CVE-2010-4077: Infoleak
First published: Mon Nov 01 2010(Updated: )
Description of problem: The TIOCGICOUNT device ioctl in nozomi.c allows unprivileged users to read uninitialized stack memory, because the "reserved" member of the serial_icounter_struct struct declared on the stack is not altered or zeroed before being copied back to the user. 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://lkml.indiana.edu/hypermail//linux/kernel/1009.1/03387.html">http://lkml.indiana.edu/hypermail//linux/kernel/1009.1/03387.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 |
|---|---|---|
| Linux kernel | <=2.6.36.1 | |
| debian/linux-2.6 | ||
| Linux Kernel | <=2.6.36.1 |
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Reference Links
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d281da7ff6f70efca0553c288bb883e8605b3862
- http://www.openwall.com/lists/oss-security/2010/10/06/6
- http://www.openwall.com/lists/oss-security/2010/10/25/3
- http://www.openwall.com/lists/oss-security/2010/10/07/1
- http://lkml.indiana.edu/hypermail//linux/kernel/1009.1/03387.html
- http://www.openwall.com/lists/oss-security/2010/09/25/2
- https://bugzilla.redhat.com/show_bug.cgi?id=648663
- http://www.securityfocus.com/bid/45059
- http://www.redhat.com/support/errata/RHSA-2010-0958.html
- http://www.redhat.com/support/errata/RHSA-2011-0007.html
- http://secunia.com/advisories/42890
- http://securityreason.com/securityalert/8129
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d281da7ff6f70efca0553c288bb883e8605b3862
- http://git.kernel.org/linus/0587102cf9f427c185bfdeb2cef41e13ee0264b1
- https://rhn.redhat.com/errata/RHSA-2010-0958.html
- https://rhn.redhat.com/errata/RHSA-2011-0007.html
- https://launchpad.net/bugs/cve/CVE-2010-4077
- https://security-tracker.debian.org/tracker/CVE-2010-4077
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4077
- https://nvd.nist.gov/vuln/detail/CVE-2010-4077
- https://ubuntu.com/security/CVE-2010-4077
Frequently Asked Questions
What is the severity of CVE-2010-4077?
CVE-2010-4077 is considered to have a medium severity due to the potential for unprivileged users to access sensitive information.
How do I fix CVE-2010-4077?
To fix CVE-2010-4077, update your Linux kernel to a version later than 2.6.36.1 where this issue has been addressed.
Who is affected by CVE-2010-4077?
CVE-2010-4077 affects users of the Linux kernel versions up to and including 2.6.36.1.
What type of vulnerability is CVE-2010-4077?
CVE-2010-4077 is a memory disclosure vulnerability caused by uninitialized stack memory exposure.
Can CVE-2010-4077 be exploited remotely?
CVE-2010-4077 requires local access to the system to exploit, making remote exploitation unlikely.
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