Security update for pdns-recursor SUSE Patch security@suse.de SUSE Security Team openSUSE-SU-2020:0698-1 Final 1 1 2020-05-23T07:22:00Z current 2020-05-23T07:22:00Z 2020-05-23T07:22:00Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for pdns-recursor This update for pdns-recursor fixes the following issues: - update to 4.1.16 * fixes an issue where records in the answer section of a NXDOMAIN response lacking an SOA were not properly validated (CVE-2020-12244, boo#1171553) * fixes an issue where invalid hostname on the server can result in disclosure of invalid memory (CVE-2020-10030, boo#1171553) * fixes an issue in the DNS protocol has been found that allows malicious parties to use recursive DNS services to attack third party authoritative name servers (CVE-2020-10995, boo#1171553) For details see https://doc.powerdns.com/recursor/changelog/4.1.html#change-4.1.16 The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). openSUSE-2020-698 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/LEZPG4GM5KFH6L7EPATOSNLDHKRJP667/ E-Mail link for openSUSE-SU-2020:0698-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1171553 SUSE Bug 1171553 https://www.suse.com/security/cve/CVE-2020-10030/ SUSE CVE CVE-2020-10030 page https://www.suse.com/security/cve/CVE-2020-10995/ SUSE CVE CVE-2020-10995 page https://www.suse.com/security/cve/CVE-2020-12244/ SUSE CVE CVE-2020-12244 page SUSE Package Hub 12 SP1 SUSE Package Hub 15 SP1 openSUSE Leap 15.1 pdns-recursor-4.1.12-bp151.4.3.1 pdns-recursor-4.1.12-bp151.4.3.1 as a component of SUSE Package Hub 12 SP1 pdns-recursor-4.1.12-bp151.4.3.1 as a component of SUSE Package Hub 15 SP1 pdns-recursor-4.1.12-bp151.4.3.1 as a component of openSUSE Leap 15.1 An issue has been found in PowerDNS Recursor 4.1.0 up to and including 4.3.0. It allows an attacker (with enough privileges to change the system's hostname) to cause disclosure of uninitialized memory content via a stack-based out-of-bounds read. It only occurs on systems where gethostname() does not have '\0' termination of the returned string if the hostname is larger than the supplied buffer. (Linux systems are not affected because the buffer is always large enough. OpenBSD systems are not affected because the returned hostname always has '\0' termination.) Under some conditions, this issue can lead to the writing of one '\0' byte out-of-bounds on the stack, causing a denial of service or possibly arbitrary code execution. CVE-2020-10030 SUSE Package Hub 12 SP1:pdns-recursor-4.1.12-bp151.4.3.1 SUSE Package Hub 15 SP1:pdns-recursor-4.1.12-bp151.4.3.1 openSUSE Leap 15.1:pdns-recursor-4.1.12-bp151.4.3.1 moderate 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/LEZPG4GM5KFH6L7EPATOSNLDHKRJP667/ https://www.suse.com/security/cve/CVE-2020-10030.html CVE-2020-10030 https://bugzilla.suse.com/1171553 SUSE Bug 1171553 PowerDNS Recursor from 4.1.0 up to and including 4.3.0 does not sufficiently defend against amplification attacks. An issue in the DNS protocol has been found that allow malicious parties to use recursive DNS services to attack third party authoritative name servers. The attack uses a crafted reply by an authoritative name server to amplify the resulting traffic between the recursive and other authoritative name servers. Both types of service can suffer degraded performance as an effect. This is triggered by random subdomains in the NSDNAME in NS records. PowerDNS Recursor 4.1.16, 4.2.2 and 4.3.1 contain a mitigation to limit the impact of this DNS protocol issue. CVE-2020-10995 SUSE Package Hub 12 SP1:pdns-recursor-4.1.12-bp151.4.3.1 SUSE Package Hub 15 SP1:pdns-recursor-4.1.12-bp151.4.3.1 openSUSE Leap 15.1:pdns-recursor-4.1.12-bp151.4.3.1 moderate 5 AV:N/AC:L/Au:N/C:N/I:N/A:P To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/LEZPG4GM5KFH6L7EPATOSNLDHKRJP667/ https://www.suse.com/security/cve/CVE-2020-10995.html CVE-2020-10995 https://bugzilla.suse.com/1171553 SUSE Bug 1171553 An issue has been found in PowerDNS Recursor 4.1.0 through 4.3.0 where records in the answer section of a NXDOMAIN response lacking an SOA were not properly validated in SyncRes::processAnswer, allowing an attacker to bypass DNSSEC validation. CVE-2020-12244 SUSE Package Hub 12 SP1:pdns-recursor-4.1.12-bp151.4.3.1 SUSE Package Hub 15 SP1:pdns-recursor-4.1.12-bp151.4.3.1 openSUSE Leap 15.1:pdns-recursor-4.1.12-bp151.4.3.1 moderate 5 AV:N/AC:L/Au:N/C:P/I:N/A:N To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/LEZPG4GM5KFH6L7EPATOSNLDHKRJP667/ https://www.suse.com/security/cve/CVE-2020-12244.html CVE-2020-12244 https://bugzilla.suse.com/1171553 SUSE Bug 1171553