Linux Kernel CIFS String Conversion Multiple Vulnerabilities

Bugtraq ID:	34989
Class:	Boundary Condition Error
CVE:
Remote:	Yes
Local:	No
Published:	May 14 2009 12:00AM
Updated:	May 15 2009 06:06PM
Credit:	Jeff Layton
Vulnerable:	Linux kernel 2.6.30 -rc5 Linux kernel 2.6.30 -rc3 Linux kernel 2.6.30 -rc2 Linux kernel 2.6.30 -rc1 Linux kernel 2.6.29 .1 Linux kernel 2.6.29 -git8 Linux kernel 2.6.29 -git14 Linux kernel 2.6.29 -git1 Linux kernel 2.6.29 Linux kernel 2.6.28 .9 Linux kernel 2.6.28 .8 Linux kernel 2.6.28 .6 Linux kernel 2.6.28 .5 Linux kernel 2.6.28 .3 Linux kernel 2.6.28 .2 Linux kernel 2.6.28 .1 Linux kernel 2.6.28 -rc7 Linux kernel 2.6.28 -rc5 Linux kernel 2.6.28 -rc1 Linux kernel 2.6.28 -git7 Linux kernel 2.6.28 Linux kernel 2.6.27 6 Linux kernel 2.6.27 3 Linux kernel 2.6.27 12 Linux kernel 2.6.27 .8 Linux kernel 2.6.27 .5 Linux kernel 2.6.27 .5 Linux kernel 2.6.27 .14 Linux kernel 2.6.27 .13 Linux kernel 2.6.27 .12 Linux kernel 2.6.27 -rc8-git5 Linux kernel 2.6.27 -rc8 Linux kernel 2.6.27 -rc6-git6 Linux kernel 2.6.27 -rc6 Linux kernel 2.6.27 -rc5 Linux kernel 2.6.27 -rc2 Linux kernel 2.6.27 -rc1 Linux kernel 2.6.27 Linux kernel 2.6.26 7 Linux kernel 2.6.26 .6 Linux kernel 2.6.26 .4 Linux kernel 2.6.26 .3 Linux kernel 2.6.26 -rc6 Linux kernel 2.6.26 Linux kernel 2.6.25 19 Linux kernel 2.6.25 .9 Linux kernel 2.6.25 .8 Linux kernel 2.6.25 .7 Linux kernel 2.6.25 .6 Linux kernel 2.6.25 .5 Linux kernel 2.6.25 .15 Linux kernel 2.6.25 .13 Linux kernel 2.6.25 .12 Linux kernel 2.6.25 .11 Linux kernel 2.6.25 .10 Linux kernel 2.6.25 Linux kernel 2.6.25 Linux kernel 2.6.24 .2 Linux kernel 2.6.24 .1 Linux kernel 2.6.24 -rc5 Linux kernel 2.6.24 -rc4 Linux kernel 2.6.24 -rc3 Linux kernel 2.6.24 -git13 Linux kernel 2.6.24 Linux kernel 2.6.23 .7 Linux kernel 2.6.23 .6 Linux kernel 2.6.23 .5 Linux kernel 2.6.23 .4 Linux kernel 2.6.23 .3 Linux kernel 2.6.23 .2 Linux kernel 2.6.23 -rc2 Linux kernel 2.6.23 -rc1 Linux kernel 2.6.23 Linux kernel 2.6.22 .8 Linux kernel 2.6.22 .7 Linux kernel 2.6.22 .6 Linux kernel 2.6.22 .5 Linux kernel 2.6.22 .4 Linux kernel 2.6.22 .3 Linux kernel 2.6.22 .2 Linux kernel 2.6.22 .17 Linux kernel 2.6.22 .16 Linux kernel 2.6.22 .15 Linux kernel 2.6.22 .14 Linux kernel 2.6.22 .13 Linux kernel 2.6.22 .12 Linux kernel 2.6.22 .11 Linux kernel 2.6.22 .1 Linux kernel 2.6.22 Linux kernel 2.6.21 4 Linux kernel 2.6.21 .7 Linux kernel 2.6.21 .6 Linux kernel 2.6.21 .3 Linux kernel 2.6.21 .2 Linux kernel 2.6.21 .1 Linux kernel 2.6.21 -git8 Linux kernel 2.6.21 Linux kernel 2.6.20 .9 Linux kernel 2.6.20 .8 Linux kernel 2.6.20 .5 Linux kernel 2.6.20 .4 Linux kernel 2.6.20 .15 Linux kernel 2.6.20 .1 Linux kernel 2.6.20 -git5 Linux kernel 2.6.20 Linux kernel 2.6.20 + Trustix Secure