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CVE-2020-11741

Status Candidate

Overview

An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (with active profiling) to obtain sensitive information about other guests, cause a denial of service, or possibly gain privileges. For guests for which "active" profiling was enabled by the administrator, the xenoprof code uses the standard Xen shared ring structure. Unfortunately, this code did not treat the guest as a potential adversary: it trusts the guest not to modify buffer size information or modify head / tail pointers in unexpected ways. This can crash the host (DoS). Privilege escalation cannot be ruled out.

Related Files

Debian Security Advisory 4723-1
Posted Jul 28, 2020
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4723-1 - Multiple vulnerabilities have been discovered in the Xen hypervisor, which could result in denial of service, guest-to-host privilege escalation or information leaks.

tags | advisory, denial of service, vulnerability
systems | linux, debian
advisories | CVE-2020-11739, CVE-2020-11740, CVE-2020-11741, CVE-2020-11742, CVE-2020-11743, CVE-2020-15563, CVE-2020-15564, CVE-2020-15565, CVE-2020-15566, CVE-2020-15567
SHA-256 | 23a14d5d4f1b40346c3b8f9436b94f8f84c91c2bcadf8328b731909eac010506
Download | Favorite | View
Gentoo Linux Security Advisory 202005-08
Posted May 15, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202005-8 - Multiple vulnerabilities have been found in Xen, the worst of which could allow privilege escalation. Versions less than 4.12.2-r2 are affected.

tags | advisory, vulnerability
systems | linux, gentoo
advisories | CVE-2020-11739, CVE-2020-11740, CVE-2020-11741, CVE-2020-11742, CVE-2020-11743
SHA-256 | 8ba00f32c4e9e8000a32d7371e9e6a65e8aad643c362364438ff870a9a4f70d0
Download | Favorite | View
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