Security Vulnerabilities - CVEs Published In January 2024
When a transaction is committed, C Xenstored will first check
the quota is correct before attempting to commit any nodes. It would
be possible that accounting is temporarily negative if a node has
been removed outside of the transaction.
Unfortunately, some versions of C Xenstored are assuming that the
quota cannot be negative and are using assert() to confirm it. This
will lead to C Xenstored crash when tools are built without -DNDEBUG
(this is the default).
CVSS Score
5.5
EPSS Score
0.001
Published
2024-01-05
Closing of an event channel in the Linux kernel can result in a deadlock.
This happens when the close is being performed in parallel to an unrelated
Xen console action and the handling of a Xen console interrupt in an
unprivileged guest.
The closing of an event channel is e.g. triggered by removal of a
paravirtual device on the other side. As this action will cause console
messages to be issued on the other side quite often, the chance of
triggering the deadlock is not neglectable.
Note that 32-bit Arm-guests are not affected, as the 32-bit Linux kernel
on Arm doesn't use queued-RW-locks, which are required to trigger the
issue (on Arm32 a waiting writer doesn't block further readers to get
the lock).
CVSS Score
4.9
EPSS Score
0.001
Published
2024-01-05
[This CNA information record relates to multiple CVEs; the
text explains which aspects/vulnerabilities correspond to which CVE.]
libfsimage contains parsing code for several filesystems, most of them based on
grub-legacy code. libfsimage is used by pygrub to inspect guest disks.
Pygrub runs as the same user as the toolstack (root in a priviledged domain).
At least one issue has been reported to the Xen Security Team that allows an
attacker to trigger a stack buffer overflow in libfsimage. After further
analisys the Xen Security Team is no longer confident in the suitability of
libfsimage when run against guest controlled input with super user priviledges.
In order to not affect current deployments that rely on pygrub patches are
provided in the resolution section of the advisory that allow running pygrub in
deprivileged mode.
CVE-2023-4949 refers to the original issue in the upstream grub
project ("An attacker with local access to a system (either through a
disk or external drive) can present a modified XFS partition to
grub-legacy in such a way to exploit a memory corruption in grub’s XFS
file system implementation.") CVE-2023-34325 refers specifically to
the vulnerabilities in Xen's copy of libfsimage, which is decended
from a very old version of grub.
CVSS Score
7.8
EPSS Score
0.001
Published
2024-01-05
The caching invalidation guidelines from the AMD-Vi specification (48882—Rev
3.07-PUB—Oct 2022) is incorrect on some hardware, as devices will malfunction
(see stale DMA mappings) if some fields of the DTE are updated but the IOMMU
TLB is not flushed.
Such stale DMA mappings can point to memory ranges not owned by the guest, thus
allowing access to unindented memory regions.
CVSS Score
7.8
EPSS Score
0.001
Published
2024-01-05
[This CNA information record relates to multiple CVEs; the
text explains which aspects/vulnerabilities correspond to which CVE.]
AMD CPUs since ~2014 have extensions to normal x86 debugging functionality.
Xen supports guests using these extensions.
Unfortunately there are errors in Xen's handling of the guest state, leading
to denials of service.
1) CVE-2023-34327 - An HVM vCPU can end up operating in the context of
a previous vCPUs debug mask state.
2) CVE-2023-34328 - A PV vCPU can place a breakpoint over the live GDT.
This allows the PV vCPU to exploit XSA-156 / CVE-2015-8104 and lock
up the CPU entirely.
CVSS Score
5.5
EPSS Score
0.001
Published
2024-01-05
[This CNA information record relates to multiple CVEs; the
text explains which aspects/vulnerabilities correspond to which CVE.]
AMD CPUs since ~2014 have extensions to normal x86 debugging functionality.
Xen supports guests using these extensions.
Unfortunately there are errors in Xen's handling of the guest state, leading
to denials of service.
1) CVE-2023-34327 - An HVM vCPU can end up operating in the context of
a previous vCPUs debug mask state.
2) CVE-2023-34328 - A PV vCPU can place a breakpoint over the live GDT.
This allows the PV vCPU to exploit XSA-156 / CVE-2015-8104 and lock
up the CPU entirely.
CVSS Score
5.5
EPSS Score
0.001
Published
2024-01-05
An OS command injection vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow authenticated administrators to execute commands via a network.
We have already fixed the vulnerability in the following versions:
QTS 5.1.3.2578 build 20231110 and later
QuTS hero h5.1.3.2578 build 20231110 and later
CVSS Score
6.6
EPSS Score
0.001
Published
2024-01-05
A vulnerability classified as problematic has been found in IceWarp 12.0.2.1/12.0.3.1. This affects an unknown part of the file /install/ of the component Utility Download Handler. The manipulation of the argument lang with the input 1%27"()%26%25<zzz><ScRiPt>alert(document.domain)</ScRiPt> leads to cross site scripting. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-249759. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
CVSS Score
4.3
EPSS Score
0.001
Published
2024-01-05
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Suman Bhattarai Send Users Email.This issue affects Send Users Email: from n/a through 1.4.3.
CVSS Score
5.3
EPSS Score
0.002
Published
2024-01-05
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in webvitaly iframe allows Stored XSS.This issue affects iframe: from n/a through 4.8.
CVSS Score
6.5
EPSS Score
0.001
Published
2024-01-05