vulnerability
Ubuntu: (Multiple Advisories) (CVE-2022-43552): curl vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:N/I:N/A:C) | Dec 21, 2022 | Jan 6, 2023 | Aug 18, 2025 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:C)
Published
Dec 21, 2022
Added
Jan 6, 2023
Modified
Aug 18, 2025
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.
Solutions
ubuntu-pro-upgrade-curlubuntu-pro-upgrade-libcurl3ubuntu-pro-upgrade-libcurl3-gnutlsubuntu-pro-upgrade-libcurl3-nssubuntu-pro-upgrade-libcurl4
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