CVE-2010-4083
First published: Mon Nov 01 2010(Updated: )
Description of problem: The semctl syscall has several code paths that lead to the leakage of uninitialized kernel stack memory (namely the IPC_INFO, SEM_INFO, IPC_STAT, and SEM_STAT commands) during the use of the older, obsolete version of the semid_ds struct. The copy_semid_to_user() function declares a semid_ds struct on the stack and copies it back to the user without initializing or zeroing the 'sem_base', 'sem_pending', 'sem_pending_last', and 'undo' pointers, allowing the leakage of 16 bytes of kernel stack memory. The code is still reachable on 32-bit systems - when calling semctl() newer glibc's automatically OR the IPC command with the IPC_64 flag, but invoking the syscall directly allows users to use the older versions of the struct. Reference: <a href="http://www.openwall.com/lists/oss-security/2010/10/06/6">http://www.openwall.com/lists/oss-security/2010/10/06/6</a> <a href="http://www.spinics.net/lists/mm-commits/msg80234.html">http://www.spinics.net/lists/mm-commits/msg80234.html</a> Acknowledgements: Red Hat would like to thank Dan Rosenberg for reporting this issue.
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux-2.6 | ||
| Linux Linux kernel | <2.6.36 | |
| openSUSE openSUSE | =11.3 | |
| SUSE Linux Enterprise Desktop | =10-sp3 | |
| SUSE Linux Enterprise Desktop | =11-sp1 | |
| Suse Linux Enterprise Real Time Extension | =11-sp1 | |
| SUSE Linux Enterprise Server | =9 | |
| SUSE Linux Enterprise Server | =10-sp3 | |
| SUSE Linux Enterprise Server | =11-sp1 | |
| SUSE Linux Enterprise Software Development Kit | =10-sp3 | |
| Debian Debian Linux | =5.0 |
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Reference Links
- http://www.spinics.net/lists/mm-commits/msg80234.html
- http://www.openwall.com/lists/oss-security/2010/09/25/2
- http://www.openwall.com/lists/oss-security/2010/10/07/1
- http://www.openwall.com/lists/oss-security/2010/10/06/6
- http://www.openwall.com/lists/oss-security/2010/10/25/3
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=982f7c2b2e6a28f8f266e075d92e19c0dd4c6e56
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.36
- https://bugzilla.redhat.com/show_bug.cgi?id=648673
- http://www.debian.org/security/2010/dsa-2126
- http://www.redhat.com/support/errata/RHSA-2010-0958.html
- http://www.redhat.com/support/errata/RHSA-2011-0004.html
- http://www.redhat.com/support/errata/RHSA-2011-0162.html
- http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00004.html
- http://www.securityfocus.com/bid/43809
- http://secunia.com/advisories/42778
- http://secunia.com/advisories/42789
- http://secunia.com/advisories/42932
- http://secunia.com/advisories/42963
- http://www.vupen.com/english/advisories/2011/0012
- http://www.vupen.com/english/advisories/2011/0024
- http://www.vupen.com/english/advisories/2011/0124
- http://www.vupen.com/english/advisories/2011/0168
- http://www.redhat.com/support/errata/RHSA-2011-0007.html
- http://secunia.com/advisories/42890
- http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00002.html
- http://secunia.com/advisories/43291
- http://www.vupen.com/english/advisories/2011/0298
- http://www.vupen.com/english/advisories/2011/0375
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:051
- http://www.vmware.com/security/advisories/VMSA-2011-0012.html
- http://secunia.com/advisories/46397
- http://www.securityfocus.com/archive/1/520102/100/0/threaded
- https://launchpad.net/bugs/cve/CVE-2010-4083
- http://www.redhat.com/security/updates/errata
- http://git.kernel.org/linus/982f7c2b2e6a28f8f266e075d92e19c0dd4c6e56
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=649614
- https://rhn.redhat.com/errata/RHSA-2010-0958.html
- https://rhn.redhat.com/errata/RHSA-2011-0004.html
- https://rhn.redhat.com/errata/RHSA-2011-0007.html
- https://rhn.redhat.com/errata/RHSA-2011-0162.html
- https://security-tracker.debian.org/tracker/CVE-2010-4083
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=982f7c2b2e6a28f8f266e075d92e19c0dd4c6e56
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4083
- https://nvd.nist.gov/vuln/detail/CVE-2010-4083
- https://ubuntu.com/security/CVE-2010-4083
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