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Ubuntu Security Notice USN-3993-1

Ubuntu Security Notice USN-3993-1
Posted May 22, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3993-1 - Wenchao Li discovered that curl incorrectly handled memory in the curl_url_set function. A remote attacker could use this issue to cause curl to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 19.04. It was discovered that curl incorrectly handled memory when receiving data from a TFTP server. A remote attacker could use this issue to cause curl to crash, resulting in a denial of service, or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2019-5435, CVE-2019-5436
MD5 | 7a6b2a7276dd51ccf6aa6ba7840777a5

Ubuntu Security Notice USN-3993-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3993-1
May 22, 2019

curl vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.04
- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in curl.

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

Details:

Wenchao Li discovered that curl incorrectly handled memory in the
curl_url_set() function. A remote attacker could use this issue to cause
curl to crash, resulting in a denial of service, or possibly execute
arbitrary code. This issue only affected Ubuntu 19.04. (CVE-2019-5435)

It was discovered that curl incorrectly handled memory when receiving data
from a TFTP server. A remote attacker could use this issue to cause curl to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2019-5436)

Update instructions:

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

Ubuntu 19.04:
curl 7.64.0-2ubuntu1.1
libcurl3-gnutls 7.64.0-2ubuntu1.1
libcurl3-nss 7.64.0-2ubuntu1.1
libcurl4 7.64.0-2ubuntu1.1

Ubuntu 18.10:
curl 7.61.0-1ubuntu2.4
libcurl3-gnutls 7.61.0-1ubuntu2.4
libcurl3-nss 7.61.0-1ubuntu2.4
libcurl4 7.61.0-1ubuntu2.4

Ubuntu 18.04 LTS:
curl 7.58.0-2ubuntu3.7
libcurl3-gnutls 7.58.0-2ubuntu3.7
libcurl3-nss 7.58.0-2ubuntu3.7
libcurl4 7.58.0-2ubuntu3.7

Ubuntu 16.04 LTS:
curl 7.47.0-1ubuntu2.13
libcurl3 7.47.0-1ubuntu2.13
libcurl3-gnutls 7.47.0-1ubuntu2.13
libcurl3-nss 7.47.0-1ubuntu2.13

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

References:
https://usn.ubuntu.com/usn/usn-3993-1
CVE-2019-5435, CVE-2019-5436

Package Information:
https://launchpad.net/ubuntu/+source/curl/7.64.0-2ubuntu1.1
https://launchpad.net/ubuntu/+source/curl/7.61.0-1ubuntu2.4
https://launchpad.net/ubuntu/+source/curl/7.58.0-2ubuntu3.7
https://launchpad.net/ubuntu/+source/curl/7.47.0-1ubuntu2.13

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