vulnwire
7.0high

CVE-2017-8284

The disas_insn function in target/i386/translate.c in QEMU before 2.9.0, when TCG mode without hardware acceleration is used, does not limi…

Published 9 y ago · modified 4 mo ago · JSON

CVSS
7.0
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
0.4%
percentile 38%
Public exploits
0
none known

The disas_insn function in target/i386/translate.c in QEMU before 2.9.0, when TCG mode without hardware acceleration is used, does not limit the instruction size, which allows local users to gain privileges by creating a modified basic block that injects code into a setuid program, as demonstrated by procmail. NOTE: the vendor has stated "this bug does not violate any security guarantees QEMU makes.

Exploit prediction (EPSS)

0.43% probability of exploitation in the next 30 days, higher than 38% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.07.0CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD2.06.9AV:L/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code

References

  • bugs.chromium.org /p/project-zero/issues/detail?id=1122 · x_refsource_MISC, x_transferred
  • github.com /qemu/qemu/commit/30663fd26c0307e414622c7a8607fbc04f92ec14 · x_refsource_MISC, x_transferred

Sources

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