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Debian DLA-2647-1 : bind9 security update
critical Nessus Plugin ID 149262
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Synopsis
The remote Debian host is missing a security update.Description
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: https://security-tracker.debian.org/tracker/bind9
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.
Solution
Upgrade the affected packages.See Also
https://lists.debian.org/debian-lts-announce/2021/05/msg00001.html
https://packages.debian.org/source/stretch/bind9
https://security-tracker.debian.org/tracker/source-package/bind9
Plugin Details
Severity: Critical
ID: 149262
File Name: debian_DLA-2647.nasl
Version: 1.4
Type: local
Agent: unix
Family: Debian Local Security Checks
Published: 5/5/2021
Updated: 5/14/2021
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: Medium
Base Score: 6.8
Temporal Score: 5
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2021-25216
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 8.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:debian:debian_linux:libisc-export160, p-cpe:/a:debian:debian_linux:libisccfg-export140-udeb, cpe:/o:debian:debian_linux:9.0, p-cpe:/a:debian:debian_linux:bind9-doc, p-cpe:/a:debian:debian_linux:libirs-export141, p-cpe:/a:debian:debian_linux:libisc160, p-cpe:/a:debian:debian_linux:libisc-export160-udeb, p-cpe:/a:debian:debian_linux:libirs141, p-cpe:/a:debian:debian_linux:libdns-export162-udeb, p-cpe:/a:debian:debian_linux:libisccc-export140, p-cpe:/a:debian:debian_linux:libdns-export162, p-cpe:/a:debian:debian_linux:libbind-dev, p-cpe:/a:debian:debian_linux:libbind-export-dev, p-cpe:/a:debian:debian_linux:libisccfg140, p-cpe:/a:debian:debian_linux:host, p-cpe:/a:debian:debian_linux:libisccc140, p-cpe:/a:debian:debian_linux:libbind9-140, p-cpe:/a:debian:debian_linux:dnsutils, p-cpe:/a:debian:debian_linux:bind9-host, p-cpe:/a:debian:debian_linux:libirs-export141-udeb, p-cpe:/a:debian:debian_linux:liblwres141, p-cpe:/a:debian:debian_linux:libdns162, p-cpe:/a:debian:debian_linux:lwresd, p-cpe:/a:debian:debian_linux:bind9utils, p-cpe:/a:debian:debian_linux:libisccfg-export140, p-cpe:/a:debian:debian_linux:bind9, p-cpe:/a:debian:debian_linux:libisccc-export140-udeb
Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l
Exploit Ease: No known exploits are available
Patch Publication Date: 5/4/2021
Vulnerability Publication Date: 4/29/2021