CVE-2020-25599
CVE-2020-25599
This page contains facts from public vulnerability sources. Check the original advisory before updating.
An issue was discovered in Xen through 4.14.x. There are evtchn_reset() race conditions. Uses of EVTCHNOP_reset (potentially by a guest on itself) or XEN_DOMCTL_soft_reset (by itself covered by XSA-77) can lead to the violation of various internal assumptions. This may lead to out of bounds memory accesses or triggering of bug checks. In particular, x86 PV guests may be able to elevate their privilege to that of the host. Host and guest crashes are also possible, leading to a Denial of Service (DoS). Information leaks cannot be ruled out. All Xen versions from 4.5 onwards are vulnerable. Xen versions 4.4 and earlier are not vulnerable.
CVSS 7.0 · High · EPSS 0.3% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
n/a
- Versions
- n/a: Affected
No fix published
xen Debian:12
- Affected ranges
- ECOSYSTEM: < 4.14.0+80-gd101b417b7-1
Update to 4.14.0+80-gd101b417b7-1
xen Debian:13
- Affected ranges
- ECOSYSTEM: < 4.14.0+80-gd101b417b7-1
Update to 4.14.0+80-gd101b417b7-1
xen Debian:14
- Affected ranges
- ECOSYSTEM: < 4.14.0+80-gd101b417b7-1
Update to 4.14.0+80-gd101b417b7-1
xen Ubuntu:16.04:LTS
- Versions
- 4.5.1-0ubuntu1
- 4.5.1-0ubuntu2
- 4.6.0-1ubuntu1
- 4.6.0-1ubuntu2
- 4.6.0-1ubuntu4
- 4.6.0-1ubuntu4.1
- 4.6.0-1ubuntu4.2
- 4.6.0-1ubuntu4.3
- 4.6.5-0ubuntu1
- 4.6.5-0ubuntu1.1
- 4.6.5-0ubuntu1.2
- 4.6.5-0ubuntu1.4
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
xen Ubuntu:18.04:LTS
- Versions
- 4.9.0-0ubuntu3
- 4.9.0-0ubuntu4
- 4.9.2-0ubuntu1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
xen Ubuntu:20.04:LTS
- Versions
- 4.9.2-0ubuntu2
- 4.9.2-0ubuntu6
- 4.9.2-0ubuntu7
- 4.11.3+24-g14b62ab3e5-1ubuntu1
- 4.11.3+24-g14b62ab3e5-1ubuntu2
- 4.11.3+24-g14b62ab3e5-1ubuntu2.2
- Affected ranges
- ECOSYSTEM: < 4.11.3+24-g14b62ab3e5-1ubuntu2.3
Update to 4.11.3+24-g14b62ab3e5-1ubuntu2.3
Original sources
- https://xenbits.xen.org/xsa/advisory-343.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4JRXMKEMQRQYWYEPHVBIWUEAVQ3LU4FN/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DA633Y3G5KX7MKRN4PFEGM3IVTJMBEOM/
- https://www.debian.org/security/2020/dsa-4769
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00008.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RJZERRBJN6E6STDCHT4JHP4MI6TKBCJE/
- https://security.gentoo.org/glsa/202011-06
- http://www.openwall.com/lists/oss-security/2020/12/16/5
- https://nvd.nist.gov/vuln/detail/CVE-2020-25599