Vulnerability in Xen
CVE-2019-17342
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 by leveraging a race condition that arose when XENMEM_exchange was introduced.
Vulnerability class: Race Condition
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (15.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Xen
- Debian Linux — versions 9.0, 10.0
Weakness classification (CWE)
References
- xenbits.xen.org/xsa/advisory-287.html (Patch, Vendor Advisory)
- xenbits.xen.org/xsa/advisory-287.html (Vendor Advisory)
- www.openwall.com/lists/oss-security/2019/10/25/2 (mailing-list, Mailing List)
- www.debian.org/security/2020/dsa-4602 (vendor-advisory, Third Party Advisory)
- seclists.org/bugtraq/2020/Jan/21 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-17342?
- CVE-2019-17342 is a high-severity vulnerability in Xen, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.0/10. Published 2019-10-08.
- How severe is CVE-2019-17342?
- High severity. CVSS v3 base score is 7.0 out of 10.