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Ubuntu Security Notice USN-3805-1

Ubuntu Security Notice USN-3805-1
Posted Oct 31, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3805-1 - 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. 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. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2018-16839, CVE-2018-16840, CVE-2018-16842
SHA-256 | d55ced143953522e7a9be8d94b62af9c7f502fd22672af3f7506ef921fcbe897

Ubuntu Security Notice USN-3805-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3805-1
October 31, 2018

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:

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 LTS:
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 LTS:
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 LTS:
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:
https://usn.ubuntu.com/usn/usn-3805-1
CVE-2018-16839, CVE-2018-16840, CVE-2018-16842

Package Information:
https://launchpad.net/ubuntu/+source/curl/7.61.0-1ubuntu2.2
https://launchpad.net/ubuntu/+source/curl/7.58.0-2ubuntu3.5
https://launchpad.net/ubuntu/+source/curl/7.47.0-1ubuntu2.11
https://launchpad.net/ubuntu/+source/curl/7.35.0-1ubuntu2.19
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