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[Full-disclosure] [ MDVSA-2008:162 ] qemu

From: <security_at_nospam>
Date: Thu Aug 07 2008 - 23:55:00 GMT
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Mandriva Linux Security Advisory MDVSA-2008:162  http://www.mandriva.com/security/
Package : qemu Date : August 7, 2008 Affected: 2008.0, 2008.1

 Problem Description:

 Multiple vulnerabilities have been found in Qemu.  

 Multiple heap-based buffer overflows in the cirrus_invalidate_region  function in the Cirrus VGA extension in QEMU 0.8.2, as used in Xen and  possibly other products, might allow local users to execute arbitrary  code via unspecified vectors related to attempting to mark non-existent  regions as dirty, aka the bitblt heap overflow. (CVE-2007-1320)  

 Integer signedness error in the NE2000 emulator in QEMU 0.8.2,  as used in Xen and possibly other products, allows local users to  trigger a heap-based buffer overflow via certain register values  that bypass sanity checks, aka QEMU NE2000 receive integer signedness  error. (CVE-2007-1321)  

 QEMU 0.8.2 allows local users to halt a virtual machine by executing  the icebp instruction. (CVE-2007-1322)  

 QEMU 0.8.2 allows local users to crash a virtual machine via the  divisor operand to the aam instruction, as demonstrated by aam 0x0,  which triggers a divide-by-zero error. (CVE-2007-1366)  

 The NE2000 emulator in QEMU 0.8.2 allows local users to execute  arbitrary code by writing Ethernet frames with a size larger than  the MTU to the EN0_TCNT register, which triggers a heap-based  buffer overflow in the slirp library, aka NE2000 mtu heap  overflow. (CVE-2007-5729)  

 Heap-based buffer overflow in QEMU 0.8.2, as used in Xen and possibly  other products, allows local users to execute arbitrary code via  crafted data in the net socket listen option, aka QEMU net socket  heap overflow. (CVE-2007-5730)  

 QEMU 0.9.0 allows local users of a Windows XP SP2 guest operating  system to overwrite the TranslationBlock (code_gen_buffer) buffer,  and probably have unspecified other impacts related to an overflow,  via certain Windows executable programs, as demonstrated by  qemu-dos.com. (CVE-2007-6227)  

 Qemu 0.9.1 and earlier does not perform range checks for block  device read or write requests, which allows guest host users with  root privileges to access arbitrary memory and escape the virtual  machine. (CVE-2008-0928)  

 Changing removable media in QEMU could trigger a bug similar to  CVE-2008-2004, which would allow local guest users to read arbitrary  files on the host by modifying the header of the image to identify  a different format. (CVE-2008-1945) See the diskformat: parameter to  the -usbdevice option.  

 The drive_init function in QEMU 0.9.1 determines the format of  a raw disk image based on the header, which allows local guest  users to read arbitrary files on the host by modifying the header  to identify a different format, which is used when the guest is  restarted. (CVE-2008-2004) See the -format option.  

 The updated packages have been patched to fix these issues.

 References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1320 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1321 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1322 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1366 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5729 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5730 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6227 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0928 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1945 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2004

 Updated Packages:

 Mandriva Linux 2008.0: 702e54aaf211941953f9aab4aef4f463 2008.0/i586/dkms-kqemu-1.3.0-0.pre11.13.2mdv2008.0.i586.rpm b1d7cb1057953d7c63c528fdf1034b3a 2008.0/i586/qemu-0.9.0-16.2mdv2008.0.i586.rpm f1b73fffef10c952f641d922ad626dd4 2008.0/i586/qemu-img-0.9.0-16.2mdv2008.0.i586.rpm 396f94f5b918a8a71d3a6575a9f5ca0b 2008.0/SRPMS/qemu-0.9.0-16.2mdv2008.0.src.rpm

 Mandriva Linux 2008.0/X86_64: f767f76399a5994234d697dbc3f7926a 2008.0/x86_64/dkms-kqemu-1.3.0-0.pre11.13.2mdv2008.0.x86_64.rpm 1e2613cc2158e1c30563585e16857e8c 2008.0/x86_64/qemu-0.9.0-16.2mdv2008.0.x86_64.rpm 63522aa3e6740fbed3b222e71018ffcd 2008.0/x86_64/qemu-img-0.9.0-16.2mdv2008.0.x86_64.rpm 396f94f5b918a8a71d3a6575a9f5ca0b 2008.0/SRPMS/qemu-0.9.0-16.2mdv2008.0.src.rpm

 Mandriva Linux 2008.1: 1079fe4cb3f742411a2593f2aaed799c 2008.1/i586/dkms-kqemu-1.3.0-0.pre11.15.2mdv2008.1.i586.rpm 7e999da7698373e37e40866b32703a75 2008.1/i586/qemu-0.9.0-18.2mdv2008.1.i586.rpm e85fc2c051a7297488fa85d4ec8a7498 2008.1/i586/qemu-img-0.9.0-18.2mdv2008.1.i586.rpm 0495e75ea6296856fb24a3eaea8add4b 2008.1/SRPMS/qemu-0.9.0-18.2mdv2008.1.src.rpm

 Mandriva Linux 2008.1/X86_64: 0a06c81553ad1068570c3e6d12a1d47a 2008.1/x86_64/dkms-kqemu-1.3.0-0.pre11.15.2mdv2008.1.x86_64.rpm 04579bc4358470ddb829be94dcd39db0 2008.1/x86_64/qemu-0.9.0-18.2mdv2008.1.x86_64.rpm c4dd1da01c083fcbb72281e2d37470c4 2008.1/x86_64/qemu-img-0.9.0-18.2mdv2008.1.x86_64.rpm 0495e75ea6296856fb24a3eaea8add4b 2008.1/SRPMS/qemu-0.9.0-18.2mdv2008.1.src.rpm

 To upgrade automatically use MandrivaUpdate or urpmi. The verification  of md5 checksums and GPG signatures is performed automatically for you.

 All packages are signed by Mandriva for security. You can obtain the  GPG public key of the Mandriva Security Team by executing:

  gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98

 You can view other update advisories for Mandriva Linux at:


 If you want to report vulnerabilities, please contact


 Type Bits/KeyID Date User ID
 pub 1024D/22458A98 2000-07-10 Mandriva Security Team   <security*mandriva.com>
Version: GnuPG v1.4.9 (GNU/Linux)

iD8DBQFIm18fmqjQ0CJFipgRAqFxAJ9ff65+SYEZ6E4pctg1SyWqfgakqQCg9JTJ 62TpG1IUfuDqNPJu8t0iRzc=

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