CVE-2017-15593
published 2017-10-18CVE-2017-15593: An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to cause a denial of service (memory leak) because reference counts are mishandled.
PriorityP420medium6.5CVSS 3.0
AVLACLPRLUINSCCNINAH
EPSS
0.39%
31.4th percentile
An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to cause a denial of service (memory leak) because reference counts are mishandled.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | xen | < xen 4.8.2+xsa245-0+deb9u1 (bookworm) | xen 4.8.2+xsa245-0+deb9u1 (bookworm) |
| xen | xen | <= 4.9.0 | — |
| xen | xen | >= 0 < 4.8.2+xsa245-0+deb9u1 | 4.8.2+xsa245-0+deb9u1 |
| xen | xen | >= 0 < 4.8.2+xsa245-0+deb9u1 | 4.8.2+xsa245-0+deb9u1 |
| xen | xen | >= 0 < 4.8.2+xsa245-0+deb9u1 | 4.8.2+xsa245-0+deb9u1 |
| xen | xen | >= 0 < 4.8.2+xsa245-0+deb9u1 | 4.8.2+xsa245-0+deb9u1 |
CVSS provenance
nvdv3.06.5MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
nvdv2.04.9MEDIUMAV:L/AC:L/Au:N/C:N/I:N/A:C
osv6.5MEDIUM
vendor_debian6.5MEDIUM
vendor_redhat6.5MEDIUM
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GHSA
GHSA-j465-85mv-hcv9: An issue was discovered in Xen through 4
ghsa_unreviewed·2022-05-13
CVE-2017-15593 [MEDIUM] CWE-772 GHSA-j465-85mv-hcv9: An issue was discovered in Xen through 4
An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to cause a denial of service (memory leak) because reference counts are mishandled.
OSV
CVE-2017-15593: An issue was discovered in Xen through 4
osv·2017-10-18·CVSS 6.5
CVE-2017-15593 [MEDIUM] CVE-2017-15593: An issue was discovered in Xen through 4
An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to cause a denial of service (memory leak) because reference counts are mishandled.
Red Hat
xen: page type reference leak on x86 (XSA-242)
vendor_redhat·2017-10-12·CVSS 6.5
CVE-2017-15593 [MEDIUM] xen: page type reference leak on x86 (XSA-242)
xen: page type reference leak on x86 (XSA-242)
An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to cause a denial of service (memory leak) because reference counts are mishandled.
Package: xen (Red Hat Enterprise Linux 5) - Not affected
Debian
CVE-2017-15593: xen - An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to c...
vendor_debian·2017·CVSS 6.5
CVE-2017-15593 [MEDIUM] CVE-2017-15593: xen - An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to c...
An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to cause a denial of service (memory leak) because reference counts are mishandled.
Scope: local
bookworm: resolved (fixed in 4.8.2+xsa245-0+deb9u1)
bullseye: resolved (fixed in 4.8.2+xsa245-0+deb9u1)
forky: resolved (fixed in 4.8.2+xsa245-0+deb9u1)
sid: resolved (fixed in 4.8.2+xsa245-0+deb9u1)
trixie: resolved (fixed in 4.8.2+xsa245-0+deb9u1)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2017-15588 CVE-2017-15589 CVE-2017-15590 CVE-2017-15591 CVE-2017-15592 CVE-2017-15593 CVE-2017-15594 CVE-2017-15595 xen: various flaws [fedora-all]
bugzilla·2017-10-12·CVSS 7.8
CVE-2017-15588 [HIGH] CVE-2017-15588 CVE-2017-15589 CVE-2017-15590 CVE-2017-15591 CVE-2017-15592 CVE-2017-15593 CVE-2017-15594 CVE-2017-15595 xen: various flaws [fedora-all]
CVE-2017-15588 CVE-2017-15589 CVE-2017-15590 CVE-2017-15591 CVE-2017-15592 CVE-2017-15593 CVE-2017-15594 CVE-2017-15595 xen: various flaws [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
fe
Bugzilla
CVE-2017-15593 xsa242 xen: page type reference leak on x86 (XSA-242)
bugzilla·2017-10-09·CVSS 6.5
CVE-2017-15593 [MEDIUM] CVE-2017-15593 xsa242 xen: page type reference leak on x86 (XSA-242)
CVE-2017-15593 xsa242 xen: page type reference leak on x86 (XSA-242)
ISSUE DESCRIPTION
The page type system of Xen requires cleanup when the last reference
for a given page is being dropped. In order to exclude simultaneous
updates to a given page by multiple parties, pages which are updated
are locked beforehand. This locking includes temporarily increasing
the type reference count by one. When the page is later unlocked, the
context precludes cleanup, so the reference that is then dropped must
not be the last one. This was not properly enforced.
IMPACT
A malicious or buggy PV guest may cause a memory leak upon shutdown
of the guest, ultimately perhaps resulting in Denial of Service (DoS)
affecting the entire host.
VULNERABLE SYSTEMS
All Xen versions from 3.4 onwards are vulnerable.
http://www.securitytracker.com/id/1039568https://lists.debian.org/debian-lts-announce/2017/11/msg00027.htmlhttps://lists.debian.org/debian-lts-announce/2018/10/msg00021.htmlhttps://security.gentoo.org/glsa/201801-14https://support.citrix.com/article/CTX228867https://www.debian.org/security/2017/dsa-4050https://xenbits.xen.org/xsa/advisory-242.htmlhttp://www.securitytracker.com/id/1039568https://lists.debian.org/debian-lts-announce/2017/11/msg00027.htmlhttps://lists.debian.org/debian-lts-announce/2018/10/msg00021.htmlhttps://security.gentoo.org/glsa/201801-14https://support.citrix.com/article/CTX228867https://www.debian.org/security/2017/dsa-4050https://xenbits.xen.org/xsa/advisory-242.html
2017-10-18
Published