Vulnerability in Xen
CVE-2020-11740
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (35.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Xen — versions 4.13.0
- Debian Linux — versions 10.0
- Fedoraproject Fedora — versions 30, 31, 32
- openSUSE Leap — versions 15.1
Weakness classification (CWE)
References
- xenbits.xen.org/xsa/advisory-313.html (Patch, Vendor Advisory)
- xenbits.xen.org/xsa/advisory-313.html (Patch, Vendor Advisory)
- www.openwall.com/lists/oss-security/2020/04/14/1 (mailing-list, Patch, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2020-05/msg00006.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.gentoo.org/glsa/202005-08 (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2020/dsa-4723 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-11740?
- CVE-2020-11740 is a medium-severity vulnerability in Xen, classified under Improper Removal of Sensitive Information Before Storage or Transfer. CVSS score: 5.5/10. Published 2020-04-14.
- How severe is CVE-2020-11740?
- Medium severity. CVSS v3 base score is 5.5 out of 10.