Debian Security Advisory

DSA-465-1 openssl -- several vulnerabilities

Date Reported:
17 Mar 2004
Affected Packages:
Security database references:
In the Bugtraq database (at SecurityFocus): BugTraq ID 9899.
In Mitre's CVE dictionary: CVE-2004-0079, CVE-2004-0081.
CERT's vulnerabilities, advisories and incident notes: VU#288574, VU#465542.
More information:

Two vulnerabilities were discovered in openssl, an implementation of the SSL protocol, using the Codenomicon TLS Test Tool. More information can be found in the following NISCC Vulnerability Advisory and this OpenSSL advisory. The Common Vulnerabilities and Exposures project identified the following vulnerabilities:

  • CAN-2004-0079

    Null-pointer assignment in the do_change_cipher_spec() function. A remote attacker could perform a carefully crafted SSL/TLS handshake against a server that used the OpenSSL library in such a way as to cause OpenSSL to crash. Depending on the application this could lead to a denial of service.

  • CAN-2004-0081

    A bug in older versions of OpenSSL 0.9.6 that can lead to a Denial of Service attack (infinite loop).

For the stable distribution (woody) these problems have been fixed in openssl version 0.9.6c-2.woody.6, openssl094 version 0.9.4-6.woody.4 and openssl095 version 0.9.5a-6.woody.5.

For the unstable distribution (sid) these problems will be fixed soon.

We recommend that you update your openssl package.

Fixed in:

Debian GNU/Linux 3.0 (woody)

Architecture-independent component:
Intel IA-32:
Intel IA-64:
Motorola 680x0:
Big endian MIPS:
Little endian MIPS:
IBM S/390:
Sun Sparc:

MD5 checksums of the listed files are available in the original advisory.