Vulnerability Details : CVE-2020-29040
An issue was discovered in Xen through 4.14.x allowing x86 HVM guest OS users to cause a denial of service (stack corruption), cause a data leak, or possibly gain privileges because of an off-by-one error. NOTE: this issue is caused by an incorrect fix for CVE-2020-27671.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2020-29040
- cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-29040
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 28 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-29040
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:P/A:P |
3.9
|
6.4
|
NIST | |
|
8.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
2.0
|
6.0
|
NIST |
CWE ids for CVE-2020-29040
-
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)
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-29040
-
https://xenbits.xen.org/xsa/advisory-355.html
XSA-355 - Xen Security AdvisoriesVendor Advisory
-
http://xenbits.xen.org/xsa/advisory-355.html
XSA-355 - Xen Security AdvisoriesVendor Advisory
-
http://www.openwall.com/lists/oss-security/2021/01/19/4
oss-security - Xen Security Advisory 355 v3 (CVE-2020-29040) - stack corruption from XSA-346 changeMailing List;Third Party Advisory
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