Vulnerability Details : CVE-2015-8701
QEMU (aka Quick Emulator) built with the Rocker switch emulation support is vulnerable to an off-by-one error. It happens while processing transmit (tx) descriptors in 'tx_consume' routine, if a descriptor was to have more than allowed (ROCKER_TX_FRAGS_MAX=16) fragments. A privileged user inside guest could use this flaw to cause memory leakage on the host or crash the QEMU process instance resulting in DoS issue.
Vulnerability category: Denial of service
Products affected by CVE-2015-8701
- cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
Threat overview for CVE-2015-8701
Top countries where our scanners detected CVE-2015-8701
Top open port discovered on systems with this issue
22
IPs affected by CVE-2015-8701 2
Threat actors abusing to this issue?
Yes
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affected by CVE-2015-8701!
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Exploit prediction scoring system (EPSS) score for CVE-2015-8701
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-2015-8701
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
2.1
|
LOW | AV:L/AC:L/Au:N/C:N/I:N/A:P |
3.9
|
2.9
|
NIST | |
6.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |
2.0
|
4.0
|
NIST |
CWE ids for CVE-2015-8701
-
A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.Assigned by: nvd@nist.gov (Primary)
References for CVE-2015-8701
-
http://www.openwall.com/lists/oss-security/2015/12/29/1
oss-security - Re: CVE request Qemu net: rocker: fix an incorrect array bounds checkMailing 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/2015/12/28/6
oss-security - CVE request Qemu net: rocker: fix an incorrect array bounds checkMailing List;Third Party Advisory
-
http://www.securityfocus.com/bid/79706
QEMU 'rocker.c' Stack Buffer Overflow VulnerabilityThird Party Advisory;VDB Entry
-
https://bugzilla.redhat.com/show_bug.cgi?id=1286971
1286971 – (CVE-2015-8701) CVE-2015-8701 Qemu: net: rocker: stack buffer overflow(off-by-one) in tx_consume routineIssue Tracking
-
https://lists.gnu.org/archive/html/qemu-devel/2015-12/msg04629.html
[Qemu-devel] [PATCH v2] net: rocker: fix an incorrect array bounds checkPatch;Vendor Advisory
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