Ubuntu 6286 Published by

The following security updates have been released for Ubuntu Linux:

[USN-6542-1] TinyXML vulnerability
[USN-6522-2] FreeRDP vulnerabilities
[USN-6541-1] GNU C Library vulnerabilities




[USN-6542-1] TinyXML vulnerability


==========================================================================
Ubuntu Security Notice USN-6542-1
December 07, 2023

tinyxml vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)

Summary:

TinyXML could be made to crash if it opened a specially crafted
file.

Software Description:
- tinyxml: A simple, small, minimal, C++ XML parser

Details:

Wang Zhong discovered that TinyXML incorrectly handled certain inputs. If a
user or an automated system were tricked into opening a specially crafted
input file, a remote attacker could possibly use this issue to cause a
denial of service.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.04 LTS:
libtinyxml-dev 2.6.2-4+deb10u1build0.20.04.1
libtinyxml2.6.2v5 2.6.2-4+deb10u1build0.20.04.1

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
libtinyxml-dev 2.6.2-4ubuntu0.18.04.1~esm1
libtinyxml2.6.2v5 2.6.2-4ubuntu0.18.04.1~esm1

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
libtinyxml-dev 2.6.2-3ubuntu0.1~esm1
libtinyxml2.6.2v5 2.6.2-3ubuntu0.1~esm1

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-6542-1
CVE-2021-42260

Package Information:
https://launchpad.net/ubuntu/+source/tinyxml/2.6.2-4+deb10u1build0.20.04.1



[USN-6522-2] FreeRDP vulnerabilities


==========================================================================
Ubuntu Security Notice USN-6522-2
December 07, 2023

freerdp2 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS (Available with Ubuntu Pro)

Summary:

Several security issues were fixed in FreeRDP.

Software Description:
- freerdp2: RDP client for Windows Terminal Services

Details:

USN-6522-1 fixed several vulnerabilities in FreeRDP. This update provides
the corresponding update for Ubuntu 18.04 LTS.
Original advisory details:

It was discovered that FreeRDP incorrectly handled drive redirection. If a
user were tricked into connection to a malicious server, a remote attacker
could use this issue to cause FreeRDP to crash, resulting in a denial of
service, or possibly obtain sensitive information. (CVE-2022-41877)

It was discovered that FreeRDP incorrectly handled certain surface updates.
A remote attacker could use this issue to cause FreeRDP to crash, resulting
in a denial of service, or possibly execute arbitrary code.
(CVE-2023-39352, CVE-2023-39356)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
libfreerdp2-2 2.2.0+dfsg1-0ubuntu0.18.04.4+esm2

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-6522-2
https://ubuntu.com/security/notices/USN-6522-1
CVE-2022-41877, CVE-2023-39352, CVE-2023-39356



[USN-6541-1] GNU C Library vulnerabilities


==========================================================================
Ubuntu Security Notice USN-6541-1
December 07, 2023

glibc vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 23.04
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)

Summary:

Several security issues were fixed in GNU C Library.

Software Description:
- glibc: GNU C Library

Details:

It was discovered that the GNU C Library was not properly handling certain
memory operations. An attacker could possibly use this issue to cause a
denial of service (application crash). (CVE-2023-4806, CVE-2023-4813)

It was discovered that the GNU C library was not properly implementing a
fix for CVE-2023-4806 in certain cases, which could lead to a memory leak.
An attacker could possibly use this issue to cause a denial of service
(application crash). This issue only affected Ubuntu 23.04. (CVE-2023-5156)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 23.04:
libc-bin 2.37-0ubuntu2.2
libc6 2.37-0ubuntu2.2

Ubuntu 22.04 LTS:
libc-bin 2.35-0ubuntu3.5
libc6 2.35-0ubuntu3.5

Ubuntu 20.04 LTS:
libc-bin 2.31-0ubuntu9.14
libc6 2.31-0ubuntu9.14

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
libc-bin 2.27-3ubuntu1.6+esm1
libc6 2.27-3ubuntu1.6+esm1

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
libc-bin 2.23-0ubuntu11.3+esm5
libc6 2.23-0ubuntu11.3+esm5

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-6541-1
CVE-2023-4806, CVE-2023-4813, CVE-2023-5156

Package Information:
https://launchpad.net/ubuntu/+source/glibc/2.37-0ubuntu2.2
https://launchpad.net/ubuntu/+source/glibc/2.35-0ubuntu3.5
https://launchpad.net/ubuntu/+source/glibc/2.31-0ubuntu9.14