[SECURITY] [DLA 1568-1] curl security update

ID DEBIAN:DLA-1568-1:3204E
Type debian
Reporter Debian
Modified 2018-11-06T21:01:31


Package : curl Version : 7.38.0-4+deb8u13 CVE ID : CVE-2016-7141 CVE-2016-7167 CVE-2016-9586 CVE-2018-16839 CVE-2018-16842 Debian Bug : 848958 837945 836918

Several vulnerabilities were discovered in cURL, an URL transfer library.


When built with NSS and the libnsspem.so library is available at
runtime, allows an remote attacker to hijack the authentication of a
TLS connection by leveraging reuse of a previously loaded client
certificate from file for a connection for which no certificate has
been set, a different vulnerability than CVE-2016-5420.


Multiple integer overflows in the (1) curl_escape, (2)
curl_easy_escape, (3) curl_unescape, and (4) curl_easy_unescape
functions in libcurl allow attackers to have unspecified impact via
a string of length 0xffffffff, which triggers a heap-based buffer


Curl is vulnerable to a buffer overflow when doing a large floating
point output in libcurl's implementation of the printf() functions.
If there are any applications that accept a format string from the
outside without necessary input filtering, it could allow remote


Curl is vulnerable to a buffer overrun in the SASL authentication
code that may lead to denial of service.


Curl is vulnerable to a heap-based buffer over-read in the
tool_msgs.c:voutf() function that may result in information exposure
and denial of service.

For Debian 8 "Jessie", these problems have been fixed in version 7.38.0-4+deb8u13.

We recommend that you upgrade your curl packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS