CVE-2013-4368: Infoleak
First published: Thu Oct 17 2013(Updated: )
The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xen xen-unstable | <=4.3.0 | |
| Xen xen-unstable | =3.0.2 | |
| Xen xen-unstable | =3.0.3 | |
| Xen xen-unstable | =3.0.4 | |
| Xen xen-unstable | =3.1.3 | |
| Xen xen-unstable | =3.1.4 | |
| Xen xen-unstable | =3.2.0 | |
| Xen xen-unstable | =3.2.1 | |
| Xen xen-unstable | =3.2.2 | |
| Xen xen-unstable | =3.2.3 | |
| Xen xen-unstable | =3.3.0 | |
| Xen xen-unstable | =3.3.1 | |
| Xen xen-unstable | =3.3.2 | |
| Xen xen-unstable | =3.4.0 | |
| Xen xen-unstable | =3.4.1 | |
| Xen xen-unstable | =3.4.2 | |
| Xen xen-unstable | =3.4.3 | |
| Xen xen-unstable | =3.4.4 | |
| Xen xen-unstable | =4.0.0 | |
| Xen xen-unstable | =4.0.1 | |
| Xen xen-unstable | =4.0.2 | |
| Xen xen-unstable | =4.0.3 | |
| Xen xen-unstable | =4.0.4 | |
| Xen xen-unstable | =4.1.0 | |
| Xen xen-unstable | =4.1.1 | |
| Xen xen-unstable | =4.1.2 | |
| Xen xen-unstable | =4.1.3 | |
| Xen xen-unstable | =4.1.4 | |
| Xen xen-unstable | =4.1.5 | |
| Xen xen-unstable | =4.1.6.1 | |
| Xen xen-unstable | =4.2.0 | |
| Xen xen-unstable | =4.2.1 | |
| Xen xen-unstable | =4.2.2 | |
| Xen xen-unstable | =4.2.3 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00015.html
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html
- http://lists.opensuse.org/opensuse-security-announce/2014-04/msg00000.html
- http://lists.opensuse.org/opensuse-updates/2013-11/msg00009.html
- http://rhn.redhat.com/errata/RHSA-2013-1449.html
- http://security.gentoo.org/glsa/glsa-201407-03.xml
- http://www.debian.org/security/2014/dsa-3006
- http://www.openwall.com/lists/oss-security/2013/10/10/10
- https://exchange.xforce.ibmcloud.com/vulnerabilities/87799
Frequently Asked Questions
What is the severity of CVE-2013-4368?
CVE-2013-4368 has a moderate severity level due to the potential for local 64-bit PV guests to access sensitive hypervisor stack content.
How do I fix CVE-2013-4368?
To mitigate CVE-2013-4368, upgrade to a version of Xen later than 4.3.0 or apply relevant patches provided by the Xen project.
What versions of Xen are affected by CVE-2013-4368?
CVE-2013-4368 affects Xen versions 3.1.x, 3.2.x, 3.3.x, 3.4.x, 4.0.x, 4.1.x, and 4.2.x up to the specified limits.
Can CVE-2013-4368 be exploited remotely?
No, CVE-2013-4368 is considered a local vulnerability, meaning it requires local access to the affected system to be exploited.
What impact does CVE-2013-4368 have on system security?
The impact of CVE-2013-4368 is that it may allow unauthorized access to sensitive hypervisor data, which could lead to data leakage.
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- version/xen xen-unstable/3.0.4
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- version/xen xen-unstable/3.1.4
- version/xen xen-unstable/3.2.0
- version/xen xen-unstable/3.2.1
- version/xen xen-unstable/3.2.2
- version/xen xen-unstable/3.2.3
- version/xen xen-unstable/3.3.0
- version/xen xen-unstable/3.3.1
- version/xen xen-unstable/3.3.2
- version/xen xen-unstable/3.4.0
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- version/xen xen-unstable/3.4.2
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