2.1 Low
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:N/A:P
2.8 Low
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
3.6 Low
AI Score
Confidence
High
0.0005 Low
EPSS
Percentile
17.1%
Various memory and file descriptor leaks were discovered in the Python interface to the APT package management runtime library, which could result in denial of service.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DSA-4809. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('compat.inc');
if (description)
{
script_id(144041);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/02");
script_cve_id("CVE-2020-27351");
script_xref(name:"DSA", value:"4809");
script_name(english:"Debian DSA-4809-1 : python-apt - security update");
script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
script_set_attribute(attribute:"description", value:
"Various memory and file descriptor leaks were discovered in the Python
interface to the APT package management runtime library, which could
result in denial of service.");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/python-apt");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/buster/python-apt");
script_set_attribute(attribute:"see_also", value:"https://www.debian.org/security/2020/dsa-4809");
script_set_attribute(attribute:"solution", value:
"Upgrade the python-apt packages.
For the stable distribution (buster), this problem has been fixed in
version 1.8.4.2.");
script_set_cvss_base_vector("CVSS2#AV:L/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:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-27351");
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:"2020/12/10");
script_set_attribute(attribute:"patch_publication_date", value:"2020/12/09");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/12/10");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-apt");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
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) 2020-2024 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:"10.0", prefix:"python-apt", reference:"1.8.4.2")) flag++;
if (deb_check(release:"10.0", prefix:"python-apt-common", reference:"1.8.4.2")) flag++;
if (deb_check(release:"10.0", prefix:"python-apt-dbg", reference:"1.8.4.2")) flag++;
if (deb_check(release:"10.0", prefix:"python-apt-dev", reference:"1.8.4.2")) flag++;
if (deb_check(release:"10.0", prefix:"python-apt-doc", reference:"1.8.4.2")) flag++;
if (deb_check(release:"10.0", prefix:"python3-apt", reference:"1.8.4.2")) flag++;
if (deb_check(release:"10.0", prefix:"python3-apt-dbg", reference:"1.8.4.2")) flag++;
if (flag)
{
if (report_verbosity > 0) security_note(port:0, extra:deb_report_get());
else security_note(0);
exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
Vendor | Product | Version | CPE |
---|---|---|---|
debian | debian_linux | python-apt | p-cpe:/a:debian:debian_linux:python-apt |
debian | debian_linux | 10.0 | cpe:/o:debian:debian_linux:10.0 |
2.1 Low
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:N/A:P
2.8 Low
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
3.6 Low
AI Score
Confidence
High
0.0005 Low
EPSS
Percentile
17.1%