CVE-2015-3214

Public Exploit

Description

The pit_ioport_read in i8254.c in the Linux kernel before 2.6.33 and QEMU before 2.3.1 does not distinguish between read lengths and write lengths, which might allow guest OS users to execute arbitrary code on the host OS by triggering use of an invalid index.

Category

6.9
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.96% Top 25%
Vendor Advisory gentoo.org Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory kernel.org Vendor Advisory org.au
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://support.lenovo.com/product_security/qemu third party advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1229640 issue tracking
https://support.lenovo.com/us/en/product_security/qemu third party advisory
https://www.exploit-db.com/exploits/37990/ exploit vdb entry third party advisory
https://security.gentoo.org/glsa/201510-02 issue tracking third party advisory vendor advisory
https://github.com/torvalds/linux/commit/ee73f656a604d5aa9df86a97102e4e462dd79924 third party advisory patch
http://www.debian.org/security/2015/dsa-3348 issue tracking third party advisory vendor advisory
http://rhn.redhat.com/errata/RHSA-2015-1508.html issue tracking third party advisory vendor advisory
http://rhn.redhat.com/errata/RHSA-2015-1507.html issue tracking third party advisory vendor advisory
http://mirror.linux.org.au/linux/kernel/v2.6/ChangeLog-2.6.33 broken link vendor advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ee73f656a604d5aa9df86a97102e4e462dd79924 patch vendor advisory
http://rhn.redhat.com/errata/RHSA-2015-1512.html third party advisory vendor advisory
http://www.securitytracker.com/id/1032598 vdb entry third party advisory
http://www.securityfocus.com/bid/75273 vdb entry third party advisory
http://www.openwall.com/lists/oss-security/2015/06/25/7 mailing list
https://www.mail-archive.com/qemu-devel%40nongnu.org/msg304138.html mailing list
https://www.arista.com/en/support/advisories-notices/security-advisories/1180-security-advisory-13 third party advisory

Frequently Asked Questions

What is the severity of CVE-2015-3214?
CVE-2015-3214 has been scored as a medium severity vulnerability.
How to fix CVE-2015-3214?
To fix CVE-2015-3214, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-3214 being actively exploited in the wild?
It is possible that CVE-2015-3214 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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