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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.1526.2 linux security update 28 June 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Debian Operating System: Debian GNU/Linux 8 Debian GNU/Linux 9 Impact/Access: Root Compromise -- Existing Account Denial of Service -- Remote/Unauthenticated Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2017-1000364 CVE-2017-9242 CVE-2017-9077 CVE-2017-9076 CVE-2017-9075 CVE-2017-9074 CVE-2017-8925 CVE-2017-8924 CVE-2017-8890 CVE-2017-8064 CVE-2017-7895 CVE-2017-7645 CVE-2017-7487 CVE-2017-0605 Reference: ESB-2017.1304 ESB-2017.1179 Original Bulletin: http://www.debian.org/security/2017/dsa-3886 Revision History: June 28 2017: The security update announced as DSA-3886-1 caused regressions for some applications using Java - including jsvc, LibreOffice and Scilab - due to the fix for CVE-2017-1000364. June 20 2017: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - - ------------------------------------------------------------------------- Debian Security Advisory DSA-3886-2 security@debian.org https://www.debian.org/security/ Salvatore Bonaccorso June 27, 2017 https://www.debian.org/security/faq - - ------------------------------------------------------------------------- Package : linux Debian Bug : 865303 The security update announced as DSA-3886-1 caused regressions for some applications using Java - including jsvc, LibreOffice and Scilab - due to the fix for CVE-2017-1000364. Updated packages are now available to correct this issue. For reference, the relevant part of the original advisory text follows. CVE-2017-1000364 The Qualys Research Labs discovered that the size of the stack guard page is not sufficiently large. The stack-pointer can jump over the guard-page and moving from the stack into another memory region without accessing the guard-page. In this case no page-fault exception is raised and the stack extends into the other memory region. An attacker can exploit this flaw for privilege escalation. The default stack gap protection is set to 256 pages and can be configured via the stack_guard_gap kernel parameter on the kernel command line. Further details can be found at https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt For the oldstable distribution (jessie), this problem has been fixed in version 3.16.43-2+deb8u2. For the stable distribution (stretch), this problem has been fixed in version 4.9.30-2+deb9u2. We recommend that you upgrade your linux packages. Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org - -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEERkRAmAjBceBVMd3uBUy48xNDz0QFAllSsjxfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldDQ2 NDQ0MDk4MDhDMTcxRTA1NTMxRERFRTA1NENCOEYzMTM0M0NGNDQACgkQBUy48xND z0Q7Bw//Sdd+3lkJjSOUvuFOVpyrXR6zGgCW4+iQEDkTtfit5NZ5Uwa+89gQ3akJ CRvYJ55aCVc/LCrBpxaGhI0lb8kUSK4dLFTPnC+zm5SJF4XbXCCYhS3+UAC85Imo ElRMySUDEmbHLsnUvdcWAjcBmgV06asT2Ia+QsaGajLMf/+5reDI1D/MNXb8AI8M mnCgSOIlSy4neZTxKwmyYHtdMfrKMTYbXMG9zUfrM7jsOfbn6KvsaPWTdP1+5EBO lPrHrNkVzA8VUrO9sje82/kLpfl4cYPYlEoQfaXQUogrKuvMkJ0gOn858OqdD038 nbItnvdcmbHsFMckhykOOheL3Iin3QxOWHBK93MZCZseubNAphrkqFV5+omki5eD +M1UkvR15dPBilub0l+a8cVUIO2TY2yJSSaDZgTEPepuyTbOxCc0hvwNoqdG0hH6 gD6edfWJ1TNiDVD1pW9SGRF0QIf+HyoKhEVGyuJfJQtRe4hdgCcKxu2VAGbpdqul qIlu4UaQhzclx4P2urIRR+HRMX6K61IAj3mxuItUkP+Xa+xxTby2soGRH6Q9IMHc iqgdYZmmWe3gc21I8BaKclefDP8tNJgHiLr7j+CwQawzuj3lWHJ9ZmXx0EfU1VJT ZYbZthQ7XChu5fI6uRfmGWMocE3700HzQDtb6/NFRnsElxlx5L4= =VAqb - -----END PGP SIGNATURE----- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - - ------------------------------------------------------------------------- Debian Security Advisory DSA-3886-1 security@debian.org https://www.debian.org/security/ Salvatore Bonaccorso June 19, 2017 https://www.debian.org/security/faq - - ------------------------------------------------------------------------- Package : linux CVE ID : CVE-2017-0605 CVE-2017-7487 CVE-2017-7645 CVE-2017-7895 CVE-2017-8064 CVE-2017-8890 CVE-2017-8924 CVE-2017-8925 CVE-2017-9074 CVE-2017-9075 CVE-2017-9076 CVE-2017-9077 CVE-2017-9242 CVE-2017-1000364 Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. CVE-2017-0605 A buffer overflow flaw was discovered in the trace subsystem. CVE-2017-7487 Li Qiang reported a reference counter leak in the ipxitf_ioctl function which may result into a use-after-free vulnerability, triggerable when a IPX interface is configured. CVE-2017-7645 Tuomas Haanpaa and Matti Kamunen from Synopsys Ltd discovered that the NFSv2 and NFSv3 server implementations are vulnerable to an out-of-bounds memory access issue while processing arbitrarily long arguments sent by NFSv2/NFSv3 