Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.3852 USN-5138-1: python-py vulnerability 11 November 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: python-py Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2020-29651 Reference: ESB-2021.2307 ESB-2021.1960 Original Bulletin: https://ubuntu.com/security/notices/USN-5138-1 - --------------------------BEGIN INCLUDED TEXT-------------------- USN-5138-1: python-py vulnerability 10 November 2021 python-py could be made to crash if provided with specially crafted input. Releases o Ubuntu 20.04 LTS o Ubuntu 18.04 LTS Packages o python-py - Advanced Python development support library Details The py.path.svnwc component of py (aka python-py) through v1.9.0 contains a regular expression with an ambiguous subpattern that is susceptible to catastrophic backtracing. This could be used by attackers to cause a compute-time denial of service attack by supplying malicious input to the blame functionality. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 o pypy-py - 1.8.1-1ubuntu0.1 o python3-py - 1.8.1-1ubuntu0.1 o python-py - 1.8.1-1ubuntu0.1 Ubuntu 18.04 o pypy-py - 1.5.2-1ubuntu0.1 o python3-py - 1.5.2-1ubuntu0.1 o python-py - 1.5.2-1ubuntu0.1 In general, a standard system update will make all the necessary changes. References o CVE-2020-29651 - --------------------------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 iQIVAwUBYYyQruNLKJtyKPYoAQhIkQ/9G0GaWs9UsP4XQMXvNddXnStOFGzH/+Bj O/F3R4/5/cQ4dpJbap0qzvsagQUA/ghOHc57OCwoaarnVyusJPVljYJR7u7pts9m WK64MWiEzvnMDfn7PnyT+ou6Dv7Kt+yL2legxaJo7YGQqXtgbIWHenGQrkYZSI5y VHcyok0eXK72QtkBL5WPADMZkNmkluJDkLuyNwjeWEwuEJtaHXdl7v8bp8PbldY1 V6+hYidEcNzYMkDI0U2+xvWZAdPczKUgshCQn6eqaEST2gZJlpscNnjqlB+h0aH8 afZiyhiDbfIsh/rk3mFYx2RLKXOMEm1CYg4a0pToRjO+w0DXV5MFkkRezPX2G6P1 QF4SsAL/fWIFBO0+2m0dwC9Aiqua/NaxbvZozpgtEs7SV7E06J1Wqx2JVZT6I1mL 3s6I05ljTACKEodOaiAFP6vA1pLA1RhmL34qWT72NNMRipnp1YMU12JzjCOdzS9g K7ooJSneJvXRzJJB9nQz3YrvIgPMhsgL84UYuPWYI5EpYqs3o+T8mCSnAWXspk+V pQD3DOgGAgxnWGCumd8oiuYWyMlDMsLsf1imIQPn1vfUAH1I3GrMcL900S7ZL5bS u3nJLmNc1h5Duwn8HSJiWCo0Sp//jX5qmh07yr8BpgxmQ/OehdQ6562+hP95vN7H zZv7A6rKEcM= =+fSW -----END PGP SIGNATURE-----