CLI is the command line interface for the docker container runtime. A bug was found in the Docker
CLI where running `docker login my-private-registry.example.com` with a misconfigured configuration file
(typically `~/.docker/config.json`) listing a `credsStore` or `credHelpers` that could not be executed
would result in any provided credentials being sent to `registry-1.docker.io` rather than the intended
private registry. This bug has been fixed in Docker CLI 20.10.9. Users should update to this version as
soon as possible. For users unable to update ensure that any configured credsStore or credHelpers entries
in the configuration file reference an installed credential helper that is executable and on the PATH.
(CVE-2021-41092)
- containerd is an open source container runtime with an emphasis on simplicity, robustness and portability.
A bug was found in containerd where container root directories and some plugins had insufficiently
restricted permissions, allowing otherwise unprivileged Linux users to traverse directory contents and
execute programs. When containers included executable programs with extended permission bits (such as
setuid), unprivileged Linux users could discover and execute those programs. When the UID of an
unprivileged Linux user on the host collided with the file owner or group inside a container, the
unprivileged Linux user on the host could discover, read, and modify those files. This vulnerability has
been fixed in containerd 1.4.11 and containerd 1.5.7. Users should update to these version when they are
released and may restart containers or update directory permissions to mitigate the vulnerability. Users
unable to update should limit access to the host to trusted users. Update directory permission on
container bundles directories. (CVE-2021-41103)
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://bugzilla.suse.com/1102408");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1185405");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1187704");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188282");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1191015");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1191121");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1191334");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1191355");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1191434");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-30465");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-32760");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-41089");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-41091");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-41092");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-41103");
# https://lists.suse.com/pipermail/sle-security-updates/2021-October/009566.html
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?766b520d");
script_set_attribute(attribute:"solution", value:
"Update the affected containerd, docker and / or runc packages.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-41103");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2021-30465");
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:"2021/05/14");
script_set_attribute(attribute:"patch_publication_date", value:"2021/10/12");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/10/13");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:containerd");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:docker");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:runc");
script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"SuSE Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");
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/SuSE/release");
if (isnull(os_release) || os_release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
var os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'SUSE');
os_ver = os_ver[1];
if (! preg(pattern:"^(SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLES12', 'SUSE (' + os_ver + ')');
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'SUSE (' + os_ver + ')', cpu);
var service_pack = get_kb_item("Host/SuSE/patchlevel");
if (isnull(service_pack)) service_pack = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(0|3|4|5)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES12 SP0/3/4/5", os_ver + " SP" + service_pack);
var pkgs = [
{'reference':'containerd-1.4.11-16.45.1', 'sp':'0', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-containers-release-12-0']},
{'reference':'containerd-1.4.11-16.45.1', 'sp':'3', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-containers-release-12-0']},
{'reference':'containerd-1.4.11-16.45.1', 'sp':'4', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-containers-release-12-0']},
{'reference':'containerd-1.4.11-16.45.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-containers-release-12-0']},
{'reference':'docker-20.10.9_ce-98.72.1', 'sp':'0', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-containers-release-12-0']},
{'reference':'docker-20.10.9_ce-98.72.1', 'sp':'3', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-containers-release-12-0']},
{'reference':'docker-20.10.9_ce-98.72.1', 'sp':'4', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-containers-release-12-0']},
{'reference':'docker-20.10.9_ce-98.72.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-containers-release-12-0']},
{'reference':'runc-1.0.2-16.14.1', 'sp':'0', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-containers-release-12-0']},
{'reference':'runc-1.0.2-16.14.1', 'sp':'3', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-containers-release-12-0']},
{'reference':'runc-1.0.2-16.14.1', 'sp':'4', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-containers-release-12-0']},
{'reference':'runc-1.0.2-16.14.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-containers-release-12-0']}
];
var ltss_caveat_required = FALSE;
var flag = 0;
foreach var package_array ( pkgs ) {
var reference = NULL;
var _release = NULL;
var sp = NULL;
var _cpu = NULL;
var exists_check = NULL;
var rpm_spec_vers_cmp = 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['exists_check'])) exists_check = package_array['exists_check'];
if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
if (reference && _release) {
if (exists_check) {
var check_flag = 0;
foreach var check (exists_check) {
if (!rpm_exists(release:_release, rpm:check)) continue;
check_flag++;
}
if (!check_flag) continue;
}
if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) 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, 'containerd / docker / runc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
novell | suse_linux | containerd | p-cpe:/a:novell:suse_linux:containerd |
novell | suse_linux | docker | p-cpe:/a:novell:suse_linux:docker |
novell | suse_linux | runc | p-cpe:/a:novell:suse_linux:runc |
novell | suse_linux | 12 | cpe:/o:novell:suse_linux:12 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30465
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32760
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41089
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41091
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41092
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41103
www.nessus.org/u?766b520d
bugzilla.suse.com/1102408
bugzilla.suse.com/1185405
bugzilla.suse.com/1187704
bugzilla.suse.com/1188282
bugzilla.suse.com/1191015
bugzilla.suse.com/1191121
bugzilla.suse.com/1191334
bugzilla.suse.com/1191355
bugzilla.suse.com/1191434
www.suse.com/security/cve/CVE-2021-30465
www.suse.com/security/cve/CVE-2021-32760
www.suse.com/security/cve/CVE-2021-41089
www.suse.com/security/cve/CVE-2021-41091
www.suse.com/security/cve/CVE-2021-41092
www.suse.com/security/cve/CVE-2021-41103
7.2 High
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
8.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
0.002 Low
EPSS
Percentile
58.9%