PT-2020-19718 · None · Uvicorn

Everardo Padilla Saca · Published 2020-07-27 · Updated 2023-01-31 · CVE-2020-7695

Positive Technologies (AI Summary)

CVSS v4.0

8.7

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions Uvicorn versions prior to 0.11.7

Description The issue allows attackers to exploit HTTP response splitting by adding arbitrary headers to HTTP responses or returning an arbitrary response body when crafted input is used to construct HTTP headers. This is due to CRLF sequences not being escaped in the value of HTTP headers.

Recommendations For versions prior to 0.11.7, update to version 0.11.7 or later to resolve the issue. As a temporary workaround, consider validating and sanitizing all input used to construct HTTP headers to prevent the inclusion of malicious CRLF sequences.

Exploit

Fix

Special Elements Injection

Weakness Enumeration

CWE-74

Related Identifiers

CVE-2020-7695

GHSA-F97H-2PFX-F59F

PYSEC-2020-151

SNYK-PYTHON-UVICORN-570471

Affected Products

Uvicorn

References · 13

• 🔥 https://snyk.io/vuln/SNYK-PYTHON-UVICORN-570471 · Exploit
• https://osv.dev/vulnerability/GHSA-f97h-2pfx-f59f · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2020-7695 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2020-151 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-7695 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-7695 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-7695 · Security Note
• https://ubuntu.com/security/CVE-2020-7695 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-7695 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-7695 · Vendor Advisory
• https://github.com/encode/uvicorn · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/uvicorn/PYSEC-2020-151.yaml · Note
• https://github.com/advisories/GHSA-f97h-2pfx-f59f · Note