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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.0310 USN-4256-1: Cyrus SASL vulnerability 29 January 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: cyrus-sasl2 Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-19906 Reference: ESB-2019.4770.2 Original Bulletin: https://usn.ubuntu.com/4256-1/ - --------------------------BEGIN INCLUDED TEXT-------------------- USN-4256-1: Cyrus SASL vulnerability 28 January 2020 cyrus-sasl2 vulnerability A security issue affects these releases of Ubuntu and its derivatives: o Ubuntu 19.10 o Ubuntu 18.04 LTS o Ubuntu 16.04 LTS o Ubuntu 14.04 ESM o Ubuntu 12.04 ESM Summary Cyrus SASL could be made to crash or execute arbitrary code if it received a specially crafted LDAP packet. Software Description o cyrus-sasl2 - Cyrus Simple Authentication and Security Layer Details It was discovered that Cyrus SASL incorrectly handled certain LDAP packets. An attacker could possibly use this issue to execute arbitrary code or cause a denial of service. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 19.10 libsasl2-2 - 2.1.27+dfsg-1ubuntu0.1 Ubuntu 18.04 LTS libsasl2-2 - 2.1.27~101-g0780600+dfsg-3ubuntu2.1 Ubuntu 16.04 LTS libsasl2-2 - 2.1.26.dfsg1-14ubuntu0.2 Ubuntu 14.04 ESM libsasl2-2 - 2.1.25.dfsg1-17ubuntu0.1~esm1 Ubuntu 12.04 ESM libsasl2-2 - 2.1.25.dfsg1-3ubuntu0.2 To update your system, please follow these instructions: https:// wiki.ubuntu.com/Security/Upgrades . After a standard system update you need to restart services using SASL to effect the necessary changes. References o CVE-2019-19906 - --------------------------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. 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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 iQIVAwUBXjED1WaOgq3Tt24GAQjVqg/8D0d6qHAIlcQtEiUiTLUAfzDB2akEf6O7 v2WavhDn1zn+Gy4bzoaIEx/W4WlErr+TNiIgEzNkA7oICxlvZ9KFIWZ8PEyukA6W pAdQ49ukDWS+XQLb1jt5/K1+w+S+uPuk0mUmZ5zInWxNr35sezICPzY9d15NBm3f q2CcrPHmiT+ZrT0yZlLlQIbc3TldLMzIMCL2/XVcYY21NmH6bc7S9Ey/U0sQ9t09 fgOdPtZBOz2ruVJ1GDgWdBtU0mXg0opmtJj5A+ga44CkvUzCE8onQThEx1hJZqev MwJdyNTZ16bWUU6qvrjiaGnp0+nvg7TsGWbY5tApS4jPz78OrSaLDyz32kAQUCRw s1DnQVd7lVe66s9dgi5xmSoNZqC/UepbW7FmnpiJat98GC5ajjYUzg3exICtPBJm +wGEUdzrPwItFqA1u3g2Em6n1FSzVoQ07fmNMXXuCUKAT1/VmuBG6IxZkCdWvr0B bpkJ5g/DfQLTNMBcLwqbVEu56w83pPP+0xZ2R83EStsPqocxMDXxZD1KqjFH25Yg XDpZKwMbrNKPlPIfhRp/q9O5hHrxRRMDIcPw96kLSkXsaruuuNgczcnJ8APYXkLM oQb8shpohAIEI1FguNLX7jx+SqpVoTikKhJ1CWpPs563FcnqsiNIqZSKOxuezzNl yP+MLI0xW9Y= =i9jJ -----END PGP SIGNATURE-----