Vulnerability Details : CVE-2015-8743
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.
Vulnerability category: Memory Corruption
Products affected by CVE-2015-8743
- cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
Threat overview for CVE-2015-8743
Top countries where our scanners detected CVE-2015-8743
Top open port discovered on systems with this issue
22
IPs affected by CVE-2015-8743 2
Threat actors abusing to this issue?
Yes
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affected by CVE-2015-8743!
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Exploit prediction scoring system (EPSS) score for CVE-2015-8743
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 25 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2015-8743
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
3.6
|
LOW | AV:L/AC:L/Au:N/C:P/I:P/A:N |
3.9
|
4.9
|
NIST | |
7.1
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
1.8
|
5.2
|
NIST |
CWE ids for CVE-2015-8743
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2015-8743
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http://www.debian.org/security/2016/dsa-3469
Debian -- Security Information -- DSA-3469-1 qemuThird Party Advisory
-
http://www.securitytracker.com/id/1034574
QEMU NE2000 Memory Access Error Lets Local Users Gain Elevated Privileges - SecurityTrackerThird Party Advisory;VDB Entry
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https://bugzilla.redhat.com/show_bug.cgi?id=1264929
1264929 – (CVE-2015-8743) CVE-2015-8743 Qemu: net: ne2000: OOB memory access in ioport r/w functionsIssue Tracking
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http://www.debian.org/security/2016/dsa-3471
Debian -- Security Information -- DSA-3471-1 qemuThird Party Advisory
-
http://www.securityfocus.com/bid/79820
QEMU CVE-2015-8743 Information Disclosure VulnerabilityThird Party Advisory;VDB Entry
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http://www.openwall.com/lists/oss-security/2016/01/04/1
oss-security - CVE request Qemu: net: ne2000: OOB r/w in ioport operationsMailing List;Third Party Advisory
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https://security.gentoo.org/glsa/201602-01
QEMU: Multiple vulnerabilities (GLSA 201602-01) — Gentoo securityThird Party Advisory
-
http://www.openwall.com/lists/oss-security/2016/01/04/2
oss-security - Re: CVE request Qemu: net: ne2000: OOB r/w in ioport operationsMailing List;Third Party Advisory
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http://www.debian.org/security/2016/dsa-3470
Debian -- Security Information -- DSA-3470-1 qemu-kvmThird Party Advisory
-
https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg00050.html
Re: [Qemu-devel] [PATCH v3] net: ne2000: fix bounds check in ioport operPatch;Vendor Advisory
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