Vulnerability · Published Dec 15, 2020 · Assigned by mitre
CVE-2020-29485
Medium 5.5
In plain English
A medium-severity security flaw in the xen package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.4%top 65.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An issue was discovered in Xen 4.6 through 4.14.x. When acting upon a guest XS_RESET_WATCHES request, not all tracking information is freed. A guest can cause unbounded memory usage in oxenstored. This can lead to a system-wide DoS. Only systems using the Ocaml Xenstored implementation are vulnerable. Systems using the C Xenstored implementation are not vulnerable.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | xen | 4.14.1-r0 | ALPINE-CVE-2020-29485 |
| Alpine:v3.21 | xen | 4.14.1-r0 | ALPINE-CVE-2020-29485 |
| Alpine:v3.22 | xen | 4.14.1-r0 | ALPINE-CVE-2020-29485 |
| Alpine:v3.23 | xen | 4.14.1-r0 | ALPINE-CVE-2020-29485 |
| Alpine:v3.24 | xen | 4.14.1-r0 | ALPINE-CVE-2020-29485 |
| Debian:12 | xen | 4.14.0+88-g1d1d1f5391-1 | DEBIAN-CVE-2020-29485 |
| Debian:13 | xen | 4.14.0+88-g1d1d1f5391-1 | DEBIAN-CVE-2020-29485 |
| Debian:14 | xen | 4.14.0+88-g1d1d1f5391-1 | DEBIAN-CVE-2020-29485 |
Affected products (as reported)
References
- https://xenbits.xenproject.org/xsa/advisory-330.txt x_refsource_MISC
- DSA-4812 vendor-advisory, x_refsource_DEBIAN
- FEDORA-2020-64859a826b vendor-advisory, x_refsource_FEDORA
- FEDORA-2020-df772b417b vendor-advisory, x_refsource_FEDORA