Debian Security Advisory

DSA-4633-1 curl -- security update

Date Reported:
22 Feb 2020
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 929351, Bug 940009, Bug 940010.
In Mitre's CVE dictionary: CVE-2019-5436, CVE-2019-5481, CVE-2019-5482.
More information:

Multiple vulnerabilities were discovered in cURL, an URL transfer library.

  • CVE-2019-5436

    A heap buffer overflow in the TFTP receiving code was discovered, which could allow DoS or arbitrary code execution. This only affects the oldstable distribution (stretch).

  • CVE-2019-5481

    Thomas Vegas discovered a double-free in the FTP-KRB code, triggered by a malicious server sending a very large data block.

  • CVE-2019-5482

    Thomas Vegas discovered a heap buffer overflow that could be triggered when a small non-default TFTP blocksize is used.

For the oldstable distribution (stretch), these problems have been fixed in version 7.52.1-5+deb9u10.

For the stable distribution (buster), these problems have been fixed in version 7.64.0-4+deb10u1.

We recommend that you upgrade your curl packages.

For the detailed security status of curl please refer to its security tracker page at: