Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.2164 USN-4400-1: nfs-utils vulnerability 23 June 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: nfs-utils Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Root Compromise -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-3689 Reference: ESB-2019.3970 ESB-2019.3953 ESB-2019.3911 Original Bulletin: https://usn.ubuntu.com/4400-1/ - --------------------------BEGIN INCLUDED TEXT-------------------- USN-4400-1: nfs-utils vulnerability 22 June 2020 nfs-utils vulnerability A security issue affects these releases of Ubuntu and its derivatives: o Ubuntu 20.04 LTS o Ubuntu 19.10 o Ubuntu 18.04 LTS o Ubuntu 16.04 LTS Summary nfs-utils could be made to overwrite files as the administrator. Software Description o nfs-utils - None Details It was discovered that the nfs-utils package set incorrect permissions on the / var/lib/nfs directory. An attacker could possibly use this issue to escalate privileges. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS nfs-common - 1:1.3.4-2.5ubuntu3.3 Ubuntu 19.10 nfs-common - 1:1.3.4-2.5ubuntu2.1 Ubuntu 18.04 LTS nfs-common - 1:1.3.4-2.1ubuntu5.3 Ubuntu 16.04 LTS nfs-common - 1:1.2.8-9ubuntu12.3 To update your system, please follow these instructions: https:// wiki.ubuntu.com/Security/Upgrades . In general, a standard system update will make all the necessary changes. References o CVE-2019-3689 - --------------------------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: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXvFIUONLKJtyKPYoAQgxvw/9FYwedWrysBogcE7cUj6XOiXmdTqr/4+h 5Jr8lFPMuJOhwT6/OzmJZtIMgApsa5Efr6Z/ddpJJUNv6NpAOwhrC2URqcBeNSfi KsBfa3g5fz//BI+gB+J6ZLgxn/ufYLdI+bDq4a5Nk+zg78n50la76/FaWZz7Oac5 ZLaW/VjSypiFBEyzd6Hcx36kUIP9MPXVa+Qz6Ccitx9S6lxbl2TTWmT+V0KhDQOB PQFUMHbH3cYuaaRARad40f9/u7mJvWF+Y3qMETrUCGtbPy3PWKF+ppk4OwA+rE4Z IxaYqut3tDfm2cNPQLCipRpNspwQ24HmEicK9GbvY2kbqurNDvHkbTNdftymh86j l4GcNjUhoqPQt3Gn0W5Dn8OweeqALnWb3dgdWinXLBdFV2ppuuosP/jiwAsOEdDG jUHCbTv3nPg8cfYDLCuKgSpYSR3iLwHuhzevp6JesqLGsrFExibl/k5k73lIshj+ DJv8sOg10UI4p+XvMEEw9jgJfJVWofufP9BS23nFtGiCGNoaFlRNHtEIllDZ6W1o U7sf8Am3DvoPEIpWt9Ez3f/KFTJdakr/5hlWNxrcE9PCnAUwYF/80pvIlvs9btA5 WEpcIv2/XlbNrOiJnN25MIkyw/9vR9jEibZZEcXYkFQtoI4zOiC1iUxL2DhaKU2/ gOfxauvC4Kc= =GXnX -----END PGP SIGNATURE-----