Multiple vulnerabilities have been discovered in ldb, a LDAP-like embedded database built on top of TDB.
CVE-2020-10730 Andrew Bartlett discovered a NULL pointer dereference and use-after-free flaw when handling ‘ASQ’ and ‘VLV’ LDAP controls and combinations with the LDAP paged_results feature.
CVE-2020-27840 Douglas Bagnall discovered a heap corruption flaw via crafted DN strings.
CVE-2021-20277 Douglas Bagnall discovered an out-of-bounds read vulnerability in handling LDAP attributes that contains multiple consecutive leading spaces.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DSA-4884. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include("compat.inc");
if (description)
{
script_id(148314);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/12");
script_cve_id("CVE-2020-10730", "CVE-2020-27840", "CVE-2021-20277");
script_xref(name:"DSA", value:"4884");
script_name(english:"Debian DSA-4884-1 : ldb - security update");
script_summary(english:"Checks dpkg output for the updated package");
script_set_attribute(
attribute:"synopsis",
value:"The remote Debian host is missing a security-related update."
);
script_set_attribute(
attribute:"description",
value:
"Multiple vulnerabilities have been discovered in ldb, a LDAP-like
embedded database built on top of TDB.
- CVE-2020-10730
Andrew Bartlett discovered a NULL pointer dereference
and use-after-free flaw when handling 'ASQ' and 'VLV'
LDAP controls and combinations with the LDAP
paged_results feature.
- CVE-2020-27840
Douglas Bagnall discovered a heap corruption flaw via
crafted DN strings.
- CVE-2021-20277
Douglas Bagnall discovered an out-of-bounds read
vulnerability in handling LDAP attributes that contains
multiple consecutive leading spaces."
);
script_set_attribute(
attribute:"see_also",
value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=985935"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=985936"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2020-10730"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2020-27840"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2021-20277"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/source-package/ldb"
);
script_set_attribute(
attribute:"see_also",
value:"https://packages.debian.org/source/buster/ldb"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.debian.org/security/2021/dsa-4884"
);
script_set_attribute(
attribute:"solution",
value:
"Upgrade the ldb packages.
For the stable distribution (buster), these problems have been fixed
in version 2:1.5.1+really1.4.6-3+deb10u1."
);
script_set_cvss_base_vector("CVSS2#AV:N/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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-20277");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ldb");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/07/07");
script_set_attribute(attribute:"patch_publication_date", value:"2021/04/02");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/04/05");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"Debian Local Security Checks");
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:"ldb-tools", reference:"2:1.5.1+really1.4.6-3+deb10u1")) flag++;
if (deb_check(release:"10.0", prefix:"libldb-dev", reference:"2:1.5.1+really1.4.6-3+deb10u1")) flag++;
if (deb_check(release:"10.0", prefix:"libldb1", reference:"2:1.5.1+really1.4.6-3+deb10u1")) flag++;
if (deb_check(release:"10.0", prefix:"python-ldb", reference:"2:1.5.1+really1.4.6-3+deb10u1")) flag++;
if (deb_check(release:"10.0", prefix:"python-ldb-dev", reference:"2:1.5.1+really1.4.6-3+deb10u1")) 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 | ldb | p-cpe:/a:debian:debian_linux:ldb |
debian | debian_linux | 10.0 | cpe:/o:debian:debian_linux:10.0 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10730
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27840
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20277
bugs.debian.org/cgi-bin/bugreport.cgi?bug=985935
bugs.debian.org/cgi-bin/bugreport.cgi?bug=985936
packages.debian.org/source/buster/ldb
security-tracker.debian.org/tracker/CVE-2020-10730
security-tracker.debian.org/tracker/CVE-2020-27840
security-tracker.debian.org/tracker/CVE-2021-20277
security-tracker.debian.org/tracker/source-package/ldb
www.debian.org/security/2021/dsa-4884