CVE-2019-17340

Description

An issue was discovered in Xen through 4.11.x allowing x86 guest OS users to cause a denial of service or gain privileges because grant-table transfer requests are mishandled.

CVSS Metrics

• v3.1•HIGH•Score: 8.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
• v2.0•MEDIUM•Score: 6.1AV:L/AC:L/Au:N/C:P/I:P/A:C

EPSS Trends

Current EPSS score: 0.08%• Percentile: 23%

Techniques & Countermeasures

• CWE-401•Missing Release of Memory after Effective Lifetime

  The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

Affected Systems

• debian•debian_linux

  9.0 | 10.0

• xen•xen

  ≥ 3.2.0, ≤ 4.11.2

References (5)

• http://xenbits.xen.org/xsa/advisory-284.html
• https://xenbits.xen.org/xsa/advisory-284.html
• http://www.openwall.com/lists/oss-security/2019/10/25/1
• https://www.debian.org/security/2020/dsa-4602
• https://seclists.org/bugtraq/2020/Jan/21