Ubuntu 6922 Published by

Ubuntu has issued two security updates: USN-7713-1 addressing vulnerabilities in OpenLDAP and USN-7710-2 resolving a vulnerability in Python 2.7. The OpenLDAP update affects Ubuntu 14.04 LTS, while the Python update affects Ubuntu versions 16.04 LTS, 18.04 LTS, 20.04 LTS, and 22.04 LTS. The resolved issues encompass the incorrect parsing of X.509 DNs by OpenLDAP, which had the potential to lead to a denial of service (CVE-2020-36229, CVE-2020-36230), as well as the inefficient parsing of maliciously crafted HTML input and Tar archives by Python (CVE-2025-6069, CVE-2025-8194).

[USN-7713-1] OpenLDAP vulnerabilities
[USN-7710-2] Python 2.7 vulnerability




[USN-7713-1] OpenLDAP vulnerabilities


==========================================================================
Ubuntu Security Notice USN-7713-1
August 24, 2025

openldap vulnerabilities
==========================================================================

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

- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in OpenLDAP.

Software Description:
- openldap: Lightweight Directory Access Protocol

Details:

It was discovered that OpenLDAP incorrectly handled X.509 DN parsing. A
remote attacker could possibly use this issue to cause OpenLDAP to crash,
resulting in a denial of service. (CVE-2020-36229, CVE-2020-36230)

Pasi Saarinen discovered that OpenLDAP incorrectly handled certain short
timestamps. A remote attacker could possibly use this issue to cause
OpenLDAP to crash, resulting in a denial of service. (CVE-2021-27212)

Update instructions:

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

Ubuntu 14.04 LTS
slapd 2.4.31-1+nmu2ubuntu8.5+esm8
Available with Ubuntu Pro

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

References:
https://ubuntu.com/security/notices/USN-7713-1
CVE-2020-36229, CVE-2020-36230, CVE-2021-27212



[USN-7710-2] Python 2.7 vulnerability


==========================================================================
Ubuntu Security Notice USN-7710-2
August 29, 2025

python2.7 vulnerability
==========================================================================

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

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in Python.

Software Description:
- python2.7: An interactive high-level object-oriented language

Details:

USN-7710-1 fixed vulnerabilities in Python. This update provides the
corresponding fix for CVE-2025-8194 for Python 2.7.

Original advisory details:

It was discovered that Python inefficiently parsed maliciously crafted
HTML input. An attacker could possibly use this issue to cause a denial of
service. (CVE-2025-6069)

It was discovered that Python incorrectly parsed maliciously crafted Tar
archives. An attacker could possibly use this issue to cause a denial of
service. (CVE-2025-8194)

Update instructions:

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

Ubuntu 22.04 LTS
libpython2.7 2.7.18-13ubuntu1.5+esm7
Available with Ubuntu Pro
python2.7 2.7.18-13ubuntu1.5+esm7
Available with Ubuntu Pro

Ubuntu 20.04 LTS
libpython2.7 2.7.18-1~20.04.7+esm8
Available with Ubuntu Pro
python2.7 2.7.18-1~20.04.7+esm8
Available with Ubuntu Pro

Ubuntu 18.04 LTS
libpython2.7 2.7.17-1~18.04ubuntu1.13+esm12
Available with Ubuntu Pro
python2.7 2.7.17-1~18.04ubuntu1.13+esm12
Available with Ubuntu Pro

Ubuntu 16.04 LTS
libpython2.7 2.7.12-1ubuntu0~16.04.18+esm17
Available with Ubuntu Pro
python2.7 2.7.12-1ubuntu0~16.04.18+esm17
Available with Ubuntu Pro

Ubuntu 14.04 LTS
libpython2.7 2.7.6-8ubuntu0.6+esm26
Available with Ubuntu Pro
python2.7 2.7.6-8ubuntu0.6+esm26
Available with Ubuntu Pro

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

References:
https://ubuntu.com/security/notices/USN-7710-2
https://ubuntu.com/security/notices/USN-7710-1
CVE-2025-8194