[USN-6694-1] Expat vulnerabilities
[USN-6695-1] TeX Live vulnerabilities
[USN-6673-2] python-cryptography vulnerability
[USN-6694-1] Expat vulnerabilities
==========================================================================
Ubuntu Security Notice USN-6694-1
March 14, 2024
expat vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 23.10
- Ubuntu 22.04 LTS
Summary:
Expat could be made to crash if it received specially crafted
input.
Software Description:
- expat: XML parsing C library
Details:
It was discovered that Expat could be made to consume large amounts of
resources. If a user or automated system were tricked into processing
specially crafted input, an attacker could possibly use this issue to cause
a denial of service. (CVE-2023-52425, CVE-2024-28757)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 23.10:
expat 2.5.0-2ubuntu0.1
libexpat1 2.5.0-2ubuntu0.1
Ubuntu 22.04 LTS:
expat 2.4.7-1ubuntu0.3
libexpat1 2.4.7-1ubuntu0.3
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-6694-1
CVE-2023-52425, CVE-2024-28757
Package Information:
https://launchpad.net/ubuntu/+source/expat/2.5.0-2ubuntu0.1
https://launchpad.net/ubuntu/+source/expat/2.4.7-1ubuntu0.3
[USN-6695-1] TeX Live vulnerabilities
==========================================================================
Ubuntu Security Notice USN-6695-1
March 14, 2024
texlive-bin vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 23.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
Summary:
Several security issues were fixed in TeX Live.
Software Description:
- texlive-bin: Binaries for TeX Live
Details:
It was discovered that TeX Live incorrectly handled certain memory
operations in the embedded axodraw2 tool. An attacker could possibly use
this issue to cause TeX Live to crash, resulting in a denial of service.
This issue only affected Ubuntu 20.04 LTS. (CVE-2019-18604)
It was discovered that TeX Live allowed documents to make arbitrary
network requests. If a user or automated system were tricked into opening a
specially crafted document, a remote attacker could possibly use this issue
to exfiltrate sensitive information, or perform other network-related
attacks. This issue only affected Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS.
(CVE-2023-32668)
It was discovered that TeX Live incorrectly handled certain TrueType fonts.
If a user or automated system were tricked into opening a specially crafted
TrueType font, a remote attacker could use this issue to cause TeX Live to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2024-25262)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 23.10:
texlive-binaries 2023.20230311.66589-6ubuntu0.1
texlive-binaries-sse2 2023.20230311.66589-6ubuntu0.1
Ubuntu 22.04 LTS:
texlive-binaries 2021.20210626.59705-1ubuntu0.2
Ubuntu 20.04 LTS:
texlive-binaries 2019.20190605.51237-3ubuntu0.2
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-6695-1
CVE-2019-18604, CVE-2023-32668, CVE-2024-25262
Package Information:
https://launchpad.net/ubuntu/+source/texlive-bin/2023.20230311.66589-6ubuntu0.1
https://launchpad.net/ubuntu/+source/texlive-bin/2021.20210626.59705-1ubuntu0.2
https://launchpad.net/ubuntu/+source/texlive-bin/2019.20190605.51237-3ubuntu0.2
[USN-6673-2] python-cryptography vulnerability
==========================================================================
Ubuntu Security Notice USN-6673-2
March 14, 2024
python-cryptography vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)
Summary:
python-cryptography could be made to expose sensitive information over the
network.
Software Description:
- python-cryptography: Cryptography Python library
Details:
USN-6673-1 provided a security update for python-cryptography.
This update provides the corresponding update for Ubuntu 16.04 LTS.
Original advisory details:
Hubert Kario discovered that python-cryptography incorrectly handled
errors returned by the OpenSSL API when processing incorrect padding in
RSA PKCS#1 v1.5. A remote attacker could possibly use this issue to expose
confidential or sensitive information. (CVE-2023-50782)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 LTS (Available with Ubuntu Pro):
python-cryptography 1.2.3-1ubuntu0.3+esm1
python3-cryptography 1.2.3-1ubuntu0.3+esm1
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-6673-2
https://ubuntu.com/security/notices/USN-6673-1
CVE-2023-50782
