CVE-2017-8284
published 2017-04-26CVE-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 limit the instruction…
PriorityP428high7CVSS 3.0
AVLACHPRLUINSUCHIHAH
EPSS
0.44%
35.8th percentile
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.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | qemu | < qemu 1:2.10.0-1 (bookworm) | qemu 1:2.10.0-1 (bookworm) |
| qemu | qemu | <= 2.8.1.1 | — |
| qemu | qemu | >= 0 < 1:2.10.0-1 | 1:2.10.0-1 |
| qemu | qemu | >= 0 < 1:2.10.0-1 | 1:2.10.0-1 |
| qemu | qemu | >= 0 < 1:2.10.0-1 | 1:2.10.0-1 |
| qemu | qemu | >= 0 < 1:2.10.0-1 | 1:2.10.0-1 |
CVSS provenance
nvdv3.07.0HIGHCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv2.06.9MEDIUMAV:L/AC:M/Au:N/C:C/I:C/A:C
osv7.0HIGH
vendor_debian7.0LOW
vendor_redhat7.0HIGH
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GHSA
GHSA-rw7x-4625-rjj4: ** DISPUTED ** The disas_insn function in target/i386/translate
ghsa_unreviewed·2022-05-13
CVE-2017-8284 [HIGH] CWE-94 GHSA-rw7x-4625-rjj4: ** DISPUTED ** The disas_insn function in target/i386/translate
** DISPUTED ** 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."
OSV
CVE-2017-8284: The disas_insn function in target/i386/translate
osv·2017-04-26·CVSS 7.0
CVE-2017-8284 [HIGH] CVE-2017-8284: The disas_insn function in target/i386/translate
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.
Red Hat
QEMU: privilege escalation via disas_insn function in TCG mode
vendor_redhat·2019-10-02·CVSS 7.0
CVE-2017-8284 [HIGH] CWE-94 QEMU: privilege escalation via disas_insn function in TCG mode
QEMU: privilege escalation via disas_insn function in TCG mode
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.
Package: kvm (Red Hat Enterprise Linux 5) - Not affected
Package: xen (Red Hat Enterprise Linux 5) - Not affected
Package: qemu-kvm (Red Hat Enterprise Linux 6) - Not affected
Package: qemu-kvm-rhev (Red Hat Enterprise Linux 6) - Not affected
Package: qemu-kvm (Red Hat Enterprise Linux 7) - Not affected
Package: qemu-kvm-ma (
Debian
CVE-2017-8284: qemu - The disas_insn function in target/i386/translate.c in QEMU before 2.9.0, when TC...
vendor_debian·2017·CVSS 7.0
CVE-2017-8284 [HIGH] CVE-2017-8284: qemu - The disas_insn function in target/i386/translate.c in QEMU before 2.9.0, when TC...
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.
Scope: local
bookworm: resolved (fixed in 1:2.10.0-1)
bullseye: resolved (fixed in 1:2.10.0-1)
forky: resolved (fixed in 1:2.10.0-1)
sid: resolved (fixed in 1:2.10.0-1)
trixie: resolved (fixed in 1:2.10.0-1)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2017-8284 QEMU: privilege escalation via disas_insn function in TCG mode
bugzilla·2019-11-07·CVSS 7.0
CVE-2017-8284 [HIGH] CVE-2017-8284 QEMU: privilege escalation via disas_insn function in TCG mode
CVE-2017-8284 QEMU: privilege escalation via disas_insn function in TCG mode
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.
Reference:
https://github.com/qemu/qemu/commit/30663fd26c0307e414622c7a8607fbc04f92ec14
https://bugs.chromium.org/p/project-zero/issues/detail?id=1122
Discussion:
Created qemu tracking bugs for this issue:
Affects: epel-7 [bug 1769671]
---
Note that the QEMU project currently declares that any TCG bugs are NOT considered security issues as TCG emulation implementation is not considered to be of a qual
Bugzilla
CVE-2017-8284 qemu: privilege escalation via disas_insn function in TCG mode [epel-7]
bugzilla·2019-11-07·CVSS 7.0
CVE-2017-8284 [HIGH] CVE-2017-8284 qemu: privilege escalation via disas_insn function in TCG mode [epel-7]
CVE-2017-8284 qemu: privilege escalation via disas_insn function in TCG mode [epel-7]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of epel-7.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
Discussion:
Use the following template to for t
2017-04-26
Published