==========================================================================
Ubuntu Security Notice USN-7476-1
May 05, 2025

python-scrapy vulnerabilities
==========================================================================

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

- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in python-scrapy.

Software Description:
- python-scrapy: Python web scraping and crawling framework

Details:

It was discovered that Scrapy improperly exposed HTTP authentication
credentials to request targets, including during redirects. An attacker
could use this issue to gain unauthorized access to user accounts. This
issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-41125)

It was discovered that Scrapy did not remove the cookie header during
cross-domain redirects. An attacker could possibly use this issue to gain
unauthorized access to user accounts. This issue only affected Ubuntu 18.04
LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2022-0577)

It was discovered that Scrapy inefficiently parsed XML content. An
attacker could use this issue to cause a denial of service by sending a
crafted XML response. This issue only affected Ubuntu 18.04 LTS,
Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2024-1892)

It was discovered that Scrapy did not properly check response size during
decompression. An attacker could send a crafted response that would
exhaust memory and cause a denial of service. This issue only affected
Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2024-3572)

It was discovered that Scrapy did not remove the authorization header
during cross-domain redirects. An attacker could possibly use this issue
to gain unauthorized access to user accounts. This issue only affected
Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2024-3574)

It was discovered that Scrapy did not remove the authorization header
during redirects that change scheme but remain in the same domain. This
issue could possibly be used by an attacker to expose sensitive
information or to gain unauthorized access to user accounts.
(CVE-2024-1968)

Update instructions:

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

Ubuntu 24.04 LTS
  python3-scrapy                  2.11.1-1ubuntu0.1~esm2
                                  Available with Ubuntu Pro

Ubuntu 22.04 LTS
  python3-scrapy                  2.5.1-2ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 20.04 LTS
  python3-scrapy                  1.7.3-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  python-scrapy                   1.5.0-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  python3-scrapy                  1.5.0-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro

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

References:
  https://ubuntu.com/security/notices/USN-7476-1
  CVE-2021-41125, CVE-2022-0577, CVE-2024-1892, CVE-2024-1968,
  CVE-2024-3572, CVE-2024-3574