https://github.com/curl/curl: Exposure of Resource to Wrong Sphere
CVE-2022-32221 is a critical-severity exposure of resource to wrong sphere vulnerability in https://github.com/curl/curl, 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 https://github.com/curl/curl versions: Fixed in 7.86.0. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 5.12% chance of exploitation within 30 days, which is in the top 7.48% of all scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update SIMATIC S7-1500 CPU 1518-4 PN/DP MFP to V3.1.5 or a later version.
- Update SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP to V3.1.5 or a later version.
- Update SIPLUS S7-1500 CPU 1518-4 PN/DP MFP to V3.1.5 or a later version.
- 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 |
|---|---|---|---|
| Https://github.com/curl/curl | https://github.com/curl/curl | Fixed in 7.86.0 | Not stated |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | V3.1.0 up to, but not including, V3.1.5 | V3.1.5 |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | V3.1.0 up to, but not including, V3.1.5 | V3.1.5 |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP | V3.1.0 up to, but not including, V3.1.5 | V3.1.5 |
| Haxx | Curl | before 7.86.0 | 7.86.0 |
| NetApp | Clustered Data Ontap | Not specified in the record | Not stated |
| NetApp | H300s Firmware | Not specified in the record | Not stated |
| NetApp | H500s Firmware | Not specified in the record | Not stated |
| NetApp | H700s Firmware | Not specified in the record | Not stated |
| NetApp | H410s Firmware | Not specified in the record | Not stated |
| Debian | Debian Linux | 10.0; 11.0 | Not stated |
| Apple | macOS | before 12.6.3 | 12.6.3 |
| Splunk | Universal Forwarder | 8.2.0 up to, but not including, 8.2.12; 9.0.0 up to, but not including, 9.0.6; 9.1.0 | 8.2.12, 9.0.6 |
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 | 9.8 | Critical | NVD |
| CVSS 3.1 | 9.8 | Critical | CISA (ADP) |
Official description
When doing HTTP(S) transfers, libcurl might erroneously use the read callback (`CURLOPT_READFUNCTION`) to ask for data to send, even when the `CURLOPT_POSTFIELDS` option has been set, if the same handle previously was used to issue a `PUT` request which used that callback. This flaw may surprise the application and cause it to misbehave and either send off the wrong data or use memory after free or similar in the subsequent `POST` request. The problem exists in the logic for a reused handle when it is changed from a PUT to a POST.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Exposure of Resource to Wrong Sphere
The product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource.
More Exposure of Resource to Wrong Sphere vulnerabilities (CWE-668)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: poc, automatable: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- seclists.org/fulldisclosure/2023/Jan/19Mailing List, Third Party Advisory
- seclists.org/fulldisclosure/2023/Jan/20Mailing List, Third Party Advisory
- lists.debian.org/debian-lts-announce/2023/01/msg00028.htmlMailing List, Third Party Advisory
- security.gentoo.org/glsa/202212-01Third Party Advisory
- security.netapp.com/advisory/ntap-20230110-0006/Third Party Advisory
- security.netapp.com/advisory/ntap-20230208-0002/Third Party Advisory
- support.apple.com/kb/HT213604Third Party Advisory
- support.apple.com/kb/HT213605Third Party Advisory
- debian.org/security/2023/dsa-5330Third Party Advisory
Technical write-ups (may include proof of concept)
- hackerone.com/reports/1704017Exploit, Issue Tracking, Third Party Advisory
Other references
Other vulnerabilities in https://github.com/curl/curl
- 7.5 High severity
- 8.8 High severity
- 8.8 High severity
- 9.1 Critical severity
- 7.5 High severity
- 9.8 Critical severity
Recent Exposure of Resource to Wrong Sphere vulnerabilities
- 7.8 High severity
- 8.1 High severity
- 7.1 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
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