Summary
Harry Sintonen discovered that curl incorrectly handled certain TELNET
connection options. Due to lack of proper input scrubbing, curl could pass
on user name and telnet options to the server as provided, contrary to
expectations. (CVE-2023-27533)
Harry Sintonen discovered that curl incorrectly handled special tilde
characters when used with SFTP paths. A remote attacker could possibly use
this issue to circumvent filtering. (CVE-2023-27534)
Harry Sintonen discovered that curl incorrectly reused certain FTP
connections. This could lead to the wrong credentials being reused,
contrary to expectations. (CVE-2023-27535)
Harry Sintonen discovered that curl incorrectly reused connections when the
GSS delegation option had been changed. This could lead to the option being
reused, contrary to expectations. (CVE-2023-27536)
Harry Sintonen discovered that curl incorrectly reused certain SSH
connections. This could lead to the wrong credentials being reused,
contrary to expectations. (CVE-2023-27538)
Fixed packages 3
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 18.04 LTS 18.04:LTS | curl | 7.58.0-2ubuntu3.24 |
| Ubuntu · 20.04 LTS 20.04:LTS | curl | 7.68.0-1ubuntu2.18 |
| Ubuntu · 22.04 LTS 22.04:LTS | curl | 7.81.0-1ubuntu1.10 |
Vulnerabilities 5
-
Critical 9.8
A vulnerability in input validation exists in curl <8.0 during communication using the TELNET protocol may allow an att…
-
High 8.8
A path traversal vulnerability exists in curl <8.0.0 SFTP implementation causes the tilde (~) character to be wrongly r…
-
High 7.7
An authentication bypass vulnerability exists in libcurl prior to v8.0.0 where it reuses a previously established SSH c…
-
Medium 5.9
An authentication bypass vulnerability exists in libcurl <8.0.0 in the FTP connection reuse feature that can result in …
-
Medium 5.9
An authentication bypass vulnerability exists libcurl <8.0.0 in the connection reuse feature which can reuse previously…