Enterprise Linux 2.0 + Trustix Secure Linux 2.2 + Trustix Secure Linux 2.1 + Trustix Secure Linux 2.0 Linux kernel 2.6.19 .2 Linux kernel 2.6.19 .1 Linux kernel 2.6.19 .1 Linux kernel 2.6.19 -rc4 Linux kernel 2.6.19 -rc3 + Trustix Secure Enterprise Linux 2.0 + Trustix Secure Linux 2.2 + Trustix Secure Linux 2.1 + Trustix Secure Linux 2.0 Linux kernel 2.6.19 -rc2 + Trustix Secure Enterprise Linux 2.0 + Trustix Secure Linux 2.2 + Trustix Secure Linux 2.1 + Trustix Secure Linux 2.0 Linux kernel 2.6.19 -rc1 Linux kernel 2.6.19 + Trustix Secure Enterprise Linux 2.0 + Trustix Secure Linux 2.2 + Trustix Secure Linux 2.1 + Trustix Secure Linux 2.0 Linux kernel 2.6.18 .4 Linux kernel 2.6.18 .3 Linux kernel 2.6.18 .1 Linux kernel 2.6.18 Linux kernel 2.6.17 .9 Linux kernel 2.6.17 .8 Linux kernel 2.6.17 .7 Linux kernel 2.6.17 .6 Linux kernel 2.6.17 .5 Linux kernel 2.6.17 .4 Linux kernel 2.6.17 .3 Linux kernel 2.6.17 .2 Linux kernel 2.6.17 .14 Linux kernel 2.6.17 .13 Linux kernel 2.6.17 .12 Linux kernel 2.6.17 .11 Linux kernel 2.6.17 .10 Linux kernel 2.6.17 .1 Linux kernel 2.6.17 -rc5 Linux kernel 2.6.17 Linux kernel 2.6.17 Linux kernel 2.6.17 Linux kernel 2.6.17 Linux kernel 2.6.16 27 Linux kernel 2.6.16 13 Linux kernel 2.6.16 .9 Linux kernel 2.6.16 .8 Linux kernel 2.6.16 .7 Linux kernel 2.6.16 .5 Linux kernel 2.6.16 .4 Linux kernel 2.6.16 .3 Linux kernel 2.6.16 .23 Linux kernel 2.6.16 .21 Linux kernel 2.6.16 .2 Linux kernel 2.6.16 .19 Linux kernel 2.6.16 .18 Linux kernel 2.6.16 .17 Linux kernel 2.6.16 .16 Linux kernel 2.6.16 .12 Linux kernel 2.6.16 .11 Linux kernel 2.6.16 .1 Linux kernel 2.6.16 -rc1 Linux kernel 2.6.16 Linux kernel 2.6.16 Linux kernel 2.6.15 .6 Linux kernel 2.6.15 .4 Linux kernel 2.6.15 .3 Linux kernel 2.6.15 .2 Linux kernel 2.6.15 .1 Linux kernel 2.6.15 -rc6 Linux kernel 2.6.15 -rc5 Linux kernel 2.6.15 -rc4 Linux kernel 2.6.15 -rc3 Linux kernel 2.6.15 -rc2 Linux kernel 2.6.15 -rc1 Linux kernel 2.6.15 Linux kernel 2.6.15 + Trustix Secure Enterprise Linux 2.0 + Trustix Secure Linux 2.2 + Trustix Secure Linux 2.1 + Trustix Secure Linux 2.0 Linux kernel 2.6.14 .5 Linux kernel 2.6.14 .4 Linux kernel 2.6.14 .3 Linux kernel 2.6.14 .2 Linux kernel 2.6.14 .1 Linux kernel 2.6.14 -rc4 Linux kernel 2.6.14 -rc3 Linux kernel 2.6.14 -rc2 Linux kernel 2.6.14 -rc1 Linux kernel 2.6.14 Linux kernel 2.6.14 Linux kernel 2.6.13 .4 Linux kernel 2.6.13 .3 Linux kernel 2.6.13 .2 Linux kernel 2.6.13 .1 Linux kernel 2.6.13 -rc7 Linux kernel 2.6.13 -rc6 Linux kernel 2.6.13 -rc4 Linux kernel 2.6.13 -rc1 Linux kernel 2.6.13 Linux kernel 2.6.13 + Trustix Secure Enterprise Linux 2.0 + Trustix Secure Linux 2.2 + Trustix Secure Linux 2.1 + Trustix Secure Linux 2.0 Linux kernel 2.6.12 .6 Linux kernel 2.6.12 .5 