CVE-2015-8818

Qemu: OOB access in address_space_rw leads to segmentation fault

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The cpu_physical_memory_write_rom_internal function in exec.c in QEMU (aka Quick Emulator) does not properly skip MMIO regions, which allows local privileged guest users to cause a denial of service (guest crash) via unspecified vectors.

La función cpu_physical_memory_write_rom_internal en exec.c en QEMU (también conocido como Quick Emulator) no omite apropiadamente las regiones MMIO, lo que permite a usuarios invitados privilegiados locales provocar una denegación de servicio (caída del huésped) a través de vectores no especificados.

An out-of-bounds flaw was found in the QEMU emulator built using 'address_space_translate' to map an address to a MemoryRegionSection. The flaw could occur while doing pci_dma_read/write calls, resulting in an out-of-bounds read-write access error. A privileged user inside a guest could use this flaw to crash the guest instance (denial of service).

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

Attack Vector

Adjacent

Attack Complexity

High

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-03-01 CVE Reserved
2016-11-08 CVE Published
2023-03-08 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-787: Out-of-bounds Write

CAPEC

References (10)

URL	Tag	Source
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=b242e0e0e2969c044a318e56f7988bbd84de1f63	X_refsource_confirm
http://www.openwall.com/lists/oss-security/2016/03/01/1	Mailing List
http://www.openwall.com/lists/oss-security/2016/03/01/10	Mailing List

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://rhn.redhat.com/errata/RHSA-2016-2670.html	2023-02-12
http://rhn.redhat.com/errata/RHSA-2016-2671.html	2023-02-12
http://rhn.redhat.com/errata/RHSA-2016-2704.html	2023-02-12
http://rhn.redhat.com/errata/RHSA-2016-2705.html	2023-02-12
http://rhn.redhat.com/errata/RHSA-2016-2706.html	2023-02-12
https://bugzilla.redhat.com/show_bug.cgi?id=1300771	2016-11-14
https://access.redhat.com/security/cve/CVE-2015-8818	2016-11-14

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				<= 2.3.1 Search vendor "Qemu" for product "Qemu" and version " <= 2.3.1"		-		Affected