A SPIP security update has been released for Ubuntu Linux 18.04 LTS and 21.10.

USN-5482-1: SPIP vulnerabilities

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Ubuntu Security Notice USN-5482-1
June 16, 2022

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

- Ubuntu 21.10
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in SPIP.

Software Description:
- spip: website engine for publishing

Details:

It was discovered that SPIP incorrectly validated inputs. An authenticated
attacker could possibly use this issue to execute arbitrary code.
(CVE-2020-28984)

Charles Fol and Théo Gordyjan discovered that SPIP is vulnerable to Cross
Site Scripting (XSS). If a user were tricked into browsing a malicious SVG
file, an attacker could possibly exploit this issue to execute arbitrary
code. This issue was only fixed in Ubuntu 21.10. (CVE-2021-44118,
CVE-2021-44120, CVE-2021-44122, CVE-2021-44123)

It was discovered that SPIP incorrectly handled certain forms. A remote
authenticated editor could possibly use this issue to execute arbitrary code,
and a remote unauthenticated attacker could possibly use this issue to obtain
sensitive information. (CVE-2022-26846, CVE-2022-26847)

Update instructions:

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

Ubuntu 21.10:
spip 3.2.11-3+deb11u3build0.21.10.1

Ubuntu 18.04 LTS:
spip 3.1.4-4~deb9u5build0.18.04.1

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

References:
  https://ubuntu.com/security/notices/USN-5482-1
CVE-2020-28984, CVE-2021-44118, CVE-2021-44120, CVE-2021-44122,
CVE-2021-44123, CVE-2022-26846, CVE-2022-26847

Package Information:
  https://launchpad.net/ubuntu/+source/spip/3.2.11-3+deb11u3build0.21.10.1
  https://launchpad.net/ubuntu/+source/spip/3.1.4-4~deb9u5build0.18.04.1