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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.3190 USN-4108-1: Zstandard vulnerability 22 August 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Zstandard Publisher: Ubuntu Operating System: Ubuntu UNIX variants (UNIX, Linux, OSX) Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-11922 Original Bulletin: https://usn.ubuntu.com/4108-1/ Comment: This advisory references vulnerabilities in products which run on platforms other than Ubuntu. It is recommended that administrators running Zstandard check for an updated version of the software for their operating system. - --------------------------BEGIN INCLUDED TEXT-------------------- USN-4108-1: Zstandard vulnerability 21 August 2019 libzstd vulnerability A security issue affects these releases of Ubuntu and its derivatives: o Ubuntu 18.04 LTS Summary Zstandard could be made to execute arbitrary code if it received specially crafted input. Software Description o libzstd - fast lossless compression algorithm - development files Details It was discovered that Zstandard incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS libzstd1 - 1.3.3+dfsg-2ubuntu1.1 zstd - 1.3.3+dfsg-2ubuntu1.1 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-2019-11922 - --------------------------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 iQIVAwUBXV3q7maOgq3Tt24GAQjJGg/+M7eOmif5GdUkLRbk984nkX2dUfD9hKqV xFKGpb5Akucv5612bxA33JI1vKRws5sfPx4QxRgSwexGaWo5Izij7w/1ZbFnfq86 ZeKQJoCrWa4sEU8lByj64bwcf7vlvjkcwQ6m6Lz6ebMTzBvu7SiH/fMONRkMwUWR dX90HKq+H1o9XEBAPjSMIPFb9mCvY5JuvuosdPtTds4QKqDN35f07MLrgONAAw2r 04uIvrwsbUx2S12BSQHWMDJ9UCUrxFv89pTMn7GyBOoDeiyrwssY3bVm7DwsOR3c 7UkwsUSzB5obY4jNY4xBdPcqPNRqt3IQt5UIMWAiotheHcydQhVSMFaR4gsSmAIX jswi6SmghMcA2WOt0uWqIWnv1L1mlFrf3nalpHuNXBnFeovl16yg3DxWF2a5sgBP kIZW0HxYR4Y0ZVfbn8LEw+7+ICnlcM8vXUtzATIFqpUPO16C/iv4rrajjdV4Py0O D1Nd9zQz2PAzfmw80dO0XfpMfenJVRI4Kq3Nc8g68Ks9MBHrY26JrSIvkBWGHicu iJ5BKqXwh9OSvm/+MHRQColAFVzuFIf1gKjopKEV6ze1sOs6wy3VHVQBiAu+bpgs DDnKAty4xad5bCPIAsqZY9vNoMJjQq4n60ftm5cZulCqyOxo4ShfmLq+OmK978Nh 5FP3YJvjYow= =PDGZ -----END PGP SIGNATURE-----