Debian DSA-1904-1 : wget - insufficient input validation

medium Nessus Plugin ID 44769

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Synopsis

The remote Debian host is missing a security-related update.

Description

Daniel Stenberg discovered that wget, a network utility to retrieve files from the Web using HTTP(S) and FTP, is vulnerable to the 'Null Prefix Attacks Against SSL/TLS Certificates' published at the Blackhat conference some time ago. This allows an attacker to perform undetected man-in-the-middle attacks via a crafted ITU-T X.509 certificate with an injected null byte in the Common Name field.

Solution

Upgrade the wget packages.

For the oldstable distribution (etch), this problem has been fixed in version 1.10.2-2+etch1.

For the stable distribution (lenny), this problem has been fixed in version 1.11.4-2+lenny1.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=549293

https://www.debian.org/security/2009/dsa-1904

Plugin Details

Severity: Medium

ID: 44769

File Name: debian_DSA-1904.nasl

Version: 1.12

Type: local

Agent: unix

Published: 2/24/2010

Updated: 1/4/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:wget, cpe:/o:debian:debian_linux:4.0, cpe:/o:debian:debian_linux:5.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/9/2009

Reference Information

CVE: CVE-2009-3490

BID: 36205

DSA: 1904

CWE: 310