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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.4062 USN-5569-1: Unbound vulnerabilities 17 August 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Unbound Publisher: Ubuntu Operating System: Ubuntu Resolution: Patch/Upgrade CVE Names: CVE-2022-30699 CVE-2022-30698 Original Bulletin: https://ubuntu.com/security/notices/USN-5569-1 Comment: CVSS (Max): 6.5 CVE-2022-30699 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N) CVSS Source: NVD Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - --------------------------BEGIN INCLUDED TEXT-------------------- USN-5569-1: Unbound vulnerabilities 16 August 2022 Unbound could be made to cache rogue domain names. Releases o Ubuntu 22.04 LTS o Ubuntu 20.04 LTS o Ubuntu 18.04 LTS Packages o unbound - validating, recursive, caching DNS resolver Details Xiang Li discovered that Unbound incorrectly handled delegation caching. A remote attacker could use this issue to keep rogue domain names resolvable long after they have been revoked. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 o unbound - 1.13.1-1ubuntu5.1 o libunbound8 - 1.13.1-1ubuntu5.1 Ubuntu 20.04 o unbound - 1.9.4-2ubuntu1.3 o libunbound8 - 1.9.4-2ubuntu1.3 Ubuntu 18.04 o libunbound2 - 1.6.7-1ubuntu2.5 o unbound - 1.6.7-1ubuntu2.5 In general, a standard system update will make all the necessary changes. References o CVE-2022-30699 o CVE-2022-30698 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: https://auscert.org.au/gpg-key/ iQIVAwUBYvwz98kNZI30y1K9AQi66g//ZqPZDDLG8PJXYqACUf0d6FKoack1IFqs 3vzaSIr69IlDDS/eSw5xR9UmLzbaTElhipgkIqovMFBABM3NIzGbKEW+wV2OGjXl j16yDs3TKp2z4MHcj/spv4AxV9d6qpikUyXv9uKaE2rRJqot89coRa3KarftGpz1 8CjYtPTP8jobGufWafXIWrT8eYXdyKi2PUzlVhq39IEuiEfXmnIiGyE/u+YcFQNe jQ5xPfX4RbbjwoteW5xy4Gy+vlLbKlIAyxci4pWCob/PLex1VIYCDdUEnbMqTMTU FQo+VuuVWNsDUj5xBgidMfkqdOA8jfMmwuFrDW2DjWla5aTTkz2g2dBCiBQVat/Z cf2JPih3vM0EBEo+z8hQvCA4BQuSdHWSxog7i4XkynXdD+wF/iRZCsxhA2veP8f1 vMe8hZLw6eg54cHdYpQHa+YCjOqmdROsn5CO1/MnJlCY2twzLa2nrxg3eJOKTuHb EgoxQcoXEC+E4D37GZPTkYgbfuSbmDK+dn3yBNngi5Ouk3+ohRlWa7wMvAYG/fTp 61kUf84FK7bJtkjlJ5C8nTtnvasgF5ZeNbb/+iS0R7haQs3Qb2qINeQQvxVRByiG vgzC6rEf/UktLdgFsTwKtFqPAXrvZFttG7W6BKv/HpEQPi+H9YG8wJuVBdmAgtdE y6P5ldjDLwU= =Lqzr -----END PGP SIGNATURE-----