6.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
29.7%
Roman Fiedler discovered a vulnerability in the OverlayFS code in firejail, a sandbox program to restrict the running environment of untrusted applications, which could result in root privilege escalation. This update disables OverlayFS support in firejail.
For Debian 9 stretch, this problem has been fixed in version 0.9.44.8-2+deb9u2.
We recommend that you upgrade your firejail packages.
For the detailed security status of firejail please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/firejail
NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-2554-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('compat.inc');
if (description)
{
script_id(146466);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/22");
script_cve_id("CVE-2021-26910");
script_name(english:"Debian DLA-2554-1 : firejail security update");
script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security update.");
script_set_attribute(attribute:"description", value:
"Roman Fiedler discovered a vulnerability in the OverlayFS code in
firejail, a sandbox program to restrict the running environment of
untrusted applications, which could result in root privilege
escalation. This update disables OverlayFS support in firejail.
For Debian 9 stretch, this problem has been fixed in version
0.9.44.8-2+deb9u2.
We recommend that you upgrade your firejail packages.
For the detailed security status of firejail please refer to its
security tracker page at:
https://security-tracker.debian.org/tracker/firejail
NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA security advisory. Tenable has attempted
to automatically clean and format it as much as possible without
introducing additional issues.");
script_set_attribute(attribute:"see_also", value:"https://lists.debian.org/debian-lts-announce/2021/02/msg00015.html");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/stretch/firejail");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/firejail");
script_set_attribute(attribute:"solution", value:
"Upgrade the affected firejail package.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:M/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:L/AC:H/PR:L/UI:N/S:U/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-2021-26910");
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:"2021/02/08");
script_set_attribute(attribute:"patch_publication_date", value:"2021/02/11");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/02/12");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:firejail");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Debian Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");
exit(0);
}
include("audit.inc");
include("debian_package.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);
flag = 0;
if (deb_check(release:"9.0", prefix:"firejail", reference:"0.9.44.8-2+deb9u2")) flag++;
if (flag)
{
if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
else security_warning(0);
exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
Vendor | Product | Version | CPE |
---|---|---|---|
debian | debian_linux | firejail | p-cpe:/a:debian:debian_linux:firejail |
debian | debian_linux | 9.0 | cpe:/o:debian:debian_linux:9.0 |
6.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
29.7%