[tahoe-lafs-trac-stream] [tahoe-lafs] #1654: placeholder

tahoe-lafs trac at tahoe-lafs.org
Mon Jan 9 06:54:32 UTC 2012 

#1654: placeholder
-------------------------------+-----------------------
     Reporter:  warner         |      Owner:  nobody
         Type:  defect         |     Status:  new
     Priority:  supercritical  |  Milestone:  1.9.1
    Component:  unknown        |    Version:  1.9.0
   Resolution:                 |   Keywords:  integrity
Launchpad Bug:                 |
-------------------------------+-----------------------
Changes (by zooko):

 * keywords:   => integrity
 * priority:  major => supercritical
 * milestone:  undecided => 1.9.1


Old description:



New description:

 This is the ticket where we will track the details of a failure of
 assurance of integrity. For now, here is the announcement:

 -----BEGIN PGP SIGNED MESSAGE-----
 Hash: SHA1

 Dear Tahoe-LAFS Users:

 Kevan Carstensen of the Tahoe-LAFS core team has discovered a security
 vulnerability in Tahoe-LAFS v1.9.0 which would allow a sufficiently clever
 attacker to corrupt the retrieval of mutable files or directories which
 are
 retrieved with v1.9.0 or, in some cases, to corrupt the stored copy of
 mutable files or directories which are updated with v1.9.0.

 The recommended defensive action for all users is to downgrade to v1.8.3,
 or
 to refrain from using mutable files (either SDMF or MDMF) with 1.9.0.

 A FAQ about downgrading from 1.9.0 to 1.8.3, which was written before we
 discovered this critical security vulnerability, is here:

 https://tahoe-lafs.org/pipermail/tahoe-dev/2011-December/006905.html

 The FAQ is no longer accurate about 1.9.0 being free of dangerous flaws,
 but
 it is still accurate about 1.8.3 being free of compatibility problems.

 We'll be providing a patch soon. We are still writing tests for it and
 searching for other similar bugs and so on. Of course, as soon as we
 release
 the patch, this will inform any attackers of exactly what they could do to
 users of 1.9.0. Therefore, if there are any users who are especially
 security-sensitive, then they should downgrade to 1.8.3 before we release
 the
 patch, or else they should suspend their use of mutable files and
 directories
 until we released the patch and they've applied it.

 Once we are ready to publish the details of the issue we will post them to
 this issue tracker ticket:

 https://tahoe-lafs.org/trac/tahoe-lafs/ticket/1654

 Please feel free to contact me with any questions or concerns, using GPG
 encryption. Please Cc: Brian Warner, David-Sarah Hopwood, and Kevan
 Carstensen on all such email.

 Regards,

 Zooko Wilcox-O'Hearn, on behalf of the Tahoe-LAFS core team


 GPG fingerprints:

 Brian Warner <warner-tahoe at lothar.com> 967E FE06 6998 7241 1A77  DF36 D43B
 4C9C 7322 5AAF
 David-Sarah Hopwood <david-sarah at jacaranda.org> 3D6A 08E9 1262 3E9A 00B2
 1BDC 067F 4920 98CF 2762
 Kevan Carstensen <kevan at isnotajoke.com> 7E1E 99DB 97B1 DD5F 8154  5973
 8E6B 2106 2425 D7AE
 Zooko Wilcox-O'Hearn <zooko at zooko.com> A60B 7EE1 7164 D0C5 F137  3868 5F22
 F428 242B E85F

 - -----BEGIN PGP PUBLIC KEY BLOCK-----
 Version: GnuPG v1.4.11 (GNU/Linux)

