Debian DLA-1309-1 : curl security update

critical Nessus Plugin ID 108416


The remote Debian host is missing a security update.


Multiple vulnerabilities were found in cURL, an URL transfer library :


Duy Phan Thanh reported that curl could be fooled into writing a zero byte out of bounds when curl was told to work on an FTP URL, with the setting to only issue a single CWD command. The issue could be triggered if the directory part of the URL contained a '%00' sequence.


Dario Weisser reported that curl might dereference a near-NULL address when getting an LDAP URL. A malicious server that sends a particularly crafted response could made crash applications that allowed LDAP URL relying on libcurl.


OSS-fuzz and Max Dymond found that curl can be tricked into copying data beyond the end of its heap based buffer when asked to transfer an RTSP URL. curl could calculate a wrong data length to copy from the read buffer. This could lead to information leakage or a denial of service.

For Debian 7 'Wheezy', these problems have been fixed in version 7.26.0-1+wheezy25.

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: Critical

ID: 108416

File Name: debian_DLA-1309.nasl

Version: 1.8

Type: local

Agent: unix

Published: 3/19/2018

Updated: 1/11/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent

Risk Information


Risk Factor: Medium

Score: 6.7


Risk Factor: High

Base Score: 7.5

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


Risk Factor: Critical

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-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:7.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Patch Publication Date: 3/18/2018

Reference Information

CVE: CVE-2018-1000120, CVE-2018-1000121, CVE-2018-1000122