CVE-2020-11740
published 2020-04-14CVE-2020-11740: An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (without active profiling) to obtain sensitive information about other…
PriorityP423medium5.5CVSS 3.1
AVLACLPRLUINSUCHINAN
EPSS
0.43%
35.5th percentile
An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (without active profiling) to obtain sensitive information about other guests. Unprivileged guests can request to map xenoprof buffers, even if profiling has not been enabled for those guests. These buffers were not scrubbed.
Affected
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | xen | < xen 4.11.4-1 (bookworm) | xen 4.11.4-1 (bookworm) |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| opensuse | leap | — | — |
| xen | xen | — | — |
| xen | xen | >= 0 < 4.11.4-1 | 4.11.4-1 |
| xen | xen | >= 0 < 4.11.4-1 | 4.11.4-1 |
| xen | xen | >= 0 < 4.11.4-1 | 4.11.4-1 |
| xen | xen | >= 0 < 4.11.4-1 | 4.11.4-1 |
| xen | xen | >= 0 < 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 |
| xen | xen | 3.2.0 – 4.13.0 | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
nvdv2.02.1LOWAV:L/AC:L/Au:N/C:P/I:N/A:N
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
vendor_ubuntu5.5MEDIUM
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Ubuntu
Xen vulnerabilities
vendor_ubuntu·2022-09-19·CVSS 5.5
CVE-2020-25599 [MEDIUM] Xen vulnerabilities
Title: Xen vulnerabilities
Summary: Several security issues were fixed in Xen.
It was discovered that memory contents previously stored in
microarchitectural special registers after RDRAND, RDSEED, and SGX EGETKEY
read operations on Intel client and Xeon E3 processors may be briefly
exposed to processes on the same or different processor cores. A local
attacker could use this to expose sensitive information. (CVE-2020-0543)
Julien Grall discovered that Xen incorrectly handled memory barriers on
ARM-based systems. An attacker could possibly use this issue to cause a
denial of service, obtain sensitive information or escalate privileges.
(CVE-2020-11739)
Ilja Van Sprundel discovered that Xen incorrectly handled profiling of
guests. An unprivileged attacker could use this issue to obtain
Red Hat
xen: xenoprof issue allows guest OS users without active profiling to obtain sensitive information about other guests (XSA-313)
vendor_redhat·2020-04-14·CVSS 5.5
CVE-2020-11740 [MEDIUM] CWE-862 xen: xenoprof issue allows guest OS users without active profiling to obtain sensitive information about other guests (XSA-313)
xen: xenoprof issue allows guest OS users without active profiling to obtain sensitive information about other guests (XSA-313)
An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (without active profiling) to obtain sensitive information about other guests. Unprivileged guests can request to map xenoprof buffers, even if profiling has not been enabled for those guests. These buffers were not scrubbed.
A flaw was found in xenoprof in Xen through versions 4.13.x. Unprivileged guests can request to map xenoprof buffers, even if profiling has not been enabled for those guests to obtain sensitive information about other guests. The highest threat from this vulnerability is to data confidentiality.
Package: kernel-xen (Red Hat Enterprise Linux 5) - Out of suppo
Debian
CVE-2020-11740: xen - An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS use...
vendor_debian·2020·CVSS 5.5
CVE-2020-11740 [MEDIUM] CVE-2020-11740: xen - An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS use...
An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (without active profiling) to obtain sensitive information about other guests. Unprivileged guests can request to map xenoprof buffers, even if profiling has not been enabled for those guests. These buffers were not scrubbed.
Scope: local
bookworm: resolved (fixed in 4.11.4-1)
bullseye: resolved (fixed in 4.11.4-1)
forky: resolved (fixed in 4.11.4-1)
sid: resolved (fixed in 4.11.4-1)
trixie: resolved (fixed in 4.11.4-1)
OSV
xen vulnerabilities
osv·2022-09-19·CVSS 5.5
CVE-2020-0543 [MEDIUM] xen vulnerabilities
xen vulnerabilities
It was discovered that memory contents previously stored in
microarchitectural special registers after RDRAND, RDSEED, and SGX EGETKEY
read operations on Intel client and Xeon E3 processors may be briefly
exposed to processes on the same or different processor cores. A local
attacker could use this to expose sensitive information. (CVE-2020-0543)
Julien Grall discovered that Xen incorrectly handled memory barriers on
ARM-based systems. An attacker could possibly use this issue to cause a
denial of service, obtain sensitive information or escalate privileges.
