CVE-2016-7421
QEMU Pvscsi Ring Overflow Denial of Service
Description
The pvscsi_ring_pop_req_descr function in hw/scsi/vmw_pvscsi.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by leveraging failure to limit process IO loop to the ring size.
INFO
Published Date :
Dec. 10, 2016, 12:59 a.m.
Last Modified :
Feb. 12, 2023, 11:25 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
0.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2016-7421.
| URL | Resource |
|---|---|
| http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=d251157ac1928191af851d199a9ff255d330bec9 | |
| http://www.openwall.com/lists/oss-security/2016/09/16/3 | Mailing List Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2016/09/16/9 | Mailing List Third Party Advisory |
| http://www.securityfocus.com/bid/92998 | Third Party Advisory VDB Entry |
| https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html | Mailing List Third Party Advisory |
| https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg03609.html | Patch Third Party Advisory |
| https://security.gentoo.org/glsa/201609-01 | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2016-7421 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2016-7421 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Feb. 12, 2023
Action Type Old Value New Value Removed Reference http://git.qemu.org/?p=qemu.git;a=commit;h=d251157ac1928191af851d199a9ff255d330bec9 [Patch, Vendor Advisory] Added Reference http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=d251157ac1928191af851d199a9ff255d330bec9 [No Types Assigned] -
Modified Analysis by [email protected]
Oct. 15, 2020
Action Type Old Value New Value Removed CVSS V3 NIST AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H Changed Reference Type http://git.qemu.org/?p=qemu.git;a=commit;h=d251157ac1928191af851d199a9ff255d330bec9 Issue Tracking, Patch http://git.qemu.org/?p=qemu.git;a=commit;h=d251157ac1928191af851d199a9ff255d330bec9 Patch, Vendor Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html No Types Assigned https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html Mailing List, Third Party Advisory Changed Reference Type https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg03609.html Patch, Vendor Advisory https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg03609.html Patch, Third Party Advisory Changed Reference Type https://security.gentoo.org/glsa/201609-01 No Types Assigned https://security.gentoo.org/glsa/201609-01 Third Party Advisory Removed CWE NIST CWE-399 Added CWE NIST CWE-834 Changed CPE Configuration OR *cpe:2.3:a:qemu:qemu:-:*:*:*:*:*:*:* OR *cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* versions up to (including) 2.7.1 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Dec. 01, 2018
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html [No Types Assigned] -
CVE Modified by [email protected]
Jul. 01, 2017
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/201609-01 [No Types Assigned] -
Initial Analysis by [email protected]
Dec. 12, 2016
Action Type Old Value New Value Added CPE Configuration Configuration 1 OR *cpe:2.3:a:qemu:qemu:-:*:*:*:*:*:*:* Added CVSS V2 (AV:L/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3 AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H Changed Reference Type http://www.openwall.com/lists/oss-security/2016/09/16/3 No Types Assigned http://www.openwall.com/lists/oss-security/2016/09/16/3 Third Party Advisory, Mailing List Changed Reference Type https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg03609.html No Types Assigned https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg03609.html Vendor Advisory, Patch Changed Reference Type http://www.openwall.com/lists/oss-security/2016/09/16/9 No Types Assigned http://www.openwall.com/lists/oss-security/2016/09/16/9 Third Party Advisory, Mailing List Changed Reference Type http://www.securityfocus.com/bid/92998 No Types Assigned http://www.securityfocus.com/bid/92998 Third Party Advisory, VDB Entry Changed Reference Type http://git.qemu.org/?p=qemu.git;a=commit;h=d251157ac1928191af851d199a9ff255d330bec9 No Types Assigned http://git.qemu.org/?p=qemu.git;a=commit;h=d251157ac1928191af851d199a9ff255d330bec9 Issue Tracking, Patch Added CWE CWE-399
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2016-7421 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2016-7421
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.00%
score
0.24592
percentile