 mQGiBEMB9ZARBACsDthnNvgj8ZnP33ViSgxg1ruCiuCGGStk06nLLFCiqgpym2sW
 10DCajYcIbWw3LtPKetp14xj+p+4wvtej5+LP+gsQ5N+O9zLhaBAbc9aC7jn3xHE
 2RsHPKbqvfCx/FNp3HvKRIhZdzRgKjFTRMp3O9DNcfD9/tgK8RPzVH75twCgzN3N
 9oVoxGbfxAaToY1QAJeaDGED/3lw92sABU9SiFs8u3dJHsqEtWjVVAU1Ung2AeVp
 hF05OgRrPR3PpAaF2GsFOmf2dSiexk8uN+cleqX3sWgQ02hH+Ppv9hT1ycAOIMCE
 31g6TTtLMpWTcAcyxecNBVU5XBYOfIsQzULS0v0WvUGAQfQ3GXxFwei3RMtUBLAR
 7Xn+BACW66N9+u2V7N9wPCI2DjN7wZGQs2mH0Ngr/lDk1t4GHD6n6qRP1UczT5cf
 wLcn1T9DeBBCZ7G9qdkCl5/9zGEZ/oOs+qFxKQ/1r99HKDxl+v1Er88BSCaXJ0W8
 iEu08agtTYVeSHa1yoRw/OYgeShyvAi6UiJNU80EtQOVxPR1WrQuWm9va28gTydX
 aGllbGFjcm9ueCAoSGFja2VyKSA8em9va29Aem9va28uY29tPohgBBMRAgAgAhsD
 Ah4BAheABQJJr8YEBgsJCAcDAgQVAggDBBYCAwEACgkQXyL0KCQr6F/ljACdH5YY
 Idzah/onhltusit9C3ZhCoAAnjtP2BCp45dKLgVtVNVYGDro0cx3tC9ab29rbyBX
 aWxjb3gtTydIZWFybiAoSGFja2VyKSA8em9va29Aem9va28uY29tPohgBBMRAgAg
 BQJJr8aZAhsDBgsJCAcDAgQVAggDBBYCAwECHgECF4AACgkQXyL0KCQr6F/q/ACe
 IT1ra2rEo9DTvkyuyopMB+gmLGkAnRT5HlTzgWR5IWXebupMIM4+uBvQuQENBEMB
 9ZEQBACEk0DKOZsds2a8+wgNzCnZwxJPtdJBXogwtTaB7XnvsqBrkTw12begWck/
 2k4PhNwHlrKszfz8tzhQGUuMiZqhrvDqhPozqIWWPSJtJgJSqS7OaFDJncNdFRDP
 3aggkER9J2YjVB23Ig88zIFxvzh6b57MJZhnhJyqYE74DklZawADBQP/WyQTF1JT
 Iv4cbNDHNSihtp/Q+L0cNJvT23/4jAN/P1KCWui5M7QV4PBjjS6h/raXJ1gKh/G0
 YXB8APbUvSNdVySVg3fBoNK/okcKspxUNTusK6it7gZ7PtMNvuOudiIbVrfjXQlQ
 s0gqDxht8aH0Br41+VsaTc8oaSLTUK7VdWqISQQYEQIACQUCQwH1kQIbDAAKCRBf
 IvQoJCvoX/rMAJ9QAMLP+zCP0Wmxw6MpQMjLqA4bRwCeO/TYWIA1onjBfV/qAYQ0
 /U0x8sOZAaIESa2nNREEAKJ8GS7J2BpNkqVry+t0ZhB8+ziFyTflOID2kPFAej+4
 ez/jMMzP4DU4zFmCFmwreZZMA+36WKLY4OsB77amm8PhY5D0DTEjYMFWJUi2j4Sn
 7URPNT74wia0QamPRd80wnn2li+KNVImeGHkjzj9HXl1VaJO2vqoOyOEyAkvdscr
 AKCL/QCX7WPaHKar0VEabVISGMTt0QQAmLeZDCGaUhmAx2ymizhisqvO/v3wQCIw
 lLctxcQG/YE/c+NFrn29UNwpzpLbRH5KDDopNXfHfDs+haQXJ+AQ9iO5xyDfrumy
 cTpsN/K02kz2uiy9pfWQff7inUwhNGcigJEkW55+qbBmsmSf6cqDixIn9fuSQBQH
 PthDdiiNUz4D/iTvdwIiqYSF4bOBEcEtNEnMc0a+AnCi3pn3ZNu/vkKVXATXpHwE
 fIc4SwdTzkMERF5e6RF+PCtBS4BeSo5m9HgrG94RCu074EQG0YWlBowHfo76KwTD
 DYwMeKoIHArWkmz18CmDDnNXxGfDbCY4HVveCrTIEUl/+wUo2u94omNDtChCcmlh