(CVE-2020-11739)
Ilja Van Sprundel discovered that Xen incorrectly handled profiling of
guests. An unprivileged attacker could use this issue to obtain sensitive
information from other guests, cause a denial of s
GHSA
GHSA-cjpx-2x82-p6v9: An issue was discovered in xenoprof in Xen through 4
ghsa_unreviewed·2022-05-24
CVE-2020-11740 [LOW] CWE-200 GHSA-cjpx-2x82-p6v9: An issue was discovered in xenoprof in Xen through 4
An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (without active profiling) to obtain sensitive information about other guests. Unprivileged guests can request to map xenoprof buffers, even if profiling has not been enabled for those guests. These buffers were not scrubbed.
OSV
CVE-2020-11740: An issue was discovered in xenoprof in Xen through 4
osv·2020-04-14·CVSS 5.5
CVE-2020-11740 [MEDIUM] CVE-2020-11740: An issue was discovered in xenoprof in Xen through 4
An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (without active profiling) to obtain sensitive information about other guests. Unprivileged guests can request to map xenoprof buffers, even if profiling has not been enabled for those guests. These buffers were not scrubbed.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2020-11740 xen: xenoprof issue allows guest OS users without active profiling to obtain sensitive information about other guests (XSA-313) [fedora-all]
bugzilla·2020-04-14·CVSS 5.5
CVE-2020-11740 [MEDIUM] CVE-2020-11740 xen: xenoprof issue allows guest OS users without active profiling to obtain sensitive information about other guests (XSA-313) [fedora-all]
CVE-2020-11740 xen: xenoprof issue allows guest OS users without active profiling to obtain sensitive information about other guests (XSA-313) [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and th
Bugzilla
CVE-2020-11740 xen: xenoprof issue allows guest OS users without active profiling to obtain sensitive information about other guests (XSA-313)
bugzilla·2020-04-14·CVSS 5.5
CVE-2020-11740 [MEDIUM] CVE-2020-11740 xen: xenoprof issue allows guest OS users without active profiling to obtain sensitive information about other guests (XSA-313)
CVE-2020-11740 xen: xenoprof issue allows guest OS users without active profiling to obtain sensitive information about other guests (XSA-313)
An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (without active profiling) to obtain sensitive information about other guests. Unprivileged guests can request to map xenoprof buffers, even if profiling has not been enabled for those guests. These buffers were not scrubbed.
Reference:
https://xenbits.xen.org/xsa/advisory-313.html
Discussion:
Created xen tracking bugs for this issue:
Affects: fedora-all [bug 1823912]
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00006.htmlhttp://www.openwall.com/lists/oss-security/2020/04/14/1http://xenbits.xen.org/xsa/advisory-313.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5M2XRNCHOGGTJQBZQJ7DCV6ZNAKN3LE2/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NVTP4OYHCTRU3ONFJOFJQVNDFB25KLLG/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YMAW7D2MP6RE4BFI5BZWOBBWGY3VSOFN/https://security.gentoo.org/glsa/202005-08https://www.debian.org/security/2020/dsa-4723https://xenbits.xen.org/xsa/advisory-313.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-05/msg00006.htmlhttp://www.openwall.com/lists/oss-security/2020/04/14/1http://xenbits.xen.org/xsa/advisory-313.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5M2XRNCHOGGTJQBZQJ7DCV6ZNAKN3LE2/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NVTP4OYHCTRU3ONFJOFJQVNDFB25KLLG/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YMAW7D2MP6RE4BFI5BZWOBBWGY3VSOFN/https://security.gentoo.org/glsa/202005-08https://www.debian.org/security/2020/dsa-4723https://xenbits.xen.org/xsa/advisory-313.html
2020-04-14
Published