USN-3805-1: curl vulnerabilities

Releases

• Ubuntu 18.10
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

Packages

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

Details

Harry Sintonen discovered that curl incorrectly handled SASL
authentication. A remote attacker could use this issue to cause curl to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2018-16839)

Brian Carpenter discovered that curl incorrectly handled memory when
closing certain handles. A remote attacker could use this issue to cause
curl to crash, resulting in a denial of service, or possibly execute
arbitrary code. (CVE-2018-16840)

Brian Carpenter discovered that the curl command-line tool incorrectly
handled error messages. A remote attacker could possibly use this issue to
obtain sensitive information. (CVE-2018-16842)

Update instructions

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

Ubuntu 18.10

• curl - 7.61.0-1ubuntu2.2
• libcurl3-gnutls - 7.61.0-1ubuntu2.2
• libcurl3-nss - 7.61.0-1ubuntu2.2
• libcurl4 - 7.61.0-1ubuntu2.2

Ubuntu 18.04

• curl - 7.58.0-2ubuntu3.5
• libcurl3-gnutls - 7.58.0-2ubuntu3.5
• libcurl3-nss - 7.58.0-2ubuntu3.5
• libcurl4 - 7.58.0-2ubuntu3.5

Ubuntu 16.04

• curl - 7.47.0-1ubuntu2.11
• libcurl3 - 7.47.0-1ubuntu2.11
• libcurl3-gnutls - 7.47.0-1ubuntu2.11
• libcurl3-nss - 7.47.0-1ubuntu2.11

Ubuntu 14.04

• curl - 7.35.0-1ubuntu2.19
• libcurl3 - 7.35.0-1ubuntu2.19
• libcurl3-gnutls - 7.35.0-1ubuntu2.19
• libcurl3-nss - 7.35.0-1ubuntu2.19

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

References

• CVE-2018-16839
• CVE-2018-16840
• CVE-2018-16842

Related notices

• USN-3805-2: libcurl3-nss, libcurl3, libcurl3-gnutls, curl