USN-3882-1: 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

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

• 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

• 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

• 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

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

References

• CVE-2018-16890
• CVE-2019-3822
• CVE-2019-3823