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Debian Security Advisory DSA-4633-1                   security@debian.org
https://www.debian.org/security/                       Alessandro Ghedini
February 22, 2020                     https://www.debian.org/security/faq
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Package        : curl
CVE ID         : CVE-2019-5436 CVE-2019-5481 CVE-2019-5482
Debian Bug     : 929351 940009 940010

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:
https://security-tracker.debian.org/tracker/source-package/curl

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org