Debian DSA-1970-1 : openssl - denial of service

medium Nessus Plugin ID 44835



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


It was discovered that a significant memory leak could occur in OpenSSL, related to the reinitialization of zlib. This could result in a remotely exploitable denial of service vulnerability when using the Apache httpd server in a configuration where mod_ssl, mod_php5, and the php5-curl extension are loaded.


Upgrade the openssl packages. You also need to restart the Apache httpd server to make sure it uses the updated libraries.

The old stable distribution (etch) is not affected by this issue.

For the stable distribution (lenny), this problem has been fixed in version 0.9.8g-15+lenny6.

The packages for the arm architecture are not included in this advisory. They will be released as soon as they become available.

See Also

Plugin Details

Severity: Medium

ID: 44835

File Name: debian_DSA-1970.nasl

Version: 1.11

Type: local

Agent: unix

Published: 2/24/2010

Updated: 1/4/2021

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Nessus Agent

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:openssl, 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: 1/13/2010

Reference Information

CVE: CVE-2009-4355

BID: 31692

CWE: 399

DSA: 1970