Quick emulator (QEMU) before 2.8 built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process.
Published 2018-07-27 19:29:00
Updated 2021-08-04 17:15:36
Source Red Hat, Inc.
View at NVD,   CVE.org
Vulnerability category: Memory CorruptionExecute code

Products affected by CVE-2017-2620

Exploit prediction scoring system (EPSS) score for CVE-2017-2620

2.54%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 85 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2017-2620

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
9.0
HIGH AV:N/AC:L/Au:S/C:C/I:C/A:C
8.0
10.0
NIST
4.9
MEDIUM AV:A/AC:M/Au:S/C:P/I:P/A:P
4.4
6.4
Red Hat, Inc.
9.9
CRITICAL CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
3.1
6.0
NIST
5.5
MEDIUM CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
1.3
3.7
Red Hat, Inc.

CWE ids for CVE-2017-2620

  • The product reads data past the end, or before the beginning, of the intended buffer.
    Assigned by: nvd@nist.gov (Primary)
  • The product writes data past the end, or before the beginning, of the intended buffer.
    Assigned by:
    • nvd@nist.gov (Primary)
    • secalert@redhat.com (Secondary)

References for CVE-2017-2620

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