USN-3993-1: curl vulnerabilities

Releases

• Ubuntu 19.04
• Ubuntu 18.10
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• 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

• 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

• 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

• CVE-2019-5435
• CVE-2019-5436

Related notices

• USN-3993-2: libcurl3-nss, libcurl3-udeb, libcurl4-openssl-dev, libcurl4-gnutls-dev, libcurl3-gnutls, libcurl4-doc, curl, libcurl4-nss-dev, libcurl3, curl-udeb