Debian DLA-1568-1 : curl security update

High Nessus Plugin ID 118753


The remote Debian host is missing a security update.


Several vulnerabilities were discovered in cURL, an URL transfer


When built with NSS and the 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

We recommend that you upgrade your curl packages.

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA security advisory. Tenable has attempted
to automatically clean and format it as much as possible without
introducing additional issues.


Upgrade the affected packages.

See Also

Plugin Details

Severity: High

ID: 118753

File Name: debian_DLA-1568.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2018/11/07

Modified: 2018/11/07

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS v3.0

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:curl, p-cpe:/a:debian:debian_linux:libcurl3, p-cpe:/a:debian:debian_linux:libcurl3-dbg, p-cpe:/a:debian:debian_linux:libcurl3-gnutls, p-cpe:/a:debian:debian_linux:libcurl3-nss, p-cpe:/a:debian:debian_linux:libcurl4-doc, p-cpe:/a:debian:debian_linux:libcurl4-gnutls-dev, p-cpe:/a:debian:debian_linux:libcurl4-nss-dev, p-cpe:/a:debian:debian_linux:libcurl4-openssl-dev, cpe:/o:debian:debian_linux:8.0

Patch Publication Date: 2018/11/06

Reference Information

CVE: CVE-2016-7141, CVE-2016-7167, CVE-2016-9586, CVE-2018-16839, CVE-2018-16842