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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.3419 USN-4562-1: kramdown vulnerability 1 October 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kramdown Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Read-only Data Access -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2020-14001 Reference: ESB-2020.2749 ESB-2020.2740 ESB-2020.2731 Original Bulletin: https://usn.ubuntu.com/4562-1/ - --------------------------BEGIN INCLUDED TEXT-------------------- USN-4562-1: kramdown vulnerability 30 September 2020 kramdown could be made to crash, run programs, or leak sensitive information if it opened a specially crafted file. Releases o Ubuntu 20.04 LTS Packages o ruby-kramdown - Fast, pure-Ruby Markdown-superset converter - ruby library Details It was discovered that kramdown insecurely handled certain crafted input. An attacker could use this vulnerability to read restricted files or execute arbitrary code. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 o kramdown - 1.17.0-4ubuntu0.1 o ruby-kramdown - 1.17.0-4ubuntu0.1 In general, a standard system update will make all the necessary changes. References o CVE-2020-14001 - --------------------------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 iQIVAwUBX3UvuONLKJtyKPYoAQgYMA//TTf27useNffOjVPmX9H5OGFNV9g8MRgo GLZS2MVtHuxp8Kt78DWksyw5kPD4Hw2ebiUCg+dpRKqQamnQbOu8mPlrdEOfgW2g JKqyiFOwi7P4KKzwcdt243RzXpJS8e7jq2JT3xnkXoix5qvKAJqHnYJoI2qGfQEI OUGORkUr+ovSL7JGCjdlp38kYG7Ne6A+mvg6Kq1N9ZD7cnn1YwOMrMBP3X7l4aS9 +s6WoRjEKKr2BnJuB1Y6+iMN+P4VdIAZ80sMN9iI6i66SUJSdSaLyMAjYZs5co1E 4fL1vq5Abg+XZhqgGXEOnixenBIT/lTMAJawL3WbIMwOXnrQJFU9pKf22lRL3R6o nlsvnSD30EQ5KFAgGXKEatAXYidRiPZRtas1Uqq6fIiVy0E9u7/6H8Ud+A013V9q Ce0+O12Gg09AS4t/rkX7M1a3ipClB5CoPpmgOGhCadOfal/CPCUwJHcdoDOcqS4F M6wT3nF8HOdSHTpoUASQwjinXvw+hD69QvLfnfh6rSkyc2SNaHtLE0YYOtOhgWBg uHIZrdxhQtgQF3pOk6AF6SV/4Ls5NIAv0ciXKtPdnYGSQ9HuHbMhQG8HX8YUfGwm OvwyGexih4BHw3Ef7HijPU921SWzPpwzDDgdgsbw+A7XFRfYcM8ryOmIDRikb8Oi DcLhmCVySg0= =2UUZ -----END PGP SIGNATURE-----