FreshPorts - VuXML

This page displays vulnerability information about FreeBSD Ports.

The last vuln.xml file processed by FreshPorts is:

Revision:  507033
Date:      2019-07-21
Time:      03:55:06Z
Committer: acm

List all Vulnerabilities, by package

List all Vulnerabilities, by date

These are the vulnerabilities relating to the commit you have selected:

VuXML IDDescription
58685e23-ba4d-11e6-ae1b-002590263bf5xen-tools -- qemu incautious about shared ring processing

The Xen Project reports:

The compiler can emit optimizations in qemu which can lead to double fetch vulnerabilities. Specifically data on the rings shared between qemu and the hypervisor (which the guest under control can obtain mappings of) can be fetched twice (during which time the guest can alter the contents) possibly leading to arbitrary code execution in qemu.

Malicious administrators can exploit this vulnerability to take over the qemu process, elevating its privilege to that of the qemu process.

In a system not using a device model stub domain (or other techniques for deprivileging qemu), malicious guest administrators can thus elevate their privilege to that of the host.


Discovery 2016-11-22
Entry 2016-12-04
xen-tools
lt 4.7.1

CVE-2016-9381
ports/214936
https://xenbits.xen.org/xsa/advisory-197.html
47873d72-14eb-11e7-970f-002590263bf5xen-tools -- xenstore denial of service via repeated update

The Xen Project reports:

Unprivileged guests may be able to stall progress of the control domain or driver domain, possibly leading to a Denial of Service (DoS) of the entire host.


Discovery 2017-03-28
Entry 2017-03-30
xen-tools
lt 4.7.2_1

http://xenbits.xen.org/xsa/advisory-206.html
a73aba9a-effe-11e6-ae1b-002590263bf5xen-tools -- oob access in cirrus bitblt copy

The Xen Project reports:

When doing bitblt copy backwards, qemu should negate the blit width. This avoids an oob access before the start of video memory.

A malicious guest administrator can cause an out of bounds memory access, possibly leading to information disclosure or privilege escalation.


Discovery 2017-02-10
Entry 2017-02-11
xen-tools
lt 4.7.1_2

CVE-2017-2615
http://xenbits.xen.org/xsa/advisory-208.html
59f79c99-ba4d-11e6-ae1b-002590263bf5xen-tools -- delimiter injection vulnerabilities in pygrub

The Xen Project reports:

pygrub, the boot loader emulator, fails to quote (or sanity check) its results when reporting them to its caller.

A malicious guest administrator can obtain the contents of sensitive host files (an information leak). Additionally, a malicious guest administrator can cause files on the host to be removed, causing a denial of service. In some unusual host configurations, ability to remove certain files may be usable for privilege escalation.


Discovery 2016-11-22
Entry 2016-12-04
xen-tools
lt 4.7.1

CVE-2016-9379
CVE-2016-9380
ports/214936
https://xenbits.xen.org/xsa/advisory-198.html
8cbd9c08-f8b9-11e6-ae1b-002590263bf5xen-tools -- cirrus_bitblt_cputovideo does not check if memory region is safe

The Xen Project reports:

In CIRRUS_BLTMODE_MEMSYSSRC mode the bitblit copy routine cirrus_bitblt_cputovideo fails to check whether the specified memory region is safe. A malicious guest administrator can cause an out of bounds memory write, very likely exploitable as a privilege escalation.


Discovery 2017-02-21
Entry 2017-02-22
xen-tools
lt 4.7.1_4

CVE-2017-2620
http://xenbits.xen.org/xsa/advisory-209.html
af19ecd0-0f6a-11e7-970f-002590263bf5xen-tools -- Cirrus VGA Heap overflow via display refresh

The Xen Project reports:

A privileged user within the guest VM can cause a heap overflow in the device model process, potentially escalating their privileges to that of the device model process.


Discovery 2017-03-14
Entry 2017-03-23
xen-tools
lt 4.7.2

CVE-2016-9603
http://xenbits.xen.org/xsa/advisory-211.html
e589ae90-4212-11e6-942d-bc5ff45d0f28xen-tools -- Unsanitised driver domain input in libxl device handling

The Xen Project reports:

libxl's device-handling code freely uses and trusts information from the backend directories in xenstore.

A malicious driver domain can deny service to management tools.


Discovery 2016-06-02
Entry 2016-07-04
xen-tools
lt 4.7.0_1

CVE-2016-4963
http://xenbits.xen.org/xsa/advisory-178.html
06574c62-5854-11e6-b334-002590263bf5xen-tools -- virtio: unbounded memory allocation issue

The Xen Project reports:

A guest can submit virtio requests without bothering to wait for completion and is therefore not bound by virtqueue size...

A malicious guest administrator can cause unbounded memory allocation in QEMU, which can cause an Out-of-Memory condition in the domain running qemu. Thus, a malicious guest administrator can cause a denial of service affecting the whole host.


Discovery 2016-07-27
Entry 2016-08-02
xen-tools
lt 4.7.0_4

CVE-2016-5403
ports/211482
http://xenbits.xen.org/xsa/advisory-184.html
e6ce6f50-4212-11e6-942d-bc5ff45d0f28xen-tools -- QEMU: Banked access to VGA memory (VBE) uses inconsistent bounds checks

The Xen Project reports:

Qemu VGA module allows banked access to video memory using the window at 0xa00000 and it supports different access modes with different address calculations.

Qemu VGA module allows guest to edit certain registers in 'vbe' and 'vga' modes.

A privileged guest user could use CVE-2016-3710 to exceed the bank address window and write beyond the said memory area, potentially leading to arbitrary code execution with privileges of the Qemu process. If the system is not using stubdomains, this will be in domain 0.

A privileged guest user could use CVE-2016-3712 to cause potential integer overflow or OOB read access issues in Qemu, resulting in a DoS of the guest itself. More dangerous effect, such as data leakage or code execution, are not known but cannot be ruled out.


Discovery 2016-05-09
Entry 2016-07-04
xen-tools
lt 4.7.0_2

CVE-2016-3710
CVE-2016-3712
http://xenbits.xen.org/xsa/advisory-179.html
e2fca11b-4212-11e6-942d-bc5ff45d0f28xen-tools -- Unsanitised guest input in libxl device handling code

The Xen Project reports:

Various parts of libxl device-handling code inappropriately use information from (partially) guest controlled areas of xenstore.

A malicious guest administrator can cause denial of service by resource exhaustion.

A malicious guest administrator can confuse and/or deny service to management facilities.

A malicious guest administrator of a guest configured with channel devices may be able to escalate their privilege to that of the backend domain (i.e., normally, to that of the host).


Discovery 2016-06-02
Entry 2016-07-04
xen-tools
lt 4.7.0_1

CVE-2016-4962
http://xenbits.xen.org/xsa/advisory-175.html
e800cd4b-4212-11e6-942d-bc5ff45d0f28xen-tools -- Unrestricted qemu logging

The Xen Project reports:

When the libxl toolstack launches qemu for HVM guests, it pipes the output of stderr to a file in /var/log/xen. This output is not rate-limited in any way. The guest can easily cause qemu to print messages to stderr, causing this file to become arbitrarily large.

The disk containing the logfile can be exhausted, possibly causing a denial-of-service (DoS).


Discovery 2016-05-23
Entry 2016-07-04
xen-tools
lt 4.7.0_2

CVE-2014-3672
http://xenbits.xen.org/xsa/advisory-180.html