CVE-2019-10203

PowerDNS Authoritative daemon , pdns versions 4.0.x before 4.0.9, 4.1.x before 4.1.11, exiting when encountering a serial between 2^31 and 2^32-1 while trying to notify a slave leads to DoS.

PowerDNS Authoritative daemon , pdns versions 4.0.x before 4.0.9, 4.1.x before 4.1.11, exiting when encountering a serial between 2^31 and 2^32-1 while trying to notify a slave leads to DoS.

An issue has been found in PowerDNS Authoritative Server allowing an authorized user to cause the server to exit by inserting a crafted record in a MASTER type zone under their control. The issue is due to the fact that the Authoritative Server will exit when it runs into a parsing error while looking up the NS/A/AAAA records it is about to use for an outgoing notify (CVE-2019-10162).

An issue has been found in PowerDNS Authoritative Server allowing a remote, authorized master server to cause a high CPU load or even prevent any further updates to any slave zone by sending a large number of NOTIFY messages. Note that only servers configured as slaves are affected by this issue (CVE-2019-10163).

An issue has been found in PowerDNS Authoritative Server allowing an authorized user to cause the server to exit by inserting a crafted record in a MASTER type zone under their control. The issue is due to the fact that the Authoritative Server will exit when it tries to store the notified serial in the PostgreSQL database, if this serial cannot be represented in 31 bits (CVE-2019-10203).

An issue has been found in PowerDNS Authoritative Server before 4.3.1 where an authorized user with the ability to insert crafted records into a zone might be able to leak the content of uninitialized memory. Such a user could be a customer inserting data via a control panel, or somebody with access to the REST API. Crafted records cannot be inserted via AXFR (CVE-2020-17482).

The pdns package has been updated to version 4.1.14, fixing these issues and several other bugs. See the upstream changelog for details.

Also note that manual intervention is required to fix the CVE-2019-10203 issue for those using PostgreSQL with pdns. See the upstream blog post for details.

This update for pdns fixes the following issues:

Security issues fixed:

• CVE-2019-10203: Updated PostgreSQL schema to address a possible denial of service by an authorized user by inserting a crafted record in a MASTER type zone under their control. (boo#1142810)
• CVE-2019-10162: Fixed a denial of service but when authorized user to cause the server to exit by inserting a crafted record in a MASTER type zone under their control. (boo#1138582)
• CVE-2019-10163: Fixed a denial of service of slave server when an authorized master server sends large number of NOTIFY messages. (boo#1138582)

Non-security issues fixed:

• Enabled the option to disable superslave support.
• Fixed pdnsutil b2b-migrate to not lose NSEC3 settings.

This update for pdns fixes the following issues:

Security issues fixed:

• CVE-2019-10203: Updated PostgreSQL schema to address a possible denial of service by an authorized user by inserting a crafted record in a MASTER type zone under their control. (boo#1142810)
• CVE-2019-10162: Fixed a denial of service but when authorized user to cause the server to exit by inserting a crafted record in a MASTER type zone under their control. (boo#1138582)
• CVE-2019-10163: Fixed a denial of service of slave server when an authorized master server sends large number of NOTIFY messages. (boo#1138582)

Non-security issues fixed:

• Enabled the option to disable superslave support.
• Fixed pdnsutil b2b-migrate to not lose NSEC3 settings.

This update was imported from the openSUSE:Leap:15.1:Update update project.

These are all security issues fixed in the pdns-4.5.1-1.5 package on the GA media of openSUSE Tumbleweed.