Information disclosure in Citrix Xenserver
CVE-2018-3665
System software utilizing Lazy FP state restore technique on systems using Intel Core-based microprocessors may potentially allow a local process to infer data from another process through a speculative execution side channel.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (50.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Citrix Xenserver — versions 7.0, 7.1, 7.3
- FreeBSD — versions 11.0, 11.1, 11.2
- Intel Core I3 — versions 330e, 330m, 330um
- Intel Core I5 — versions 430m, 430um, 450m
- Intel Core I7 — versions 7y75, 610e, 620le
- Intel Core M — versions 5y10, 5y10a, 5y10c
- Intel Core M3 — versions 6y30, 7y30, 7y32
- Intel Core M5 — versions 6y54, 6y57
- Intel Core M7 — versions 6y75
- Intel Corporation Core-Based Microprocessors — versions All
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.debian.org/debian-lts-announce/2018/07/msg00015.html (mailing-list, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:2164 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3696-1/ (vendor-advisory, Third Party Advisory)
- www.securitytracker.com/id/1041125 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.debian.org/debian-lts-announce/2018/07/msg00016.html (mailing-list, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:1944 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:1852 (vendor-advisory, Third Party Advisory)
- security.FreeBSD.org/advisories/FreeBSD-SA-18:07.lazyfpu.asc (vendor-advisory, Third Party Advisory)
- www.securitytracker.com/id/1041124 (VDB Entry, Third Party Advisory, vdb-entry)
- access.redhat.com/errata/RHSA-2018:2165 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-3665?
- CVE-2018-3665 is a medium-severity vulnerability in Citrix Xenserver, classified under Information Disclosure. CVSS score: 5.6/10. Published 2018-06-21.
- How severe is CVE-2018-3665?
- Medium severity. CVSS v3 base score is 5.6 out of 10.
- Is CVE-2018-3665 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.