Test ID:	1.3.6.1.4.1.25623.1.0.892647
Category:	Debian Local Security Checks
Title:	Debian: Security Advisory (DLA-2647-1)
Summary:	The remote host is missing an update for the Debian 'bind9' package(s) announced via the DLA-2647-1 advisory.
Description:	Summary: The remote host is missing an update for the Debian 'bind9' package(s) announced via the DLA-2647-1 advisory. Vulnerability Insight: 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] Affected Software/OS: 'bind9' package(s) on Debian 9. Solution: Please install the updated package(s). CVSS Score: 6.8 CVSS Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2021-25214 https://kb.isc.org/v1/docs/cve-2021-25214 Debian Security Information: DSA-4909 (Google Search) https://www.debian.org/security/2021/dsa-4909 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZDSRPCJQ7MZC6CENH5PO3VQOFI7VSWBE/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VEC2XG4Q2ODTN2C4CGXEIXU3EUTBMK7L/ https://lists.debian.org/debian-lts-announce/2021/05/msg00001.html http://www.openwall.com/lists/oss-security/2021/04/29/1 http://www.openwall.com/lists/oss-security/2021/04/29/2 http://www.openwall.com/lists/oss-security/2021/04/29/3 http://www.openwall.com/lists/oss-security/2021/04/29/4 Common Vulnerability Exposure (CVE) ID: CVE-2021-25215 https://kb.isc.org/v1/docs/cve-2021-25215 https://security.netapp.com/advisory/ntap-20210521-0006/ https://www.oracle.com/security-alerts/cpuoct2021.html Common Vulnerability Exposure (CVE) ID: CVE-2021-25216 https://www.zerodayinitiative.com/advisories/ZDI-21-657/
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