CVE-2021-3527
QEMU USB Redirector Stack Overflow DoS
Description
A flaw was found in the USB redirector device (usb-redir) of QEMU. Small USB packets are combined into a single, large transfer request, to reduce the overhead and improve performance. The combined size of the bulk transfer is used to dynamically allocate a variable length array (VLA) on the stack without proper validation. Since the total size is not bounded, a malicious guest could use this flaw to influence the array length and cause the QEMU process to perform an excessive allocation on the stack, resulting in a denial of service.
INFO
Published Date :
May 26, 2021, 10:15 p.m.
Last Modified :
Sept. 30, 2022, 3:10 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
Affected Products
The following products are affected by CVE-2021-3527
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
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-2021-3527.
| URL | Resource |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1955695 | Issue Tracking Patch Third Party Advisory |
| https://gitlab.com/qemu-project/qemu/-/commit/05a40b172e4d691371534828078be47e7fff524c | Patch Third Party Advisory |
| https://gitlab.com/qemu-project/qemu/-/commit/7ec54f9eb62b5d177e30eb8b1cad795a5f8d8986 | Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202208-27 | Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20210708-0008/ | Third Party Advisory |
| https://www.openwall.com/lists/oss-security/2021/05/05/5 | Mailing List Patch 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-2021-3527 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-3527 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 -
Modified Analysis by [email protected]
Sep. 30, 2022
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html No Types Assigned https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html Mailing List, Third Party Advisory Changed Reference Type https://security.gentoo.org/glsa/202208-27 No Types Assigned https://security.gentoo.org/glsa/202208-27 Third Party Advisory Added CWE NIST CWE-770 Changed CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Sep. 05, 2022
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html [No Types Assigned] -
CVE Modified by [email protected]
Aug. 15, 2022
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202208-27 [No Types Assigned] -
Reanalysis by [email protected]
Nov. 15, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* versions up to (excluding) 2021-05-05 OR *cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* versions up to (including) 6.0.0 -
Modified Analysis by [email protected]
Sep. 21, 2021
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html Mailing List, Third Party Advisory Changed Reference Type https://security.netapp.com/advisory/ntap-20210708-0008/ No Types Assigned https://security.netapp.com/advisory/ntap-20210708-0008/ Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Sep. 02, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html [No Types Assigned] -
CVE Modified by [email protected]
Jul. 08, 2021
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20210708-0008/ [No Types Assigned] -
Initial Analysis by [email protected]
Jun. 03, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1955695 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1955695 Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://gitlab.com/qemu-project/qemu/-/commit/05a40b172e4d691371534828078be47e7fff524c No Types Assigned https://gitlab.com/qemu-project/qemu/-/commit/05a40b172e4d691371534828078be47e7fff524c Patch, Third Party Advisory Changed Reference Type https://gitlab.com/qemu-project/qemu/-/commit/7ec54f9eb62b5d177e30eb8b1cad795a5f8d8986 No Types Assigned https://gitlab.com/qemu-project/qemu/-/commit/7ec54f9eb62b5d177e30eb8b1cad795a5f8d8986 Patch, Third Party Advisory Changed Reference Type https://www.openwall.com/lists/oss-security/2021/05/05/5 No Types Assigned https://www.openwall.com/lists/oss-security/2021/05/05/5 Mailing List, Patch, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* versions up to (excluding) 2021-05-05 Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:* *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-3527 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-2021-3527
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.00%
score
0.12065
percentile