Security readout for executives and security teams
Plain-English summary
libcurl could mix up how it sends data when an application reuses the same transfer handle. After a PUT using a read callback, a later POST configured with fixed POST data could still call the old callback. That can leak or send unintended data, or trigger memory-safety failures in the application.
Executive priority
Prioritize remediation where libcurl is embedded in internet-facing services, data-transfer platforms, agents, or appliances. The CVSS score is critical, but business urgency should be based on confirmed vulnerable versions and whether applications use the affected handle-reuse pattern.
Technical view
CVE-2022-32221 is POST-after-PUT state confusion in libcurl HTTP(S) transfers. A reused easy handle changed from PUT with CURLOPT_READFUNCTION to POST with CURLOPT_POSTFIELDS may erroneously request body data from the stale read callback. The source bundle says this is fixed in curl 7.86.0.
Likely exposure
Exposure is most likely in applications or appliances embedding libcurl and reusing handles across HTTP(S) PUT and POST workflows. Generic curl installation alone is not enough; the risky pattern depends on application use of CURLOPT_READFUNCTION, CURLOPT_POSTFIELDS, and handle reuse.
Exploitation context
The bundle marks KEV as false and provides no cited evidence of active exploitation. A public HackerOne report exists, and multiple vendors issued advisories, but exploitation likelihood depends on whether an application exposes attacker-influenced transfer sequencing or sensitive callback data.
Researcher notes
The key condition is a reused libcurl handle transitioning from PUT with a read callback to POST with CURLOPT_POSTFIELDS. Validate behavior without crafting weaponized payloads. Evidence in the bundle supports fixed version 7.86.0 and vendor backports, but not active exploitation.
Mitigation direction
- Upgrade curl/libcurl to 7.86.0 or a vendor-fixed package.
- Apply applicable OS or appliance advisories from Debian, Gentoo, Apple, or NetApp.
- Check vendor guidance for embedded products that bundle libcurl.
- Avoid risky handle reuse patterns until patched where application changes are practical.
Validation and detection
- Inventory curl and libcurl versions across servers, containers, appliances, and packaged applications.
- Identify applications using libcurl for HTTP(S) PUT and POST on reused handles.
- Confirm patched vendor package versions are installed after remediation.
- Review regression tests for POST-after-PUT workflows using CURLOPT_READFUNCTION and CURLOPT_POSTFIELDS.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-32221 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://hackerone.com/reports/1704017CVE reference
- GLSA-202212-01CVE reference · vendor-advisory
- https://security.netapp.com/advisory/ntap-20230110-0006/CVE reference
- https://support.apple.com/kb/HT213604CVE reference
- https://support.apple.com/kb/HT213605CVE reference
- DSA-5330CVE reference · vendor-advisory
- [debian-lts-announce] 20230128 [SECURITY] [DLA 3288-1] curl security updateCVE reference · mailing-list
- https://security.netapp.com/advisory/ntap-20230208-0002/CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.