Date: Thu, 18 Apr 2013 10:33:12 -0600 From: Kurt Seifried <kseifried@...hat.com> To: oss-security@...ts.openwall.com CC: Jan Lieskovsky <jlieskov@...hat.com>, "Steven M. Christey" <coley@...us.mitre.org>, neoice@...ice.net, Alexander Wirt <formorer@...ian.org> Subject: Re: CVE-2012-XXYY Request -- google-authenticator: Information disclosure due insecure requirement on the secrets file -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 04/18/2013 04:45 AM, Jan Lieskovsky wrote: > Hello Kurt, Steve, Alexander, vendors, > > as noted in : > > An information disclosure file was found in the way > google-authenticator, a pluggable authentication module (PAM) which > allows login using one-time passcodes conforming to the open > standards developed by the Initiative for Open Authentication > (OATH), performed management of its secret / state file in certain > configurations. Due the lack of 'user=' option the secret file was > previously required to be user-readable, allowing (in certain > cases) a local attacker to obtain the (pre)shared > client-to-authentication-server secret, possibly leading to > victim's account impersonation. > > A different vulnerability than CVE-2013-0258. > > References:  > http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=666129  > http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=666129#10  > http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=666129#20  > https://bugzilla.redhat.com/show_bug.cgi?id=953505 > > Relevant upstream patch:  > https://code.google.com/p/google-authenticator/source/detail?r=c3414e9857ad64e52283f3266065ef3023fc69a8 > > @Alexander - since I am not sure I have described the attack > vector above properly, please correct me if / where required. > > @Kurt * the CVE-2012- identifier should be allocated to this issue, > since the security implications of this problem are for the first > time mentioned here: > http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=666129#10 > (2012-09-22), > > * from what I have looked, there doesn't seem to be: > http://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=authenticator > > a CVE identifier allocated to this issue yet (as noted above > CVE-2013-0258 from that list is different issue). > > => could you allocate one? Please use CVE-2012-6140 for this new issue. > > Thank you && Regards, Jan. -- Jan iankko Lieskovsky / Red Hat > Security Response Team > - -- Kurt Seifried Red Hat Security Response Team (SRT) PGP: 0x5E267993 A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.13 (GNU/Linux) iQIcBAEBAgAGBQJRcCBIAAoJEBYNRVNeJnmTS94QANxJrniYl6j2ZzpUVLi3WQ9M XiYGNctPbJu8duZUqYQVp0Wzj93BnlvDsJ2Ea+lf1fIdwps+qitTDxLcaDAz06qN bJi3795Mf5JBb81fNzSa8T3igwCO4hpgZvneajsFswbPzUrnSjbTjOn44YHP34L+ pM6OFVsL0I+0ymXbu7oqaMRjfnhBDM1LSYZXKPO7a/Swzl8VRiiqCXKM0xIscFdP zcRBYQiFn1P5e8zWMkgGVxt+dVB3I5Ly+QkkiNeJRhP5HeBRwod65hTIBZqgLVDm 9qKukd4M2RCHocLSZKLEHqtaEat3ytgpSKKkfRthd+sxiMQRjZZI2o0SNqlnkx5o I0or7V41GYF9y98pz5zFDc9TMaMfp4OM4gl8KrSu3jw/qNKVfZkiEuC3ybJb10eA dCOnTetwu8UosUrlRHsC93+urFRmFfkqWXcVvtzTkmcr+MvddBld9IO9d3UKSLW7 NPK2Rzlg7O6QK6fH1g3GzxTLDoXRTelZPosb5t0L4PVoEE0ZjSDCUdLc8/OLDLQv r61/63HVUJQfuYxuSubSQ14TKlmgbftdZC1p3uerKPojATW7F/tGCoUeMgZAt8bH UPbF7OxFxxplsNjNaCHM7ZzAsNQHa84m8DWkJMwjKbGvMzZhfwQqXUyN/5TDmxpM joCyN77TKUyx/A8Th80n =Z0KR -----END PGP SIGNATURE-----
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