What is CVE-2021-32557?

CVE-2021-32557 is a vulnerability in Canonical Apport that allows arbitrary file writes via symlinks.

What is the severity of CVE-2021-32557?

CVE-2021-32557 has a severity of 7.1 (high).

How does CVE-2021-32557 affect Canonical Apport?

CVE-2021-32557 affects Canonical Apport versions between 2.14.1-0ubuntu3 and 2.14.1-0ubuntu3.29+esm7, 2.20.1-0ubuntu2 and 2.20.1-0ubuntu2.30+esm1, 2.20.9 and 2.20.9-0ubuntu7.24, 2.20.11-0ubuntu27 and 2.20.11-0ubuntu27.18, 2.20.11-0ubuntu50 and 2.20.11-0ubuntu50.7, and 2.20.11-0ubuntu65 and 2.20.11-0ubuntu65.1.

How can arbitrary file writes be performed via symlinks in CVE-2021-32557?

The process_report() function in data/whoopsie-upload-all allows attackers to perform arbitrary file writes by creating specially crafted symlinks.

Is there a fix for CVE-2021-32557?

Yes, updating Canonical Apport to versions after the mentioned vulnerable versions will fix CVE-2021-32557.

Vulnerability/
CVE-2021-32557

high

7.1

CWE

59 61

25/5/2021

3/8/2024

CVE-2021-32557: apport process_report() arbitrary file write

First published: Tue May 25 2021(Updated: )

It was discovered that the process_report() function in data/whoopsie-upload-all allowed arbitrary file writes via symlinks.

Credit: security@ubuntu.com

Affected Software	Affected Version	How to fix
Canonical Apport	>=2.14.1-0ubuntu3<2.14.1-0ubuntu3.29\+esm7
Canonical Apport	>=2.20.1<2.20.1-0ubuntu2.30\+esm1
Canonical Apport	>=2.20.9<2.20.9-0ubuntu7.24
Canonical Apport	>=2.20.11-0ubuntu27<2.20.11-0ubuntu27.18
Canonical Apport	>=2.20.11-0ubuntu50<2.20.11-0ubuntu50.7
Canonical Apport	>=2.20.11-0ubuntu65<2.20.11-0ubuntu65.1

Never miss a vulnerability like this again

Reference Links

https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1917904

Frequently Asked Questions

What is CVE-2021-32557?
CVE-2021-32557 is a vulnerability in Canonical Apport that allows arbitrary file writes via symlinks.
What is the severity of CVE-2021-32557?
CVE-2021-32557 has a severity of 7.1 (high).
How does CVE-2021-32557 affect Canonical Apport?
CVE-2021-32557 affects Canonical Apport versions between 2.14.1-0ubuntu3 and 2.14.1-0ubuntu3.29+esm7, 2.20.1-0ubuntu2 and 2.20.1-0ubuntu2.30+esm1, 2.20.9 and 2.20.9-0ubuntu7.24, 2.20.11-0ubuntu27 and 2.20.11-0ubuntu27.18, 2.20.11-0ubuntu50 and 2.20.11-0ubuntu50.7, and 2.20.11-0ubuntu65 and 2.20.11-0ubuntu65.1.
How can arbitrary file writes be performed via symlinks in CVE-2021-32557?
The process_report() function in data/whoopsie-upload-all allows attackers to perform arbitrary file writes by creating specially crafted symlinks.
Is there a fix for CVE-2021-32557?
Yes, updating Canonical Apport to versions after the mentioned vulnerable versions will fix CVE-2021-32557.

collector/nvd-index
agent/weakness
agent/type
agent/softwarecombine
collector/mitre-cve
source/MITRE
agent/severity
agent/title
agent/references
agent/author
agent/last-modified-date
agent/tags
agent/description
agent/first-publish-date
agent/event
vendor/canonical
canonical/canonical apport
version/canonical apport/2.14.1-0ubuntu3
version/canonical apport/2.20.1
version/canonical apport/2.20.9
version/canonical apport/2.20.11-0ubuntu27
version/canonical apport/2.20.11-0ubuntu50
version/canonical apport/2.20.11-0ubuntu65

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.