A denial of service via a crafted SSL/TLS handshake in OpenSSL



Published: 2004-11-23 | Updated: 2016-08-02
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2004-0079
CWE-ID CWE-476
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		OpenSSL
Server applications / Encryption software

Vendor OpenSSL Software Foundation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) A denial of service via a crafted SSL/TLS handshake

EUVDB-ID: #VU260

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2004-0079

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to denial of service.

The vulnerability exists due to the do_change_cipher_spec function in OpenSSL. A remote unauthenticated attacker can cause a denial of service (crash) via a crafted SSL/TLS handshake that triggers a null dereference.

Successful exploitation of this vulnerability may result in denial of service.

Mitigation

Upgrate your version to OpenSSL 0.9.6m, OpenSSL 0.9.7d.

Vulnerable software versions

OpenSSL: 0.9.6 - 0.9.7c

External links

http://www.openssl.org/news/vulnerabilities.html#y2002


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



###SIDEBAR###