CVE-2010-3858
First published: Thu Oct 21 2010(Updated: )
Description of problem: The CONFIG_STACK_GROWSDOWN variant of setup_arg_pages() does not check the size of the argument/environment area on the stack. When it is unworkably large, shift_arg_pages() hits its BUG_ON. This is exploitable with a very large RLIMIT_STACK limit, to create a crash pretty easily. Check that the initial stack is not too large to make it possible to map in any executable. We're not checking that the actual executable (or intepreter, for binfmt_elf) will fit. So those mappings might clobber part of the initial stack mapping. But that is just userland lossage that userland made happen, not a kernel problem. Upstream commit: <a href="http://git.kernel.org/linus/1b528181b2ffa14721fb28ad1bd539fe1732c583">http://git.kernel.org/linus/1b528181b2ffa14721fb28ad1bd539fe1732c583</a> Reference: <a href="http://grsecurity.net/~spender/64bit_dos.c">http://grsecurity.net/~spender/64bit_dos.c</a> Acknowledgements: Red Hat would like to thank Brad Spengler for reporting this issue.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux-2.6 | ||
| Linux kernel | <2.6.36 | |
| Debian | =5.0 | |
| Ubuntu Linux | =9.10 | |
| Ubuntu Linux | =10.04 | |
| Ubuntu Linux | =10.10 | |
| Linux Kernel | <2.6.36 | |
| Ubuntu | =9.10 | |
| Ubuntu | =10.04 | |
| Ubuntu | =10.10 |
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Reference Links
- http://www.securityfocus.com/bid/44301
- https://bugzilla.redhat.com/show_bug.cgi?id=645222
- http://grsecurity.net/~spender/64bit_dos.c
- http://www.openwall.com/lists/oss-security/2010/10/22/4
- http://www.exploit-db.com/exploits/15619
- http://www.openwall.com/lists/oss-security/2010/10/21/1
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.36
- http://www.redhat.com/support/errata/RHSA-2010-0958.html
- http://www.debian.org/security/2010/dsa-2126
- http://www.redhat.com/support/errata/RHSA-2011-0004.html
- http://secunia.com/advisories/42758
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:257
- http://www.vupen.com/english/advisories/2011/0070
- http://www.ubuntu.com/usn/USN-1041-1
- http://secunia.com/advisories/42789
- http://www.vupen.com/english/advisories/2011/0024
- http://secunia.com/advisories/46397
- http://www.vmware.com/security/advisories/VMSA-2011-0012.html
- http://www.securityfocus.com/archive/1/520102/100/0/threaded
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1b528181b2ffa14721fb28ad1bd539fe1732c583
- http://git.kernel.org/linus/1b528181b2ffa14721fb28ad1bd539fe1732c583
- https://rhn.redhat.com/errata/RHSA-2010-0958.html
- https://rhn.redhat.com/errata/RHSA-2011-0004.html
- https://rhn.redhat.com/errata/RHSA-2011-0836.html
- https://launchpad.net/bugs/cve/CVE-2010-3858
- https://security-tracker.debian.org/tracker/CVE-2010-3858
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-3858
- https://nvd.nist.gov/vuln/detail/CVE-2010-3858
- https://ubuntu.com/security/CVE-2010-3858
Frequently Asked Questions
What is the severity of CVE-2010-3858?
CVE-2010-3858 is considered a high severity vulnerability as it can lead to a denial of service through a system crash.
How do I fix CVE-2010-3858?
To fix CVE-2010-3858, it is recommended to upgrade to a version of the Linux kernel that is higher than 2.6.36.
Which versions of Linux are affected by CVE-2010-3858?
CVE-2010-3858 affects the Linux kernel versions up to and including 2.6.36, as well as specific Debian and Ubuntu distributions.
What type of exploitation vector is associated with CVE-2010-3858?
CVE-2010-3858 can be exploited by setting a very large RLIMIT_STACK limit, allowing attackers to cause a crash.
Is there a known proof of concept for CVE-2010-3858?
Yes, there is a known proof of concept for CVE-2010-3858 that demonstrates the denial of service attack vector.
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