Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2021-20255

A stack overflow via an infinite recursion vulnerability was found in the eepro100 i8255x device emulator of QEMU. This issue occurs while processing controller commands due to a DMA reentry issue. This flaw allows a guest user or process to consume CPU cycles or crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Published

2021-03-09T20:15:13.133

Last Modified

2024-11-21T05:46:13.340

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.5 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:N/I:N/A:P

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

3.9

Impact Score

2.9

Weaknesses

Type: Secondary
CWE-835
Type: Primary
CWE-674

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	qemu	qemu	*	Yes
Operating System	debian	debian_linux	9.0	Yes

References

https://bugzilla.redhat.com/show_bug.cgi?id=1930646 Issue Tracking, Patch, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html Mailing List, Third Party Advisory ([email protected])
https://ruhr-uni-bochum.sciebo.de/s/NNWP2GfwzYKeKwE?path=%2Feepro100_stackoverflow1 Third Party Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20210507-0003/ Third Party Advisory ([email protected])
https://www.openwall.com/lists/oss-security/2021/02/25/1 Mailing List, Patch, Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1930646 Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://ruhr-uni-bochum.sciebo.de/s/NNWP2GfwzYKeKwE?path=%2Feepro100_stackoverflow1 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20210507-0003/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.openwall.com/lists/oss-security/2021/02/25/1 Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)