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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.0710 mbed TLS RCE patched 12 March 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: mbedtls polarssl Publisher: FreeBSD Operating System: FreeBSD Linux variants Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-0488 CVE-2018-0487 Original Bulletin: http://www.vuxml.org/freebsd/c2f107e1-2493-11e8-b3e8-001cc0382b2f.html Comment: This advisory references vulnerabilities in products which run on platforms other than FreeBSD. It is recommended that administrators running mbed TLS (PolarSSL) check for an updated version of the software for their operating system. - --------------------------BEGIN INCLUDED TEXT-------------------- FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection mbed TLS (PolarSSL) -- remote code execution Affected packages mbedtls < 2.7.0 polarssl13 < 1.3.22 Details VuXML ID c2f107e1-2493-11e8-b3e8-001cc0382b2f Discovery 2018-02-05 Entry 2018-03-10 Simon Butcher reports: + When the truncated HMAC extension is enabled and CBC is used, sending a malicious application packet can be used to selectively corrupt 6 bytes on the peer's heap, potentially leading to a crash or remote code execution. This can be triggered remotely from either side in both TLS and DTLS. + When RSASSA-PSS signature verification is enabled, sending a maliciously constructed certificate chain can be used to cause a buffer overflow on the peer's stack, potentially leading to crash or remote code execution. This can be triggered remotely from either side in both TLS and DTLS. [source] References CVE Name CVE-2018-0487 CVE Name CVE-2018-0488 URL https://tls.mbed.org/tech-updates/security-advisories/ mbedtls-security-advisory-2018-01 - ------------------------------------------------------------------------------- Copyright 2003-2005 Jacques Vidrine and contributors. Please see the source of this document for full copyright information. - --------------------------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 iQIVAwUBWqXbNYx+lLeg9Ub1AQiJ4RAAjckKWo47DlYmcGZjg7+rSBEMbleWah4j r6uzLdXIkTKAowCZICJ8zDXA441wyWsaARC3X4yiQbXixbv3fgUzRa2w6/vhigON QdqU3AVefdW4lhd6kpcsb4/69zcUDuwpGwDpKREMHSUQngHZhYee7Tkj5wB4ucgJ V3DsBNjN1ouHPdplVGRmqThEJ9fXbx4z3dAoFe81AZ3TgG3vpF1L0YjTEcn7WnGj T0wHANjePcbrnBYapYNH3isEiAU0FNqSnKR2brbuZowS5YeRUMCBe80nxqCGaQVp j9rrJEp8UudzCAfpM7TwZRVaaIZ5eV+cA1t6YpFHkedn6ier9GNF3Cg6uqmcUDfW 05gsuWJCfXJ2zgdCYu0cshGzuu6UF0E/tUKCXF2b5ptRfwtPYalocsx14klctjUf iL5F6sZ6ThokSyP3i2csvXHfyH1NgHObVcTAuxMWRfNsz0rzbXfVrqow3hk/5W+s wrbZ/CEi8NVvYm4pc8VR7Eeiq2m3WNcVN7OF5HAnY2lcHxEkXDt84cgfujgU6B04 jM1ik1f4xPmYgVw5sk5LIF23EcWi+ivmw7/t3D3ve6EPyrSZF5okN4F4hANK+W23 Hx8Knqe6tNu3xVVXyLyj4ES/mX8F3pPbrWwBf88vAY+Zj1Bjx86L5BiXqlwqs49V vwRhUX9RJN0= =u8wD -----END PGP SIGNATURE-----