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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.2643 curl -- password overflow vulnerability 6 September 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: curl Publisher: FreeBSD Operating System: FreeBSD Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-14618 Reference: ESB-2018.2641 Original Bulletin: http://www.vuxml.org/freebsd/f4d638b9-e6e5-4dbe-8c70-571dbc116174.html - --------------------------BEGIN INCLUDED TEXT-------------------- curl -- password overflow vulnerability Affected packages 7.15.4 <= curl < 7.61.1 Details VuXML ID f4d638b9-e6e5-4dbe-8c70-571dbc116174 Discovery 2018-09-05 Entry 2018-09-05 curl security problems: CVE-2018-14618: NTLM password overflow via integer overflow The internal function Curl_ntlm_core_mk_nt_hash multiplies the length of the password by two (SUM) to figure out how large temporary storage area to allocate from the heap. The length value is then subsequently used to iterate over the password and generate output into the allocated storage buffer. On systems with a 32 bit size_t, the math to calculate SUM triggers an integer overflow when the password length exceeds 2GB (2^31 bytes). This integer overflow usually causes a very small buffer to actually get allocated instead of the intended very huge one, making the use of that buffer end up in a heap buffer overflow. This bug is almost identical to CVE-2017-8816. References CVE Name CVE-2018-14618 URL https://curl.haxx.se/docs/CVE-2018-14618.html URL https://curl.haxx.se/docs/security.html - ------------------------------------------------------------------------------- Copyright (C) 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. 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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 iQIVAwUBW5B8AmaOgq3Tt24GAQgIzxAA0T/PttNl8vOBQutYkg2YjILo0cqLe1d/ lU4daRhhWDQV3g9Mx0LYxIk0p+GnEjRS9d1p9gxZyOqUM3P3kJ6YPMnvY3N8+0MF 6+gQSfbQz8zyXWmHkYhcJqTZDwPrz8DnRXVafFU2ir/HsDLAntssgwcAtRFAlpVo 5uaVvDhtSPjSd2L4opbgdQrB5AYn7YWaw0Jy9gE3qdLUtdSccQ9uGhH/Py4Kh2l9 6Wfl8TWxkC0sneprogxICBJ72dJjPOnx+Riowni/gGz7IngWhOVjmPBlMfrGS1na 8KetAqGn/yoeFumv9igOtv9BvGC1MWq7oKzdAYRF9YfmMdmJqbHK7tyOAqaBj2FB gJdtDN9VFAnr8yB90TDL3RtMuwnie/fS4O9dmIyTBHWqQyIFWIylGHocQ12v9Eld +raPrvSfvZuJVyKMnD0Lg1MfR8lZY/4yGgRW4WSs2tkSwGT1/yqiTAeTb/hsWmrN FQ1/nNSEmm3rqETBqOr5z8coaOQIMLJ7bLI3n+YDSFNo0oxq2WaaJXngkQl3VQ1I gK2xvnGKNhCZPnH9pGhs0JCDSIvS+BLBM7hGFVXr7adAMDKMITLVES2By38SisCV bKlNbwxyqFBWI4XGfnHuMqntf64T5ERiDfgokXcY5/lm5GYz8VPXs727sbEX3JCr mILZ1iH8Xxc= =H2mw -----END PGP SIGNATURE-----