Test ID:	1.3.6.1.4.1.25623.1.0.892910
Category:	Debian Local Security Checks
Title:	Debian: Security Advisory (DLA-2910-1)
Summary:	The remote host is missing an update for the Debian 'ldns' package(s) announced via the DLA-2910-1 advisory.
Description:	Summary: The remote host is missing an update for the Debian 'ldns' package(s) announced via the DLA-2910-1 advisory. Vulnerability Insight: It was discovered that there were four issues in ldns, a library used in Domain Name System (DNS) related programs: CVE-2020-19860 When ldns version 1.7.1 verifies a zone file, the ldns_rr_new_frm_str_internal function has a heap out of bounds read vulnerability. An attacker can leak information on the heap by constructing a zone file payload. CVE-2020-19861 When a zone file in ldns 1.7.1 is parsed, the function ldns_nsec3_salt_data is too trusted for the length value obtained from the zone file. When the memcpy is copied, the 0xfe - ldns_rdf_size(salt_rdf) byte data can be copied, causing heap overflow information leakage. CVE-2017-1000231 A double-free vulnerability in parse.c in ldns 1.7.0 have unspecified impact and attack vectors. CVE-2017-1000232 A double-free vulnerability in str2host.c in ldns 1.7.0 have unspecified impact and attack vectors. For Debian 9 Stretch, these four problems have been fixed in version 1.7.0-1+deb9u1. We recommend that you upgrade your ldns packages. 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: 'ldns' package(s) on Debian 9. Solution: Please install the updated package(s). CVSS Score: 7.5 CVSS Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2017-1000231 https://www.nlnetlabs.nl/bugs-script/show_bug.cgi?id=1256 https://lists.debian.org/debian-lts-announce/2017/11/msg00028.html SuSE Security Announcement: openSUSE-SU-2020:0438 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00000.html Common Vulnerability Exposure (CVE) ID: CVE-2017-1000232 https://www.nlnetlabs.nl/bugs-script/show_bug.cgi?id=1257 Common Vulnerability Exposure (CVE) ID: CVE-2020-19860 https://github.com/NLnetLabs/ldns/commit/15d96206996bea969fbc918eb0a4a346f514b9f3 https://github.com/NLnetLabs/ldns/issues/50 Common Vulnerability Exposure (CVE) ID: CVE-2020-19861 https://cwe.mitre.org/data/definitions/126.html https://github.com/NLnetLabs/ldns/issues/51
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