PT-2020-17034 · Werkzeug+1 · Werkzeug+1

Thiefmaster · Published 2020-11-18 · Updated 2021-04-20 · CVE-2020-28724

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions werkzeug versions prior to 0.11.6

Description The issue is an open redirect vulnerability via a double slash in the URL. This can be exploited in werkzeug before version 0.11.6.

Recommendations For versions prior to 0.11.6, update to version 0.11.6 or later to resolve the issue. As a temporary workaround, consider restricting URL access to prevent double slash exploitation until a patch is applied.

Exploit

Fix

Open Redirect

Weakness Enumeration

CWE-601

Related Identifiers

CVE-2020-28724

GHSA-3P3H-QGHP-HVH2

PYSEC-2020-157

USN-4655-1

Affected Products

Ubuntu

Werkzeug

References · 20

• 🔥 https://github.com/pallets/flask/issues/1639 · Exploit
• https://github.com/pallets/werkzeug/pull/890/files · Patch
• https://osv.dev/vulnerability/PYSEC-2020-157 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2020-28724 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-28724 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-28724 · Security Note
• https://osv.dev/vulnerability/CVE-2020-28724 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-28724 · Security Note
• https://osv.dev/vulnerability/USN-4655-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-14806 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-4655-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-28724 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-28724 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-3p3h-qghp-hvh2 · Vendor Advisory
• https://github.com/pallets/werkzeug/issues/822 · Note