Linux kernel 2.6.12 .4 Linux kernel 2.6.12 .3 Linux kernel 2.6.12 .22 Linux kernel 2.6.12 .2 Linux kernel 2.6.12 .12 Linux kernel 2.6.12 .1 Linux kernel 2.6.12 -rc5 Linux kernel 2.6.12 -rc4 Linux kernel 2.6.12 -rc1 Linux kernel 2.6.12 Linux kernel 2.6.12 Linux kernel 2.6.11 .8 Linux kernel 2.6.11 .7 Linux kernel 2.6.11 .6 Linux kernel 2.6.11 .5 Linux kernel 2.6.11 .4 Linux kernel 2.6.11 .12 Linux kernel 2.6.11 .11 Linux kernel 2.6.11 -rc4 Linux kernel 2.6.11 -rc3 Linux kernel 2.6.11 -rc2 Linux kernel 2.6.11 Linux kernel 2.6.11 Linux kernel 2.6.10 rc2 Linux kernel 2.6.10 Linux kernel 2.6.10 Linux kernel 2.6.9 Linux kernel 2.6.8 rc3 Linux kernel 2.6.8 rc2 Linux kernel 2.6.8 rc1 + Ubuntu Ubuntu Linux 4.1 ppc + Ubuntu Ubuntu Linux 4.1 ia64 + Ubuntu Ubuntu Linux 4.1 ia32 Linux kernel 2.6.8 Linux kernel 2.6.7 rc1 Linux kernel 2.6.7 Linux kernel 2.6.6 rc1 Linux kernel 2.6.6 Linux kernel 2.6.5 Linux kernel 2.6.4 Linux kernel 2.6.3 Linux kernel 2.6.2 Linux kernel 2.6.1 -rc2 Linux kernel 2.6.1 -rc1 Linux kernel 2.6.1 Linux kernel 2.6 .10 Linux kernel 2.6 -test9-CVS Linux kernel 2.6 -test9 Linux kernel 2.6 -test8 Linux kernel 2.6 -test7 Linux kernel 2.6 -test6 Linux kernel 2.6 -test5 Linux kernel 2.6 -test4 Linux kernel 2.6 -test3 Linux kernel 2.6 -test2 Linux kernel 2.6 -test11 Linux kernel 2.6 -test10 Linux kernel 2.6 -test1 Linux kernel 2.6 Linux kernel 2.6.8.1 + S.u.S.E. Linux Personal 9.2 x86_64 + S.u.S.E. Linux Personal 9.2 + Ubuntu Ubuntu Linux 4.1 ppc + Ubuntu Ubuntu Linux 4.1 ia64 + Ubuntu Ubuntu Linux 4.1 ia32 Linux kernel 2.6.29-rc2-git1 Linux kernel 2.6.29-rc2 Linux kernel 2.6.29-rc1 Linux kernel 2.6.28.4 Linux kernel 2.6.26.1 Linux kernel 2.6.26-rc5-git1 Linux kernel 2.6.25.4 Linux kernel 2.6.25.3 Linux kernel 2.6.25.2 Linux kernel 2.6.25.1 Linux kernel 2.6.24.6 Linux kernel 2.6.24-rc2 Linux kernel 2.6.24-rc1 Linux kernel 2.6.23.14 Linux kernel 2.6.23.10 Linux kernel 2.6.23.1 Linux kernel 2.6.23.09 Linux kernel 2.6.22-rc7 Linux kernel 2.6.22-rc1 Linux kernel 2.6.21-RC6 Linux kernel 2.6.21-RC5 Linux kernel 2.6.21-RC4 Linux kernel 2.6.21-RC3 Linux kernel 2.6.21-RC3 Linux kernel 2.6.20.3 Linux kernel 2.6.20.2 Linux kernel 2.6.20.13 Linux kernel 2.6.20.11 Linux kernel 2.6.20-rc2 Linux kernel 2.6.20-2 Linux kernel 2.6.18-8.1.8.el5 Linux kernel 2.6.18-53 Linux kernel 2.6.18 Linux kernel 2.6.15.5 Linux kernel 2.6.15.11 Linux kernel 2.6.15-27.48 Linux kernel 2.6.11.4 Debian Linux 4.0 sparc Debian Linux 4.0 s/390 Debian Linux 4.0 powerpc Debian Linux 4.0 mipsel Debian Linux 4.0 mips Debian Linux 4.0 m68k Debian Linux 4.0 ia-64 Debian Linux 4.0 ia-32 Debian Linux 4.0 hppa Debian Linux 4.0 armel Debian Linux 4.0 arm Debian Linux 4.0 amd64 Debian Linux 4.0 alpha Debian Linux 4.0
Not Vulnerable:

