Vulnerability Description
An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (without active profiling) to obtain sensitive information about other guests. Unprivileged guests can request to map xenoprof buffers, even if profiling has not been enabled for those guests. These buffers were not scrubbed.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Xen | Xen | >= 3.2.0, <= 4.13.0 |
| Debian | Debian Linux | 10.0 |
| Fedoraproject | Fedora | 30 |
| Opensuse | Leap | 15.1 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00006.htmlMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2020/04/14/1Mailing ListPatchThird Party Advisory
- http://xenbits.xen.org/xsa/advisory-313.htmlPatchVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/202005-08Third Party Advisory
- https://www.debian.org/security/2020/dsa-4723Third Party Advisory
- https://xenbits.xen.org/xsa/advisory-313.htmlPatchVendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00006.htmlMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2020/04/14/1Mailing ListPatchThird Party Advisory
- http://xenbits.xen.org/xsa/advisory-313.htmlPatchVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
FAQ
What is CVE-2020-11740?
CVE-2020-11740 is a vulnerability with a CVSS score of 5.5 (MEDIUM). An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (without active profiling) to obtain sensitive information about other guests. Unprivileged guests can request to map...
How severe is CVE-2020-11740?
CVE-2020-11740 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-11740?
Check the references section above for vendor advisories and patch information. Affected products include: Xen Xen, Debian Debian Linux, Fedoraproject Fedora, Opensuse Leap.