Description
A use after free vulnerability exists in curl <7.87.0. Curl can be asked to *tunnel* virtually all protocols it supports through an HTTP proxy. HTTP proxies can (and often do) deny such tunnel operations. When getting denied to tunnel the specific protocols SMB or TELNET, curl would use a heap-allocated struct after it had been freed, in its transfer shutdown code path.
Metrics
CVSS 3.1 5.9/10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | https://github.com/curl/curl | Fixed in curl 7.87.0 |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.0, < V3.1.5 |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.0, < V3.1.5 |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | >= V3.1.0, < V3.1.5 |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | >= V3.1.0, < V3.1.5 |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.0, < V3.1.5 |
References
- http://seclists.org/fulldisclosure/2023/Mar/17Mailing List, Third Party Advisory
- https://hackerone.com/reports/1764858Exploit, Issue Tracking, Third Party Advisory
- https://security.gentoo.org/glsa/202310-12Third Party Advisory
- https://security.netapp.com/advisory/ntap-20230214-0002/Vendor Advisory
- https://support.apple.com/kb/HT213670Third Party Advisory
- http://seclists.org/fulldisclosure/2023/Mar/17Mailing List, Third Party Advisory
- https://hackerone.com/reports/1764858Exploit, Issue Tracking, Third Party Advisory
- https://security.gentoo.org/glsa/202310-12Third Party Advisory
- https://security.netapp.com/advisory/ntap-20230214-0002/Vendor Advisory
- https://support.apple.com/kb/HT213670Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://cert-portal.siemens.com/productcert/html/ssa-892048.html
Timeline
- Published
- Feb 9, 2023
- Last modified
- Oct 23, 2026
- NVD status
- Modified