 biBXYXJuZXIgKGVtYWlsKSA8d2FybmVyQGxvdGhhci5jb20+iGAEExECACAFAkmt
 pzUCGwMGCwkIBwMCBBUCCAMEFgIDAQIeAQIXgAAKCRDUO0yccyJar1lvAKCGzZ4T
 VF7NbGc4wAmIKNuNjyn7zwCfYs6dcHujZY/C/846a87Ax7viCW25Ag0ESa2nNRAI
 AI9UFWTfqk/0ZgiBfkq/A8hsCl06oOhxjECLKt5dUmPzYio7YwL02xKfWH2geYx4
 v2/QSHBOjF1UX91Deb4MReepD7uMcybVv0368vAIbj9Mvb1MNXKDKy39wm3aGbuJ
 WCLsEawOo/nDbrmGcIGAAgQenP08peGZzvCKkoSNxnxc4Z4KrygqgQBNKxNFM3ZR
 /zOU9w8F9qV76WwcSHYpX290Vq5oL2WBdRy7lkI586Lubv0TbiIFN9ebuTGwcuYl
 jT1QdJby8Ux8DdJOhb5TiliZ17R1C/M7290Gf7xZ4/CM01ty80oi25w8AoW0AjBL
 FuPu0twR4UfSy5EYFlg6g0sAAwYH/3m3BQHWMHcXqgLBh38V8cn4qSuNZEAkw4Mp
 HgDUJJJhWgV9HA4rU3TMBoR5IVcvSYn71tCJTgVzDq+Aid6PbOp5ovz9B8toKKmu
 1vDzdd8NXSH0ymI1oPOL2GZ3Cge7WRkq7yGMfsoRGA87ObS/Siji6vwTSPx9rOc9
 IhObIpNns9cdYqijXWtGDrmHw/VrNfd5hsgjg1ElWgnWoU4TEwNBxlp/XBLnUExf
 PmX2/up6/h3eAD7LfE47e2pmSfWeOSNfve42Fgevl7vf/7fHYaYP3hdnY8tO8Fvy
 8XPwC1yuCQaOYRBTW9mXA98kttRPd4c+LUpIGILBxyDWUubXFiuISQQYEQIACQUC
 Sa2nNQIbDAAKCRDUO0yccyJar7oqAJ9PWosueCwCt8dXD2TO0h5hNXwY8gCfTlMw
 qfNtn6X8Gm0dRHQm2j1UhtCZAQ0ETX+nlwEIAL+XBjMjo1reeuHxUhFYNgBk1hlu
 Jl39Co1oPsFLLKM4zUR5/m6ooqcltsiBxE5waOlX+ha1evKxd7ykY6AM8QFcjq4l
 CGWbvSlO57493t5PlWBAyCBUc0WK15ZH6vcPPbvYPuW5tZDkiL3VrQcb9MsZ3CYE
 0UWrFlpc22kYT+9QrgX1fGNtVgEp/ZTbWzfBoMAW7i6ZGstDB38zI7D+RMkenQDn
 Mjvt8+jj1XaDfw/7OTPnBmwCGw9sE3JgXbfLW1jUsURBbCYz1tNwVA/DOrMiVsdw
 1eoezHlFdqmujAeAsm4PEQaoSDD30H4qah6TIPYEU6d1bWLFEGhczsHaLzMAEQEA
 AbQvRGF2aWQtU2FyYWggSG9wd29vZCA8ZGF2aWQtc2FyYWhAamFjYXJhbmRhLm9y
 Zz6JAT4EEwECACgFAk1/p5cCGyMFCQlmAYAGCwkIBwMCBhUIAgkKCwQWAgMBAh4B
 AheAAAoJEAZ/SSCYzydiSwMH+wW4St0+QHHplPLk1arm0osCSxxFnXTTllu7bhuN
 M9GOjw+5d9Ns1NU2Za8G9oQ0p2Zk2htnS5f8vMk8p/UJDU84V0WntjSjcFToEW0r
 EtTxNfcNDdN0ZMUM9GOIrq7rkFVMtsgL+cKmB84kU6K5oxAHdoRsLg5IQgcAAfVZ
 /uZ+l6Huoxx7u/rDCG7CWlRqCXbfvCv9BREYHmDMC+MStwnklOT6xeRvPj34ryTO
 fhnMuSZAQlTtqXJku9ewrlJWdJCFu2+IhjXwQN1Abhbzprgp6A4Hzn5aot1njrjd
 /O2JKi/L8N2JSH/6xZzcbcDi2ub5au5T3/c0sso4+1+VXCe5AQ0ETX+nlwEIAKrt
 IH+d59ZShS1mtLim8dz+Mh/uM8aU2AmJSULht4IKpf1DfcnWp5Nz6V4slvqKpBr5
 TvJbKhPmI62hhzudUwNvsNTsCESolcgEoSmNMzEjwb1IK1h+GKNa5KEF/pPxCfg1
 yhA8ercRgaj8ss1Py0h/5/Y7sWCqEPHPujb0QGiNzSik1caSIXK2cieNqdLaz3+Q
