python-certifi: Insufficient Verification of Data Authenticity
CVE-2023-37920 is a critical-severity insufficient verification of data authenticity vulnerability in python-certifi from Certifi, with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected python-certifi versions: >= 2015.04.28, < 2023.07.22. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.57% chance of exploitation within 30 days, which is low compared with other CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update Certifi to 2023.7.22 or a later version.
- Read the advisory on github.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Certifi | python-certifi | >= 2015.04.28, < 2023.07.22 | Not stated |
| Certifi | Certifi | 2015.4.28 up to, but not including, 2023.7.22 | 2023.7.22 |
| Fedora Project | Fedora | 38 | Not stated |
| NetApp | Active Iq Unified Manager | Not specified in the record | Not stated |
| NetApp | Management Services For Element Software | Not specified in the record | Not stated |
| NetApp | Management Services For Netapp Hci | Not specified in the record | Not stated |
| NetApp | Ontap Mediator | Not specified in the record | Not stated |
| NetApp | Ontap Select Deploy Administration Utility | Not specified in the record | Not stated |
| NetApp | Solidfire & Hci Storage Node | Not specified in the record | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.5 | High | CNA (github.com) |
| CVSS 3.1 | 9.8 | Critical | NVD |
Official description
Certifi is a curated collection of Root Certificates for validating the trustworthiness of SSL certificates while verifying the identity of TLS hosts. Certifi prior to version 2023.07.22 recognizes "e-Tugra" root certificates. e-Tugra's root certificates were subject to an investigation prompted by reporting of security issues in their systems. Certifi 2023.07.22 removes root certificates from "e-Tugra" from the root store.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Insufficient Verification of Data Authenticity
The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.
More Insufficient Verification of Data Authenticity vulnerabilities (CWE-345)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
Third-party and government advisories
- groups.google.com/a/mozilla.org/g/dev-security-policy/c/C-HrP1SEq1AMailing List, Third Party Advisory
- security.netapp.com/advisory/ntap-20240912-0002/Third Party Advisory
Other references
Other vulnerabilities in python-certifi
- 7.5 High severity
- 7.5 High severity
Recent Insufficient Verification of Data Authenticity vulnerabilities
- 9.8 Critical severity
- 7.8 High severity
- 7.8 High severity
- 9.8 Critical severity
- 9.8 Critical severity
- 7.2 High severity
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