Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.1977 USN-4384-1: GnuTLS vulnerability 8 June 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: GnuTLS Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Access Confidential Data -- Remote/Unauthenticated Unauthorised Access -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2020-13777 Reference: ESB-2020.1974 Original Bulletin: https://usn.ubuntu.com/4384-1/ - --------------------------BEGIN INCLUDED TEXT-------------------- USN-4384-1: GnuTLS vulnerability 5 June 2020 gnutls28 vulnerability A security issue affects these releases of Ubuntu and its derivatives: o Ubuntu 20.04 LTS o Ubuntu 19.10 Summary GnuTLS could be made to expose sensitive information. Software Description o gnutls28 - GNU TLS library Details It was discovered that GnuTLS incorrectly handled session ticket encryption keys. A remote attacker could possibly use this issue to bypass authentication or recover sensitive information. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS libgnutls30 - 3.6.13-2ubuntu1.1 Ubuntu 19.10 libgnutls30 - 3.6.9-5ubuntu1.2 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-2020-13777 - --------------------------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 iQIVAwUBXt14KeNLKJtyKPYoAQhNmRAArThEExzLlcME2l1Pg1asWTwXwFOLl+2Q rZlKN3w1c8Yk3L0eHZRP8qatizfqRcYU6VPTZMm5OEb2gR0QZWVXdd+Fcd6JJE0D sHgwJVX38gE3799dCOSBwQs78AEKOmr+8Znpm4gMJuVmOcqUjmwyZdemXsl53Jof K0mAuDlwRtyS7zc5aw7VuM6jETtSdmQ+JvraHA1Nfh9nNIXwyOA5oaJVzZ5CvnCb 6lZjtoQ4B5pN8cwQwSUXVFxdg8ApinHYLEkuuoSmJc/1WqKgsGK1oHuamT5OxSvC hXeWM54u6XJ4374WJHAM8cuEezPYMzh5Z/BFfUJH+aG0X+c4xgYrt4Llwe7trhlt FjPawM8Pe3l/EfkTLN5Hcws2Sai8G5BBCY8fnT1X3VHR9Wtw4ziodlKzgX/UIMDF R1Kh0VMqe326awzPuuBGOQN2IrQrWz/DtYu0J59ghPJnRx5mR/CNasy3vak4C8iT 5K4d4Y6CUzU8VzuYVlkcW3ADuqmhGP95/vdDeu7rU+EtNdSiD+azc1D7zPgZ9uoL dFL45+1bbPnUOt2FxEn/BHN06FETAAS9KKrooPGzlqJDAaIXd/h6bUiiFihWp/5r BF1LS+/bGOj/jEQrllPF2OatWJL71ndVwVvwyaA42e1n8e1yjUmIcHfvAxP7PBX2 67iWQWNGG0E= =Jcz4 -----END PGP SIGNATURE-----