 6cPLzyOip5ZLxAoD7ae2fWUIUAEa7qCbAkh9GWw5Lv4RT8c+Gm5SINnpywHyoDNC
 e2cU4/3xWhPrGdgADMU8DWHFgN8FKOpWMrLqhVXbh45d8JvoGYyx1AfAVaFiQJsi
 e4z3waQlyf2tqmXPfH8AEQEAAYkBJQQYAQIADwUCTX+nlwIbDAUJCWYBgAAKCRAG
 f0kgmM8nYteMCACnD6PGPZnbspvQ2xAQAEK8b+Pq2jT6GQjrGoz8rthtcgj8PNCt
 +9gsah2vOV+HCzZ2vWfqZ7uegtfA/AoJQUnLY5cAxet/8fLmLRsJrBj3bDDQiGlL
 KL79JkcWyDZn6PZfrTdqg6rkjdLD4J56V50R5Yc7RWUnKcsdHldIEK2pB9lZjEQX
 cFVcN5q6ra0tE+Yj4xTqBQV049UHj/Qzci+FfyT+FIVbRvMA0cE159dvd3QpKADD
 WpONiXK3XNSmO6faiJ/dL2mLzJfg8CwmrosYowG4XzY3cAHNDWdc77WVpyAs2B5T
 YUmeq28HKjmhVVptvfN4Ik+VV2XPo6PW1XaTmQSuBE4Ds6ARDADcHG/8jznjC275
 /cuDLUSKpcZqOMNf+A+ASw8LK895xoLJaySvYMbPzFpY+OO+VY8clw/c7NVnNUOs
 n2QprL02slTyN/+v1X9rnz0XsHI8G3dfZwTWYoxVdCosgEeaoinQLpn8OX2p+KVw
 J6llzYKBbDKnlcMFMarlzKFeHfT4z8Zg9XMtHXkjxCCQTfOwHgZWxmQSvQcmK5EN
 Dui7oRJQkPTdcTxMUe4gaCcuwQL7hHsaSfaDeX/mGoo7gNn9mPy/VrcHBNEZtWcQ
 C2KSVJpdyOAGZ4i6qzExWyWL72+/PO1dGttYh2+2hHDyXDMdaF0E01yOkQ8zX6GR
 zzLQIftnZvk7gj34ITouulTGwPGgF5X7JTpm+UVxPiZJdk4Q+XH3oUgzP8uiZbSY
 oVO+tgSForlmFAUYkB+N5M1wPxA3/6mVVomb64roK7QO+Wy7tkpZAdJsQU1h/cec
 sfu/y+UbIafJAUk6oBRdjxBRV3cKWvbG44ShUHo2jD8XSwNCdp8BAIAyGSN6qAW2
 Ai9FSZ4CDhD6fhiuiubtn4wXbS3ZHtXtDACPel5qDFdh6UM1ayvIgrihIucAV3b7
 2ruy+XR28Ep5KMIk/MTwynAkNZRXrH4C9HF2emYYOxBw1Q0XiR3qneI9/mV18P0x
 7D/0NCeMzNPfavXFncEWVpVuUAsVp9aJU5FiCnMtozg/Xep3LD4hngSIg9P33q+I
 nVaPnBSUPtIBdIkcNq5n3R9TDTbr5XaZzd3A+VJcQios3S4yh4Hdzy4OR24L7BE5
 GqfEF/irKqKd9jZAS2wQMY1dW/yGOPKSoaALSV4cIpyugBhtO2Ub4fWQ5jGAhSHz
 uj1M6IbsB/z/nMkM0uxqJH1EMbWWVJwaFcMbLhsvTnigwYwrHWzNVCpGRcedsBTz
 fZMIzUFEdZyde9LlbYEP3KEBVo+I+Sdv+aPvo336T8L4RO9Aqr0ONU3/PV8MnLVu
 fwbzwMFaQrLxQn7kBRsGLYWY3SDdugQ0P7HonMTFpASgnZtOUqvXavoJoyrgIKGD
 1/8iRhBhmzNU4Hi28mKN5oDU4S7OfCW/OL8L/2P3uwmTpK9yKxAmgdQlm600wufO
 S8HbIOK+hNz88SCYBniHR7jbDegQx+XNZuSRQisjyCoO7scv5p51/O35qzs6aBSd
 gTIWH0AkUiDg3HJH1P1MXgYO38JikX+0zks3o50ESwF2U75FPw4Ys9kt0Xv9UuBN
 +lx3MyF3CX9ZoPtClP7PCtKl6pL7W0iMndSnGxMst8pgqvXwHMA4b9rC1rO+8ByG
 v5uYy65HIXIjHjf5RXFwXvdnz7Vt0iZqbMyyNGHkvQO/QMWRN7q+JTD9o+lxSkRT
 haKVqhimdggqtF2TSytwsXn/gax5hTqHvL4bpIjvP+m+ZTPzAm9eON+PmRZtkod2
