Vulnerability Details : CVE-2019-17346
An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because of an incompatibility between Process Context Identifiers (PCID) and TLB flushes.
Vulnerability category: Input validationDenial of service
Products affected by CVE-2019-17346
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-17346
0.19%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 38 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-17346
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.2
|
HIGH | AV:L/AC:L/Au:N/C:C/I:C/A:C |
3.9
|
10.0
|
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-2019-17346
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-17346
-
https://xenbits.xen.org/xsa/advisory-292.html
XSA-292 - Xen Security AdvisoriesVendor Advisory
-
http://www.openwall.com/lists/oss-security/2019/10/25/5
oss-security - Xen Security Advisory 292 v3 (CVE-2019-17346) - x86: insufficient TLB flushing when using PCIDMailing List
-
https://www.debian.org/security/2020/dsa-4602
Debian -- Security Information -- DSA-4602-1 xenThird Party Advisory
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https://seclists.org/bugtraq/2020/Jan/21
Bugtraq: [SECURITY] [DSA 4602-1] xen security updateMailing List;Third Party Advisory
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http://xenbits.xen.org/xsa/advisory-292.html
XSA-292 - Xen Security AdvisoriesPatch;Vendor Advisory
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