CVE-2018-7541
published 2018-02-27CVE-2018-7541: An issue was discovered in Xen through 4.10.x allowing guest OS users to cause a denial of service (hypervisor crash) or gain privileges by triggering a…
PriorityP338high8.8CVSS 3.0
AVLACLPRLUINSCCHIHAH
EPSS
0.43%
35.5th percentile
An issue was discovered in Xen through 4.10.x allowing guest OS users to cause a denial of service (hypervisor crash) or gain privileges by triggering a grant-table transition from v2 to v1.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | xen | < xen 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 (bookworm) | xen 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 (bookworm) |
| xen | xen | <= 4.10.0 | — |
| xen | xen | >= 0 < 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 | 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 |
| xen | xen | >= 0 < 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 | 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 |
| xen | xen | >= 0 < 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 | 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 |
| xen | xen | >= 0 < 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 | 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 |
CVSS provenance
nvdv3.08.8HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
nvdv2.06.1MEDIUMAV:L/AC:L/Au:N/C:P/I:P/A:C
osv8.8HIGH
vendor_debian8.8HIGH
vendor_redhat8.8HIGH
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.
GHSA
GHSA-5f4c-q2q8-8v2r: An issue was discovered in Xen through 4
ghsa_unreviewed·2022-05-13
CVE-2018-7541 [HIGH] GHSA-5f4c-q2q8-8v2r: An issue was discovered in Xen through 4
An issue was discovered in Xen through 4.10.x allowing guest OS users to cause a denial of service (hypervisor crash) or gain privileges by triggering a grant-table transition from v2 to v1.
OSV
CVE-2018-7541: An issue was discovered in Xen through 4
osv·2018-02-27·CVSS 8.8
CVE-2018-7541 [HIGH] CVE-2018-7541: An issue was discovered in Xen through 4
An issue was discovered in Xen through 4.10.x allowing guest OS users to cause a denial of service (hypervisor crash) or gain privileges by triggering a grant-table transition from v2 to v1.
Red Hat
xen: grant table v2 -> v1 transition may crash Xen (XSA-255)
vendor_redhat·2018-02-27·CVSS 8.8
CVE-2018-7541 [HIGH] xen: grant table v2 -> v1 transition may crash Xen (XSA-255)
xen: grant table v2 -> v1 transition may crash Xen (XSA-255)
An issue was discovered in Xen through 4.10.x allowing guest OS users to cause a denial of service (hypervisor crash) or gain privileges by triggering a grant-table transition from v2 to v1.
Package: xen (Red Hat Enterprise Linux 5) - Not affected
Debian
CVE-2018-7541: xen - An issue was discovered in Xen through 4.10.x allowing guest OS users to cause a...
vendor_debian·2018·CVSS 8.8
CVE-2018-7541 [HIGH] CVE-2018-7541: xen - An issue was discovered in Xen through 4.10.x allowing guest OS users to cause a...
An issue was discovered in Xen through 4.10.x allowing guest OS users to cause a denial of service (hypervisor crash) or gain privileges by triggering a grant-table transition from v2 to v1.
Scope: local
bookworm: resolved (fixed in 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5)
bullseye: resolved (fixed in 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5)
forky: resolved (fixed in 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5)
sid: resolved (fixed in 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5)
trixie: resolved (fixed in 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2018-7541 xen: xsa255 xen: grant table v2 -> v1 transition may crash Xen (XSA-255) [fedora-all]
bugzilla·2018-02-27·CVSS 8.8
CVE-2018-7541 [HIGH] CVE-2018-7541 xen: xsa255 xen: grant table v2 -> v1 transition may crash Xen (XSA-255) [fedora-all]
CVE-2018-7541 xen: xsa255 xen: grant table v2 -> v1 transition may crash Xen (XSA-255) [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 the
fedpkg commit message.
NOTE: this issue affects multi
Bugzilla
CVE-2018-7541 xsa255 xen: grant table v2 -> v1 transition may crash Xen (XSA-255)
bugzilla·2018-02-12·CVSS 8.8
CVE-2018-7541 [HIGH] CVE-2018-7541 xsa255 xen: grant table v2 -> v1 transition may crash Xen (XSA-255)
CVE-2018-7541 xsa255 xen: grant table v2 -> v1 transition may crash Xen (XSA-255)
ISSUE DESCRIPTION
Grant tables come in two flavors (versions), and domains are permitted
to freely change between them (subject to certain constraints). For
the guest to use the facility, both the "normal" shared pages
(applicable to v1 and v2) and the "status" pages (applicable to v2
only) need to be mapped by the guest into its address space.
When transitioning from v2 to v1, the status pages become unnecessary
and are therefore freed by Xen. That means Xen needs to check that
there are no mappings of those pages by the domain. However, that
check was mistakenly implemented as a bug check, rather than returning
an error to the guest.
IMPACT
A malicious or buggy guest may cause a hypervisor crash, resul
http://www.securityfocus.com/bid/103177http://www.securitytracker.com/id/1040775https://lists.debian.org/debian-lts-announce/2018/03/msg00003.htmlhttps://lists.debian.org/debian-lts-announce/2018/11/msg00013.htmlhttps://security.gentoo.org/glsa/201810-06https://support.citrix.com/article/CTX232096https://support.citrix.com/article/CTX232655https://www.debian.org/security/2018/dsa-4131https://xenbits.xen.org/xsa/advisory-255.htmlhttp://www.securityfocus.com/bid/103177http://www.securitytracker.com/id/1040775https://lists.debian.org/debian-lts-announce/2018/03/msg00003.htmlhttps://lists.debian.org/debian-lts-announce/2018/11/msg00013.htmlhttps://security.gentoo.org/glsa/201810-06https://support.citrix.com/article/CTX232096https://support.citrix.com/article/CTX232655https://www.debian.org/security/2018/dsa-4131https://xenbits.xen.org/xsa/advisory-255.html
2018-02-27
Published