9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
AI Score
Confidence
High
6.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
0.388 Low
EPSS
Percentile
97.2%
The remote host is missing an update for the Debian
# SPDX-FileCopyrightText: 2021 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.892647");
script_cve_id("CVE-2021-25214", "CVE-2021-25215", "CVE-2021-25216");
script_tag(name:"creation_date", value:"2021-05-05 03:00:13 +0000 (Wed, 05 May 2021)");
script_version("2024-02-02T05:06:07+0000");
script_tag(name:"last_modification", value:"2024-02-02 05:06:07 +0000 (Fri, 02 Feb 2024)");
script_tag(name:"cvss_base", value:"6.8");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:P");
script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2021-05-12 17:09:05 +0000 (Wed, 12 May 2021)");
script_name("Debian: Security Advisory (DLA-2647-1)");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2021 Greenbone AG");
script_family("Debian Local Security Checks");
script_dependencies("gather-package-list.nasl");
script_mandatory_keys("ssh/login/debian_linux", "ssh/login/packages", re:"ssh/login/release=DEB9");
script_xref(name:"Advisory-ID", value:"DLA-2647-1");
script_xref(name:"URL", value:"https://www.debian.org/lts/security/2021/DLA-2647-1");
script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/bind9");
script_xref(name:"URL", value:"https://wiki.debian.org/LTS");
script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'bind9' package(s) announced via the DLA-2647-1 advisory.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");
script_tag(name:"insight", value:"Several vulnerabilities were discovered in BIND, a DNS server implementation.
CVE-2021-25214
Greg Kuechle discovered that a malformed incoming IXFR transfer could trigger an assertion failure in named, resulting in denial of service.
CVE-2021-25215
Siva Kakarla discovered that named could crash when a DNAME record placed in the ANSWER section during DNAME chasing turned out to be the final answer to a client query.
CVE-2021-25216
It was discovered that the SPNEGO implementation used by BIND is prone to a buffer overflow vulnerability. This update switches to use the SPNEGO implementation from the Kerberos libraries.
For Debian 9 stretch, these problems have been fixed in version 1:9.10.3.dfsg.P4-12.3+deb9u9.
We recommend that you upgrade your bind9 packages.
For the detailed security status of bind9 please refer to its security tracker page at: [link moved to references]
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: [link moved to references]");
script_tag(name:"affected", value:"'bind9' package(s) on Debian 9.");
script_tag(name:"solution", value:"Please install the updated package(s).");
script_tag(name:"solution_type", value:"VendorFix");
script_tag(name:"qod_type", value:"package");
exit(0);
}
include("revisions-lib.inc");
include("pkg-lib-deb.inc");
release = dpkg_get_ssh_release();
if(!release)
exit(0);
res = "";
report = "";
if(release == "DEB9") {
if(!isnull(res = isdpkgvuln(pkg:"bind9", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"bind9-doc", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"bind9-host", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"bind9utils", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"dnsutils", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"host", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libbind-dev", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libbind-export-dev", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libbind9-140", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libdns-export162", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libdns-export162-udeb", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libdns162", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libirs-export141", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libirs-export141-udeb", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libirs141", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libisc-export160", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libisc-export160-udeb", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libisc160", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libisccc-export140", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libisccc-export140-udeb", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libisccc140", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libisccfg-export140", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libisccfg-export140-udeb", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libisccfg140", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"liblwres141", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"lwresd", ver:"1:9.10.3.dfsg.P4-12.3+deb9u9", rls:"DEB9"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
exit(0);
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
AI Score
Confidence
High
6.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
0.388 Low
EPSS
Percentile
97.2%