USN-3882-1: curl vulnerabilities

6 February 2019

curl vulnerabilities

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

  • Ubuntu 18.10
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in curl.

Software Description

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

Details

Wenxiang Qian discovered that curl incorrectly handled certain NTLM authentication messages. A remote attacker could possibly use this issue to cause curl to crash, resulting in a denial of service. This issue only applied to Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 18.10. (CVE-2018-16890)

Wenxiang Qian discovered that curl incorrectly handled certain NTLMv2 authentication messages. 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 applied to Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 18.10. (CVE-2019-3822)

Brian Carpenter discovered that curl incorrectly handled certain SMTP responses. A remote attacker could possibly use this issue to cause curl to crash, resulting in a denial of service. (CVE-2019-3823)

Update instructions

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

Ubuntu 18.10
curl - 7.61.0-1ubuntu2.3
libcurl3-gnutls - 7.61.0-1ubuntu2.3
libcurl3-nss - 7.61.0-1ubuntu2.3
libcurl4 - 7.61.0-1ubuntu2.3
Ubuntu 18.04 LTS
curl - 7.58.0-2ubuntu3.6
libcurl3-gnutls - 7.58.0-2ubuntu3.6
libcurl3-nss - 7.58.0-2ubuntu3.6
libcurl4 - 7.58.0-2ubuntu3.6
Ubuntu 16.04 LTS
curl - 7.47.0-1ubuntu2.12
libcurl3 - 7.47.0-1ubuntu2.12
libcurl3-gnutls - 7.47.0-1ubuntu2.12
libcurl3-nss - 7.47.0-1ubuntu2.12
Ubuntu 14.04 LTS
curl - 7.35.0-1ubuntu2.20
libcurl3 - 7.35.0-1ubuntu2.20
libcurl3-gnutls - 7.35.0-1ubuntu2.20
libcurl3-nss - 7.35.0-1ubuntu2.20

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References