PRC clients, leading to a denial of service. CVE-2017-7895 Ari Kauppi from Synopsys Ltd discovered that the NFSv2 and NFSv3 server implementations do not properly handle payload bounds checking of WRITE requests. A remote attacker with write access to a NFS mount can take advantage of this flaw to read chunks of arbitrary memory from both kernel-space and user-space. CVE-2017-8064 Arnd Bergmann found that the DVB-USB core misused the device logging system, resulting in a use-after-free vulnerability, with unknown security impact. CVE-2017-8890 It was discovered that the net_csk_clone_lock() function allows a remote attacker to cause a double free leading to a denial of service or potentially have other impact. CVE-2017-8924 Johan Hovold found that the io_ti USB serial driver could leak sensitive information if a malicious USB device was connected. CVE-2017-8925 Johan Hovold found a reference counter leak in the omninet USB serial driver, resulting in a use-after-free vulnerability. This can be triggered by a local user permitted to open tty devices. CVE-2017-9074 Andrey Konovalov reported that the IPv6 fragmentation implementation could read beyond the end of a packet buffer. A local user or guest VM might be able to use this to leak sensitive information or to cause a denial of service (crash). CVE-2017-9075 Andrey Konovalov reported that the SCTP/IPv6 implementation wrongly initialised address lists on connected sockets, resulting in a use-after-free vulnerability, a similar issue to CVE-2017-8890. This can be triggered by any local user. CVE-2017-9076 / CVE-2017-9077 Cong Wang found that the TCP/IPv6 and DCCP/IPv6 implementations wrongly initialised address lists on connected sockets, a similar issue to CVE-2017-9075. CVE-2017-9242 Andrey Konovalov reported a packet buffer overrun in the IPv6 implementation. A local user could use this for denial of service (memory corruption; crash) and possibly for privilege escalation. CVE-2017-1000364 The Qualys Research Labs discovered that the size of the stack guard page is not sufficiently large. The stack-pointer can jump over the guard-page and moving from the stack into another memory region without accessing the guard-page. In this case no page-fault exception is raised and the stack extends into the other memory region. An attacker can exploit this flaw for privilege escalation. The default stack gap protection is set to 256 pages and can be configured via the stack_guard_gap kernel parameter on the kernel command line. Further details can be found at https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt For the oldstable distribution (jessie), these problems have been fixed in version 3.16.43-2+deb8u1. For the stable distribution (stretch), these problems have been fixed in version 4.9.30-2+deb9u1 or earlier versions before the stretch release. We recommend that you upgrade your linux packages. Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org - -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEERkRAmAjBceBVMd3uBUy48xNDz0QFAllH7wxfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldDQ2 NDQ0MDk4MDhDMTcxRTA1NTMxRERFRTA1NENCOEYzMTM0M0NGNDQACgkQBUy48xND z0R38w/+MgLDpftRSRxAsR0QMJwt89Kmp8aw4X8NnUF2epaR0gSERD45BB9iB8Em 0QsP0hPqJZwmTDelo54EOKuJjcXEtAgHBLBAJj7AvGIJz1MKiJcsUQJItVUr6itA KjJtab8IFYkXxg3aL3UiSed0+eWO+ODNuFk251/dvdYLv/IRGXfep24978ktM1mj Gykywmvr9eOaSlRfr/cHYuO6v0No5wL8OGiPM+abl9i8lN/dXxllEEQEUm+me6O6 pnrBk0bGOh3fQS/lqhiv4q/T3V5ux56jgj/iu4L3YF3Neui/oc1Ip8wTPGhj/JuJ 4rwjoHSXRSLtHHModfL3O92Atu5n74ZjpbCpZnu/BMxwcqq8NxrOpht1dbB77auM vkVtcKY7/fmlwgkbK2KQGmLmzcSxXN9GymR26DAVZbetWyLDoxkIrPJeamWK2I+T A+cDBnx2QEzXazi7H73CqLREp11AndWRIqnHs1urVfa6Q3RUQG7zwg7MCEMP0vhv qFsXLW3B6kNQPa9ptM+Y/cNHz4+5GfEI5eeoEQ4pw+4uopxRhCJwQ0/SiaSXG1vZ 2Pj9U0qOo7iDLCAKDWFDdCze4msPyOBoNKcxkbTz+EB5RQy3amXbexavjmXcWZ/4 GfRnMkwwFVlIN1rF9Vu/ehhi8iYDilL8+3gVgX2QyKlHYbS30dg= =cr+H - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWVMTZIx+lLeg9Ub1AQioKw/+Kky8AlZwoFjZAAY2EFok+Jo6P9Lh/DHv CUYj14hWKaLg09W8yp8EASYg1aMgzvcJHTUPzWuhe67SV06c8DkWePIMEt4optpL KOhyf70N1UfvO3GsH2ox18Q0dyyiJvy+t6l+UOv0pfFsVyUfvfui7PbiMek7VKRF I+VgNXyMcpHiF6fXSPHMKfoJyEqG+nKbSh5xlffNsNtH7u7fBHmjGEK0Ii0RFvWg IzRdAzyaRW1GBgYG/F8EI+dvXSyy00DDspUrwbtYk2sdKCPXpowPEidAIifJEWmp sWJ73zg6TFzLaBaIJJd/gFpR+idm2+RAQuHHvig8bCx2OTcSaz169GzbO/zCTzSW N832Ts67rj6kdFkW6a5apNs9fW/ubGB1z4Zci+0V1uWw1a4wokUoEwAv9F2T+oAk 3n028Fcef3u6QMxCJbETFt7zLx549e8HHgagkG1yrlLTUwSxYZrQHG/G97Q8QaG7 53lJlpwFbaKvEPjxZ/IPfd0tLLRuxdwsHOGQunXUr3brf0XfB2NyneZ/lFna5Thl LQ18/hqopA0/dP6DeGSmLCP6ktqkhDsurDPJwxkqzNczJ6kJwqFGNQ0xeoW6VHpu Rak05BK+qPTmr/vpYg3OBe3wPHKFH62y8k6W/IbLOWaq/H6POt/1fbx9oWVgoHu2 UlPCDM7idoc= =S+Wn -----END PGP SIGNATURE-----