Linux Kernel CIFS String Conversion Multiple Vulnerabilities

The Linux Kernel is prone to multiple vulnerabilities affecting the CIFS (Common Internet File System) implementation.

Successfully exploiting these issues may allow remote attackers to execute arbitrary code with kernel-level privileges, resulting in the complete compromise of affected computers. Failed exploit attempts will result in a denial-of-service condition.

The issue affects Linux Kernel 2.6.29; other versions may also be vulnerable.

Linux Kernel CIFS String Conversion Multiple Vulnerabilities

Currently we are not aware of any working exploits. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

Linux Kernel CIFS String Conversion Multiple Vulnerabilities

Solution:
Reports indicate that fixes are available in the git repository. Please see the references for more information.

Linux Kernel CIFS String Conversion Multiple Vulnerabilities

References:

• [CIFS] Fix final user of old string conversion code (Steve French)
  
• [CIFS] NTLMSSP support moving into new file, old dead code removed (Steve French)
  
• [CIFS] Remove older session setup implementation (Steve French)
  
• [CIFS] Remove unneeded QuerySymlink call and fix mapping for unmapped status (Steve French)
  
• [CIFS] rename cifs_strndup to cifs_strndup_from_ucs (Steve French)
  
• ChangeLog-2.6.30-rc5 (Linux Kernel)
  
• cifs: add new function to get unicode string length in bytes (Jeff Layton)
  
• cifs: add replacement for cifs_strtoUCS_le called cifs_from_ucs2 (Jeff Layton)
  
• cifs: add replacement for cifs_strtoUCS_le called cifs_from_ucs2 (Jeff Layton)
  
• cifs: change cifs_get_name_from_search_buf to use new unicode helper (Jeff Layton)
  
• cifs: change CIFSSMBUnixQuerySymLink to use new helpers (Jeff Layton)
  
• cifs: convert CIFSTCon to use new unicode helper functions (Jeff Layton)
  
• cifs: fix length handling in cifs_get_name_from_search_buf (Jeff Layton)
  
• cifs: fix session setup unicode string saving to use new unicode helpers (Jeff Layton)
  
• cifs: fix unicode string area word alignment in session setup (Jeff Layton)
  
• cifs: Increase size of tmp_buf in cifs_readdir to avoid potential overflows (Suresh Jayaraman)
  
• cifs: move #defines for mapchars into cifs_unicode.h (Jeff Layton)
  
• cifs: rename cifs_strlcpy_to_host and make it use new functions (Jeff Layton)
  
• cifs: Rename cifs_strncpy_to_host and fix buffer size (Suresh Jayaraman)
  
• Linux kernel Homepage (kernel.org)
  
• nls: add a nls_nullsize inline (Jeff Layton)
  
• Re: Re: Update - Re: [oss-security] CVE request? buffer overflow in CIFS in 2.6. (Marcus Meissner)
  
• Update - Re: [oss-security] CVE request? buffer overflow in CIFS in 2.6.* (Eugene Teo)
  
• [CIFS] remove cifs_strfromUCS_le (Jeff Layton)