CVE-2017-8284
Published: 26 April 2017
** 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."
Notes
| Author | Note |
|---|---|
| mdeslaur | upstream disputed this has a security impact. Ignoring. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
qemu Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Ignored
|
|
| upstream |
Needs triage
|
|
| xenial |
Ignored
|
|
| yakkety |
Ignored
|
|
| zesty |
Ignored
|
|
|
Patches: upstream: http://git.qemu.org/?p=qemu.git;a=commit;h=30663fd26c0307e414622c7a8607fbc04f92ec14 |
||
|
qemu-kvm Launchpad, Ubuntu, Debian |
precise |
Ignored
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.0 |
| Attack vector | Local |
| Attack complexity | High |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |