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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.1892 curl security problems 27 May 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: curl Publisher: FreeBSD Operating System: FreeBSD Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction Denial of Service -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2019-5436 CVE-2019-5435 Reference: ESB-2019.1874 ESB-2019.1837 Original Bulletin: http://www.vuxml.org/freebsd/dd343a2b-7ee7-11e9-a290-8ddc52868fa9.html - --------------------------BEGIN INCLUDED TEXT-------------------- curl -- multiple vulnerabilities Affected packages 7.19.4 <= curl < 7.65.0 Details VuXML ID dd343a2b-7ee7-11e9-a290-8ddc52868fa9 Discovery 2019-05-22 Entry 2019-05-25 Modified 2019-05-26 curl security problems: CVE-2019-5435: Integer overflows in curl_url_set() libcurl contains two integer overflows in the curl_url_set() function that if triggered, can lead to a too small buffer allocation and a subsequent heap buffer overflow. The flaws only exist on 32 bit architectures and require excessive string input lengths. CVE-2019-5436: TFTP receive buffer overflow libcurl contains a heap buffer overflow in the function (tftp_receive_packet()) that recevives data from a TFTP server. It calls recvfrom() with the default size for the buffer rather than with the size that was used to allocate it. Thus, the content that might overwrite the heap memory is entirely controlled by the server. The flaw exists if the user selects to use a "blksize" of 504 or smaller (default is 512). The smaller size that is used, the larger the possible overflow becomes. Users chosing a smaller size than default should be rare as the primary use case for changing the size is to make it larger. It is rare for users to use TFTP across the Internet. It is most commonly used within local networks. [source] References CVE Name CVE-2019-5435 CVE Name CVE-2019-5436 URL https://curl.haxx.se/docs/CVE-2019-5435.html URL https://curl.haxx.se/docs/CVE-2019-5436.html URL https://curl.haxx.se/docs/security.html 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. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXOtjVWaOgq3Tt24GAQjrRxAAl4oO64pTjdyPBp3j/8mhwadOTn8EjDfE gGodhqTPIcFah3Nf6jsXTx6fG9wB/xovxw28eGd+u05x1lTyhHrUF/hcc0bSRSyo +5Gun+RxDXQSdkz/mpRWoyW2yYg5zdShndXV1vC4cdDPc5fj2gqHyKCFuhBfSWaZ ODtUbSqiIXNWS3cLwgku54qhnOEdlg5QFzAwLu8tnuAqxK3i4PxXPdsLsO+C3Pss xqMpuYxv2XoQ+YZtMZLYeP8id8ufaurS8JPeJjUM7GexvHaZ11WzNb9T2xGpk52F YWlIsIL0T3YIwren1hXQFBgfaR2/dBl9Aje3QiAjACKgwaHfrzXxKuDpYtmjD8pj xwTK7D1cwhgyb7mZAmKbHoJAjSaZ+hAILGMezph5lVBPaSHY+u4OPuAkgmRnoGCE fRic0na3xsINsK6XVw+0wIol+T0txyUOrKwRuYEpxSPDWDiJeU2twFvW1L3m+YHQ wFlGm1hVa6cNgUWbAetDBVp/TDS01SXcBheC8Cz1xkPxEPz1tpI0smUARiIqSIOY jg7lEvN/is1KHxvLK10FRX8AErjV9keAL9RWu6kWHZ4YLxS6WhJipPG9okIwGBO+ +cTr3YrTq2kapU5HN5/6CFlYjjbc3Bsv3TsRZq1+md4y0Rud9s4eIn+8E607U+rX VBj1R6UzlXQ= =PKU1 -----END PGP SIGNATURE-----