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Ubuntu: USN-6641-1 Moderate: Curl Cookie Bypass Attacks

ubuntu
Calendar Grey February 19, 2024
Dist Ubuntu Esm H88
Ubuntu Security Notification USN-6641-2 addresses a flaw found in curl that allows for bypassing cookie verification in the specified versions.
curl could be made to set cookies that would bypass PSL checks.

Summary

curl could be made to set cookies that would bypass PSL checks.

Software Description:

- curl: HTTP, HTTPS, and FTP client and client libraries

Details:

Harry Sintonen discovered that curl incorrectly handled mixed case cookie

domains. A remote attacker could possibly use this issue to set cookies

that get sent to different and unrelated sites and domains.

Topics%20covered

Topics Covered

security advisory security issue software update remote attack Ubuntu curl cookie bypass

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   curl                            7.58.0-2ubuntu3.24+esm3
   libcurl3-gnutls            7.58.0-2ubuntu3.24+esm3
   libcurl3-nss                7.58.0-2ubuntu3.24+esm3
   libcurl4                       7.58.0-2ubuntu3.24+esm3

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
   curl                            7.47.0-1ubuntu2.19+esm11
   libcurl3                       7.47.0-1ubuntu2.19+esm11
   libcurl3-gnutls            7.47.0-1ubuntu2.19+esm11
   libcurl3-nss                7.47.0-1ubuntu2.19+esm11

In general, a standard system update will make all the necessary changes.

References

  https://ubuntu.com/security/notices/USN-6641-1

  CVE-2023-46218

Ubuntu Security Notice USN-6641-1

Topics%20covered

Topics Covered

security advisory security issue software update remote attack Ubuntu curl cookie bypass

Package Information

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