Debian LTS: DLA-1568-1: curl security update
Summary
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.
CVE-2016-7167
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
overflow.
CVE-2016-9586
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
attacks.
CVE-2018-16839
Curl is vulnerable to a buffer overrun in the SASL authentication
code that may lead to denial of service.
CVE-2018-16842
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
