VulnerabilityModified
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.
HIGH 8.8EPSS 0.38%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.38%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 0.38% probability · 31th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-193, CWE-787
- Affected
- xen/xen
- Source
- cve@mitre.org
References
- http://www.openwall.com/lists/oss-security/2021/01/19/4Mailing List, Third Party Advisory
- http://xenbits.xen.org/xsa/advisory-355.htmlVendor Advisory
- https://xenbits.xen.org/xsa/advisory-355.htmlVendor Advisory
- http://www.openwall.com/lists/oss-security/2021/01/19/4Mailing List, Third Party Advisory
- http://xenbits.xen.org/xsa/advisory-355.htmlVendor Advisory
- https://xenbits.xen.org/xsa/advisory-355.htmlVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.