Test ID:	1.3.6.1.4.1.25623.1.1.2.2024.1032
Category:	Huawei EulerOS Local Security Checks
Title:	Huawei EulerOS: Security Advisory for dhcp (EulerOS-SA-2024-1032)
Summary:	The remote host is missing an update for the Huawei EulerOS 'dhcp' package(s) announced via the EulerOS-SA-2024-1032 advisory.
Description:	Summary: The remote host is missing an update for the Huawei EulerOS 'dhcp' package(s) announced via the EulerOS-SA-2024-1032 advisory. Vulnerability Insight: Every `named` instance configured to run as a recursive resolver maintains a cache database holding the responses to the queries it has recently sent to authoritative servers. The size limit for that cache database can be configured using the `max-cache-size` statement in the configuration file, it defaults to 90% of the total amount of memory available on the host. When the size of the cache reaches 7/8 of the configured limit, a cache-cleaning algorithm starts to remove expired and/or least-recently used RRsets from the cache, to keep memory use below the configured limit.It has been discovered that the effectiveness of the cache-cleaning algorithm used in `named` can be severely diminished by querying the resolver for specific RRsets in a certain order, effectively allowing the configured `max-cache-size` limit to be significantly exceeded.(CVE-2023-2828) Affected Software/OS: 'dhcp' package(s) on Huawei EulerOS Virtualization release 2.9.1. Solution: Please install the updated package(s). CVSS Score: 7.8 CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2023-2828 Debian Security Information: DSA-5439 (Google Search) https://www.debian.org/security/2023/dsa-5439 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SEFCEVCTYEMKTWA7V7EYPI5YQQ4JWDLI/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U3K6AJK7RRSR53HRF5GGKPA6PDUDWOD2/ CVE-2023-2828 https://kb.isc.org/docs/cve-2023-2828 https://lists.debian.org/debian-lts-announce/2023/07/msg00021.html http://www.openwall.com/lists/oss-security/2023/06/21/6
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