UpHeron
All vulnerabilities

Servers and applications

CVE-2014-1891

Multiple integer overflows in the (1) FLASK_GETBOOL, (2) FLASK_SETBOOL, (3) FLASK_USER, and (4) FLASK_CONTEXT_TO_SID suboperations in the flask hypercall in Xen 4.3.x, 4.2.x, 4.1.x, 3.2.x, and earlier, when XSM is enabled, allow local users to cause a denial of service (processor fault) via unspecified vectors, a different vulnerability than CVE-2014-1892, CVE-2014-1893, and CVE-2014-1894.

Severity
Medium 5.2
Published
1 Apr 2014
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
0.5% in the next 30 daysHigher than 46% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-189
Attack
From the same local network · Needs a login
Attacker can
Take it down
CVSS vector
AV:A/AC:M/Au:S/C:N/I:N/A:C
Sources
NVD

Affected software

SoftwareAffected versions
XenServers and applications · cpe:o:xen:xen
  • Version 4.3.1
  • Version 4.2.3
  • Version 4.2.2
  • Version 4.2.1
All 25 release lines
  • Every version up to 4.3.0
  • Version 3.2.0
  • Version 3.2.1
  • Version 3.2.2
  • Version 3.2.3
  • Version 3.3.0
  • Version 3.3.1
  • Version 3.3.2
  • Version 3.4.0
  • Version 3.4.1
  • Version 3.4.2
  • Version 3.4.3
  • Version 3.4.4
  • Version 4.1.0
  • Version 4.1.1
  • Version 4.1.2
  • Version 4.1.3
  • Version 4.1.4
  • Version 4.1.5
  • Version 4.1.6.1
  • Version 4.2.0
  • Version 4.2.1
  • Version 4.2.2
  • Version 4.2.3
  • Version 4.3.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2014-1891
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2014-1891