6.4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:N/A:P
9.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
9.2 High
AI Score
Confidence
High
0.005 Low
EPSS
Percentile
75.7%
An issue has been found in libbsd, a library with utility functions from BSD systems. A non-NUL terminated symbol name in the string table might result in an out-of-bounds read.
For Debian 9 stretch, this problem has been fixed in version 0.8.3-1+deb9u1.
We recommend that you upgrade your libbsd packages.
For the detailed security status of libbsd please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/libbsd
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-2566-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('compat.inc');
if (description)
{
script_id(146608);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/22");
script_cve_id("CVE-2019-20367");
script_name(english:"Debian DLA-2566-1 : libbsd security update");
script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security update.");
script_set_attribute(attribute:"description", value:
"An issue has been found in libbsd, a library with utility functions
from BSD systems. A non-NUL terminated symbol name in the string table
might result in an out-of-bounds read.
For Debian 9 stretch, this problem has been fixed in version
0.8.3-1+deb9u1.
We recommend that you upgrade your libbsd packages.
For the detailed security status of libbsd please refer to its
security tracker page at:
https://security-tracker.debian.org/tracker/libbsd
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/msg00027.html");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/stretch/libbsd");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/libbsd");
script_set_attribute(attribute:"solution", value:
"Upgrade the affected libbsd-dev, libbsd0, and libbsd0-udeb packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:P");
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:H/I:N/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-2019-20367");
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:"2020/01/08");
script_set_attribute(attribute:"patch_publication_date", value:"2021/02/18");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/02/19");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libbsd-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libbsd0");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libbsd0-udeb");
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:"libbsd-dev", reference:"0.8.3-1+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"libbsd0", reference:"0.8.3-1+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"libbsd0-udeb", reference:"0.8.3-1+deb9u1")) 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 | libbsd-dev | p-cpe:/a:debian:debian_linux:libbsd-dev |
debian | debian_linux | libbsd0 | p-cpe:/a:debian:debian_linux:libbsd0 |
debian | debian_linux | libbsd0-udeb | p-cpe:/a:debian:debian_linux:libbsd0-udeb |
debian | debian_linux | 9.0 | cpe:/o:debian:debian_linux:9.0 |
6.4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:N/A:P
9.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
9.2 High
AI Score
Confidence
High
0.005 Low
EPSS
Percentile
75.7%