Date: Mon, 5 Sep 2016 18:45:19 -0400 (EDT) From: cve-assign@...re.org To: anarcat@...ian.org Cc: cve-assign@...re.org, oss-security@...ts.openwall.com Subject: Re: CVE ID request: certificate spoofing through crafted SASL message in inspircd, charybdis -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 > inspircd published 2.0.23 that fixes an issue with SASL > authentication. The details are here: > > http://www.inspircd.org/2016/09/03/v2023-released.html > > All versions are affected. >> This release fixes a serious security vulnerability in m_sasl in >> combination with any services that support SASL EXTERNAL. To be >> vulnerable you must have m_sasl loaded, and have services which >> support SASL EXTERNAL authentication. >> >> This vulnerability allows any attacker to spoof certificate >> fingerprints via crafted SASL messages to the IRCd. This allows any >> user to login as any other user that they know the certificate >> fingerprint of, and that user has services configured to accept SASL >> EXTERNAL login requests for. >> https://github.com/inspircd/inspircd/commit/74fafb7f11b06747f69f182ad5e3769b665eea7a >> https://www.irc.wiki/InspIRCd >> InspIRCd is an IRC daemon written entirely from scratch, it is one >> of the few IRC daemons to be written in C++ Use CVE-2016-7142 for this issue only in the InspIRCd codebase. >> This bug appears more widespread than just InspIRCd, and seems to >> affect most or all other implementations of SASL EXTERNAL, including >> Charybdis and UnrealIRCd. > It seems to also affect Charybdis, which fixed the issue in the > upcoming 3.5.3 release: > > https://github.com/charybdis-ircd/charybdis/commit/818a3fda944b26d4814132cee14cfda4ea4aa824 Use CVE-2016-7143 for this issue only in the Charybdis codebase. >> https://forums.unrealircd.org/viewtopic.php?f=1&t=8588 >> >> Security: SASL security issue (UnrealIRCd 4.0.6 & 126.96.36.199 released) >> >> A security issue was detected in a number of IRCd's, including >> UnrealIRCd, regarding the way SASL is implemented. >> >> An attacker can send an SSL fingerprint of his choice to services when >> doing SASL authentication. An attacker can compromise a services >> account if the user has an SSL fingerprint stored in services. >> >> https://github.com/unrealircd/unrealircd/commit/f473e355e1dc422c4f019dbf86bc50ba1a34a766 Use CVE-2016-7144 for this issue only in the UnrealIRCd codebase. (We realize that the file is m_sasl.c, the function is m_authenticate, and the array is parv in both the Charybdis case and the UnrealIRCd case, but we decided not to try to share a CVE ID between these two products.) - -- CVE Assignment Team M/S M300, 202 Burlington Road, Bedford, MA 01730 USA [ A PGP key is available for encrypted communications at http://cve.mitre.org/cve/request_id.html ] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBCAAGBQJXzfUcAAoJEHb/MwWLVhi2+TUQAJiZ9E61fr6h/APTcz7CWDAJ Hi1ixYOqZAVnGNevJ2Q7+kmg9h872ftwX7euCmMoLFBHPILaBhELbbnw5N1wa09u PfrQFf/3D0BwrKd50Pnu/N5+5PRJ6Oy7Oa5aaf1vdeQbbaQbO2P6YV5MrcB/NJoe Lh5GoLM3oqGS5qde+ep3RKLeOixu2KqopaP9JAH1e2a25m0Wva92tQVYqgGIxROa PPiRRRXFDbm8j9VZ4D4VBHlJhdjwjw85OT/WNxXx3wBbeJwdtI+1puS5OEhQFGsl Eh993vGHyTCvw2obVn2YnIng1qHfkdfe5lxjJBbE5/a6yFmNQAS/zUURBL01DPlI uhWYablVV9Vv8++gaezGtJd1OI60Kl0vPch44yzvDOeI5sQHjQNMMwQ2oe+gAlcv grrkVqtKd2hkNBh1NATA9MoTIErYZsWZCddGPo50IqHyqaZ5eyJaj0JELOF8E7q/ 2oe0UWuXcvcD+8oAZvbEVJuBUI+ZV+d6wcL4tEOcEG4gL5qDh0hOi8aY/u5zi+fb gLcjoBW9TzlGZy3f0CZ2N0s3v2xFai19JdSLzRM+TXzFHf4PQ5MoexWgk10UPdsk 9OJXqTl0LqEMqTHPOLXw08mhgWaU55vRI3wCjnUyTY0GdmUZpLy3R8yWCJk5RUmy g5+Do/FYzRkh/k/3L73U =c9S9 -----END PGP SIGNATURE-----
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