 xCHx3r7HU9CcVvZZ7HrMG1hEg2BPZgxpNqUoydzTIVVqZABgRyIZt0S7o8PDpxU8
 7sN15GwVaWee7Yp05GifbYCMRw7s3bXKTT/U3iDvoXZNQ8NyVg4Yw46sFlcpIGoD
 VP76yeIWdcA2PhPLqfT8YgNhF2zH2UmpPD04dbQtS2V2YW4gQ2Fyc3RlbnNlbiA8
 a2FjYXJzdGVuc2VuQGNzdXBvbW9uYS5lZHU+iIAEExEIACgFAk4Ds6ACGwMFCQHh
 M4AGCwkIBwMCBhUIAgkKCwQWAgMBAh4BAheAAAoJEI5rIQYkJdeum7IA/j56gW+h
 zpqkKkzsZAnvJw0GX1R8KI3Ppai6Yn3sfUtoAP46mY+UxDf89AOhgOIe2ABJtJWb
 385WIv4A/nTnnQT6QrkDDQROA7OgEAwAw/mLuVT7T+ooC2DLbPy9kQKHlyxQeJNR
 gBsVdh41QGOXOcsCUJ/6jtlpFJ+/PByTHLr6tL3z9cYyddp0mNpS3NV0+6eHpopV
 1SAhHEBPlJuCtTFWj5BhXTqEHMkf12bGX8kBwJgpNcXJ4JOCItM8q7yVNUkr3988
 xl2fUCVTT+vRw4N8KQUKy4rGpg3Vcp/QZwpNNrUyazo1VstcSfkIWImSVobeBuXT
 lCBozL0wZgB/WEH/9cXzLIJJbUBTxNaWXJmPXDR8CW/QUy/baQWUXui9OGyldqLL
 zJwWZp7Jw9i4XtgyXVMswNQJI9au+q9l8PCtZyZyM9CPznqBZ4Y371NMxle70e9q
 HjhfAqUdr5k7jDmSSKwLIyZGGK0VqLTetgLCUH2eld1PnrUastP3NHbxJuh8oa7C
 ZAt9y6HXi6hceUhV8/W1fPYxaE4Wj6E8Vlwzy7qqNzhygVZzE1B2A5uvNb+dVV+M
 x8s6b6EnkOPtRCUqB+SDDHfDQF3Y3AmPAAQNC/9PZ9SSb5YkH0DGrN4eSixn6J99
 H2QsmO/e/dZEVyouRKmPehBcxyibqL0u9wzloJx0t5obFDgY7h02aAN3VUIEQL2V
 bf6Ol3n63TrKXX3INRfY9h2in42W1ba/p8BTj0vboZN+vRsadnODMiZZV1WF3uZw
 rXAHvjuGBbLEeZZB92DyVqCtmZN18AFlxxhfgZfoeyKXBtjImX64lfx2SE3YBfTu
 KyBgVJDhc8hljf5msnUEj3cQGu8f5K0e47Hwf5+IB6jhA0bzyPZVKQ63G05QWmnZ
 fs+XvNUykVcAAxOsXiTIRQvPQR/aLrQKtapNDEDtgT8FsANlEtHUjPi0JvE0gS/p
 +4+p3YOyK8VNgj7Yq2XI2BC7ZzHn2KACLkfhz7YbpnRDf6toCvaw14XVpBegY/l+
 q4FHEW7rOjtwNSF8jj/qWoN01mfjHQtaOY33c1jeuMsrwq69aYAHsFszaGaappe+
 q7A4NGrlmha7M7ssC5ArbpvTvJ6Djr3DuJ6DdgOIZwQYEQgADwUCTgOzoAIbDAUJ
 AeEzgAAKCRCOayEGJCXXriR4AP9YVdXBtZZHCjfuT+6CU09nvPvLeOf1vWa+t2Rr
 767UpAD/Sukn7pceESBqLMLOPDfgEoYLJ7/ZjPJDEmYRDnXG5JE=
 =EbMb
 - -----END PGP PUBLIC KEY BLOCK-----
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)

 iEYEARECAAYFAk8KjpAACgkQXyL0KCQr6F/PUACfb9EZeqIyehgB7wSoZqHvRgJn
 vIIAoMwVD3cKaJfuwI6KEAURD0to+qAT
 =XB1s
 -----END PGP SIGNATURE-----

--

-- 
Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/1654#comment:1>
tahoe-lafs <https://tahoe-lafs.org>
secure decentralized storage

More information about the tahoe-lafs-trac-stream mailing list