CVE-2015-8743
Summary
| CVE | CVE-2015-8743 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2016-12-29 22:59:00 UTC |
| Updated | 2026-05-06 22:30:45 UTC |
| Description | QEMU (aka Quick Emulator) built with the NE2000 device emulation support is vulnerable to an OOB r/w access issue. It could occur while performing 'ioport' r/w operations. A privileged (CAP_SYS_RAWIO) user/process could use this flaw to leak or corrupt QEMU memory bytes. |
Risk And Classification
Primary CVSS: v3.1 7.1 HIGH from [email protected]
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
EPSS: 0.000640000 probability, percentile 0.197900000 (date 2026-05-11)
Problem Types: CWE-125 | CWE-787 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 7.1 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
| 2.0 | [email protected] | Primary | 3.6 | AV:L/AC:L/Au:N/C:P/I:P/A:N |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
NoneCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS v2.0 Breakdown
Access Vector
LocalAccess Complexity
LowAuthentication
NoneConfidentiality
PartialIntegrity
PartialAvailability
NoneAV:L/AC:L/Au:N/C:P/I:P/A:N
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Debian | Debian Linux | 7.0 | All | All | All |
| Operating System | Debian | Debian Linux | 8.0 | All | All | All |
| Application | Qemu | Qemu | All | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Debian -- Security Information -- DSA-3469-1 qemu | af854a3a-2127-422b-91ae-364da2661108 | www.debian.org | Third Party Advisory |
| Debian -- Security Information -- DSA-3470-1 qemu-kvm | af854a3a-2127-422b-91ae-364da2661108 | www.debian.org | Third Party Advisory |
| Bug 1264929 – CVE-2015-8743 Qemu: net: ne2000: OOB memory access in ioport r/w functions | af854a3a-2127-422b-91ae-364da2661108 | bugzilla.redhat.com | Issue Tracking |
| Debian -- Security Information -- DSA-3471-1 qemu | af854a3a-2127-422b-91ae-364da2661108 | www.debian.org | Third Party Advisory |
| QEMU NE2000 Memory Access Error Lets Local Users Gain Elevated Privileges - SecurityTracker | af854a3a-2127-422b-91ae-364da2661108 | www.securitytracker.com | Third Party Advisory, VDB Entry |
| oss-security - CVE request Qemu: net: ne2000: OOB r/w in ioport operations | af854a3a-2127-422b-91ae-364da2661108 | www.openwall.com | Mailing List, Third Party Advisory |
| Re: [Qemu-devel] [PATCH v3] net: ne2000: fix bounds check in ioport oper | af854a3a-2127-422b-91ae-364da2661108 | lists.gnu.org | Patch, Vendor Advisory |
| oss-security - Re: CVE request Qemu: net: ne2000: OOB r/w in ioport operations | af854a3a-2127-422b-91ae-364da2661108 | www.openwall.com | Mailing List, Third Party Advisory |
| QEMU CVE-2015-8743 Information Disclosure Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Third Party Advisory, VDB Entry |
| QEMU: Multiple vulnerabilities (GLSA 201602-01) — Gentoo security | af854a3a-2127-422b-91ae-364da2661108 | security.gentoo.org | Third Party Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.