CVE-2010-0309

Description

The pit_ioport_read function in the Programmable Interval Timer (PIT) emulation in i8254.c in KVM 83 does not properly use the pit_state data structure, which allows guest OS users to cause a denial of service (host OS crash or hang) by attempting to read the /dev/port file.

Category

6.8
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.55%
Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory redhat.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/38158 vdb entry
http://www.ubuntu.com/usn/USN-914-1 vendor advisory
http://www.vupen.com/english/advisories/2010/0638 vdb entry
https://rhn.redhat.com/errata/RHSA-2010-0088.html vendor advisory
http://secunia.com/advisories/38922 third party advisory
http://www.openwall.com/lists/oss-security/2010/02/02/4 mailing list
http://www.debian.org/security/2010/dsa-1996 vendor advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11095 vdb entry signature
https://bugzilla.redhat.com/show_bug.cgi?id=560887
http://www.openwall.com/lists/oss-security/2010/02/02/1 mailing list
http://www.mail-archive.com/kvm%40vger.kernel.org/msg28002.html mailing list
https://rhn.redhat.com/errata/RHSA-2010-0095.html patch vendor advisory
http://secunia.com/advisories/38492 third party advisory

Frequently Asked Questions

What is the severity of CVE-2010-0309?
CVE-2010-0309 has been scored as a medium severity vulnerability.
How to fix CVE-2010-0309?
To fix CVE-2010-0309, 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-2010-0309 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2010-0309 is being actively exploited. 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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