Vulnerability CVE-2017-8284: Information
Description
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.
Severity: HIGH (7.0) Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Fixed packages
Package name | Branch | Fixed in version | Version from repository | Errata ID | Task # | State |
|---|---|---|---|---|---|---|
| qemu | sisyphus | 2.9.0-alt1 | 8.2.3-alt1 | ALT-PU-2017-1521-1 | 182191 | Fixed |
| qemu | sisyphus_e2k | 7.2.0-alt3.E2K.3 | 7.2.0-alt3.E2K.4 | ALT-PU-2024-1953-1 | - | Fixed |
| qemu | p10 | 2.9.0-alt1 | 8.2.2-alt0.p10.1 | ALT-PU-2017-1521-1 | 182191 | Fixed |
| qemu | p10_e2k | 7.2.0-alt3.E2K.0 | 7.2.0-alt3.E2K.3 | ALT-PU-2023-6766-1 | - | Fixed |
| qemu | p9 | 2.9.0-alt1 | 5.2.0-alt6 | ALT-PU-2017-1521-1 | 182191 | Fixed |
| qemu | p8 | 2.11.0-alt0.M80P.1 | 2.11.0-alt0.M80P.4 | ALT-PU-2018-1018-1 | 197530 | Fixed |
| qemu | c10f1 | 2.9.0-alt1 | 8.2.2-alt0.p10.1 | ALT-PU-2017-1521-1 | 182191 | Fixed |
| qemu | c9f2 | 2.9.0-alt1 | 5.2.0-alt6.c9.1 | ALT-PU-2017-1521-1 | 182191 | Fixed |
| qemu | c7 | 2.5.1.1-alt0.M70C.4 | 2.5.1.1-alt0.M70C.5 | ALT-PU-2017-2202-1 | 188182 | Fixed |
References to Advisories, Solutions, and Tools
Hyperlink | Resource |
|---|---|
| https://github.com/qemu/qemu/commit/30663fd26c0307e414622c7a8607fbc04f92ec14 |
|
| https://bugs.chromium.org/p/project-zero/issues/detail?id=1122 |
|