USN-3441-1: curl vulnerabilities

Releases

• Ubuntu 17.04
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

Packages

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

Details

Daniel Stenberg discovered that curl incorrectly handled large floating
point output. 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 14.04 LTS and Ubuntu 16.04 LTS.
(CVE-2016-9586)

Even Rouault discovered that curl incorrectly handled large file names when
doing TFTP transfers. A remote attacker could use this issue to cause curl
to crash, resulting in a denial of service, or possibly obtain sensitive
memory contents. (CVE-2017-1000100)

Brian Carpenter and Yongji Ouyang discovered that curl incorrectly handled
numerical range globbing. A remote attacker could use this issue to cause
curl to crash, resulting in a denial of service, or possibly obtain
sensitive memory contents. (CVE-2017-1000101)

Max Dymond discovered that curl incorrectly handled FTP PWD responses. A
remote attacker could use this issue to cause curl to crash, resulting in a
denial of service. (CVE-2017-1000254)

Brian Carpenter discovered that curl incorrectly handled the --write-out
command line option. A local attacker could possibly use this issue to
obtain sensitive memory contents. (CVE-2017-7407)

Update instructions

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

Ubuntu 17.04

• curl - 7.52.1-4ubuntu1.2
• libcurl3 - 7.52.1-4ubuntu1.2
• libcurl3-gnutls - 7.52.1-4ubuntu1.2
• libcurl3-nss - 7.52.1-4ubuntu1.2

Ubuntu 16.04

• curl - 7.47.0-1ubuntu2.3
• libcurl3 - 7.47.0-1ubuntu2.3
• libcurl3-gnutls - 7.47.0-1ubuntu2.3
• libcurl3-nss - 7.47.0-1ubuntu2.3

Ubuntu 14.04

• curl - 7.35.0-1ubuntu2.11
• libcurl3 - 7.35.0-1ubuntu2.11
• libcurl3-gnutls - 7.35.0-1ubuntu2.11
• libcurl3-nss - 7.35.0-1ubuntu2.11

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

References

• CVE-2016-9586
• CVE-2017-1000100
• CVE-2017-1000101
• CVE-2017-1000254
• CVE-2017-7407

Related notices

• USN-3441-2: libcurl3, curl, libcurl3-gnutls, libcurl3-nss