oss-sec mailing list archives
Re: CVE-2012-XXYY Request -- google-authenticator: Information disclosure due insecure requirement on the secrets file
From: Kurt Seifried <kseifried () redhat com>
Date: Thu, 18 Apr 2013 10:33:12 -0600
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 04/18/2013 04:45 AM, Jan Lieskovsky wrote:
Hello Kurt, Steve, Alexander, vendors, as noted in [1]: 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: [1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=666129 [2] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=666129#10 [3] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=666129#20 [4] https://bugzilla.redhat.com/show_bug.cgi?id=953505 Relevant upstream patch: [5] 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-----
Current thread:
- CVE-2012-XXYY Request -- google-authenticator: Information disclosure due insecure requirement on the secrets file Jan Lieskovsky (Apr 18)
- Re: CVE-2012-XXYY Request -- google-authenticator: Information disclosure due insecure requirement on the secrets file Kurt Seifried (Apr 18)