CVE-2004-0079

CVE-2004-0079 is a high-severity vulnerability in Cisco Ciscoworks Common Management Foundation with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

• Severity: High (CVSS 3.x base score 7.5)
• CVSS v2: 5.0
• EPSS exploit prediction: 10% (95th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-476
• Affected product: Cisco Ciscoworks Common Management Foundation
• Published: 2004-11-23
• Last modified: 2026-06-16

Description

The do_change_cipher_spec function in OpenSSL 0.9.6c to 0.9.6k, and 0.9.7a to 0.9.7c, allows remote attackers to cause a denial of service (crash) via a crafted SSL/TLS handshake that triggers a null dereference.

Frequently asked questions

What is CVE-2004-0079?

The do_change_cipher_spec function in OpenSSL 0.9.6c to 0.9.6k, and 0.9.7a to 0.9.7c, allows remote attackers to cause a denial of service (crash) via a crafted SSL/TLS handshake that triggers a null dereference.

How severe is CVE-2004-0079?

CVE-2004-0079 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2004-0079 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-0079?

CVE-2004-0079 primarily affects Cisco Ciscoworks Common Management Foundation. In total, 252 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2004-0079?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2004-0079 published?

CVE-2004-0079 was published on 2004-11-23 and last updated on 2026-06-16.

References

• ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-04:05.openssl.asc
• ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2004-005.txt.asc
• ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2004.10/SCOSA-2004.10.txt
• http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000834
• http://docs.info.apple.com/article.html?artnum=61798
• http://fedoranews.org/updates/FEDORA-2004-095.shtml
• http://lists.apple.com/archives/security-announce/2005//Aug/msg00001.html
• http://lists.apple.com/archives/security-announce/2005/Aug/msg00000.html
• http://lists.apple.com/mhonarc/security-announce/msg00045.html
• http://marc.info/?l=bugtraq&m=107953412903636&w=2
• http://marc.info/?l=bugtraq&m=108403806509920&w=2
• http://secunia.com/advisories/11139
• http://secunia.com/advisories/17381
• http://secunia.com/advisories/17398
• http://secunia.com/advisories/17401
• http://secunia.com/advisories/18247
• http://security.gentoo.org/glsa/glsa-200403-03.xml
• http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert/57524
• http://support.avaya.com/elmodocs2/security/ASA-2005-239.htm
• http://support.lexmark.com/index?page=content&id=TE88&locale=EN&userlocale=EN_US
• http://www.ciac.org/ciac/bulletins/o-101.shtml
• http://www.cisco.com/warp/public/707/cisco-sa-20040317-openssl.shtml
• http://www.debian.org/security/2004/dsa-465
• http://www.kb.cert.org/vuls/id/288574
• http://www.linuxsecurity.com/advisories/engarde_advisory-4135.html
• http://www.mandriva.com/security/advisories?name=MDKSA-2004:023
• http://www.novell.com/linux/security/advisories/2004_07_openssl.html
• http://www.openssl.org/news/secadv_20040317.txt
• http://www.redhat.com/archives/fedora-announce-list/2005-October/msg00087.html
• http://www.redhat.com/support/errata/RHSA-2004-120.html

Affected products (252)

• cpe:2.3:h:cisco:firewall_services_module:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:firewall_services_module:1.1.2:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:firewall_services_module:1.1.3:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:firewall_services_module:1.1_\(3.005\):*:*:*:*:*:*:*
• cpe:2.3:h:cisco:firewall_services_module:2.1_\(0.208\):*:*:*:*:*:*:*
• cpe:2.3:h:hp:aaa_server:*:*:*:*:*:*:*:*
• cpe:2.3:h:hp:apache-based_web_server:2.0.43.00:*:*:*:*:*:*:*
• cpe:2.3:h:hp:apache-based_web_server:2.0.43.04:*:*:*:*:*:*:*
• cpe:2.3:h:symantec:clientless_vpn_gateway_4400:5.0:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:ciscoworks_common_management_foundation:2.1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:ciscoworks_common_services:2.2:*:*:*:*:*:*:*
• cpe:2.3:h:avaya:converged_communications_server:2.0:*:*:*:*:*:*:*
• cpe:2.3:h:avaya:sg200:4.4:*:*:*:*:*:*:*
• cpe:2.3:h:avaya:sg200:4.31.29:*:*:*:*:*:*:*
• cpe:2.3:h:avaya:sg203:4.4:*:*:*:*:*:*:*
• cpe:2.3:h:avaya:sg203:4.31.29:*:*:*:*:*:*:*
• cpe:2.3:h:avaya:sg208:*:*:*:*:*:*:*:*
• cpe:2.3:h:avaya:sg208:4.4:*:*:*:*:*:*:*
• cpe:2.3:h:avaya:sg5:4.2:*:*:*:*:*:*:*
• cpe:2.3:h:avaya:sg5:4.3:*:*:*:*:*:*:*
• cpe:2.3:h:avaya:sg5:4.4:*:*:*:*:*:*:*
• cpe:2.3:o:apple:mac_os_x:10.3.3:*:*:*:*:*:*:*
• cpe:2.3:o:apple:mac_os_x_server:10.3.3:*:*:*:*:*:*:*
• cpe:2.3:o:freebsd:freebsd:4.8:*:*:*:*:*:*:*
• cpe:2.3:o:freebsd:freebsd:4.8:releng:*:*:*:*:*:*
• cpe:2.3:o:freebsd:freebsd:4.9:*:*:*:*:*:*:*
• cpe:2.3:o:freebsd:freebsd:5.1:*:*:*:*:*:*:*
• cpe:2.3:o:freebsd:freebsd:5.1:release:*:*:*:*:*:*
• cpe:2.3:o:freebsd:freebsd:5.1:releng:*:*:*:*:*:*
• cpe:2.3:o:freebsd:freebsd:5.2:*:*:*:*:*:*:*
• cpe:2.3:o:freebsd:freebsd:5.2.1:release:*:*:*:*:*:*
• cpe:2.3:o:hp:hp-ux:8.05:*:*:*:*:*:*:*
• cpe:2.3:o:hp:hp-ux:11.00:*:*:*:*:*:*:*
• cpe:2.3:o:hp:hp-ux:11.11:*:*:*:*:*:*:*
• cpe:2.3:o:hp:hp-ux:11.23:*:*:*:*:*:*:*
• cpe:2.3:o:openbsd:openbsd:3.3:*:*:*:*:*:*:*
• cpe:2.3:o:openbsd:openbsd:3.4:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux:3.0:*:advanced_server:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux:3.0:*:enterprise_server:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux:3.0:*:workstation_server:*:*:*:*:*

More vulnerabilities in Cisco Ciscoworks Common Management Foundation

• CVE-2003-0731 — Critical (CVSS 10.0): CiscoWorks Common Management Foundation (CMF) 2.1 and earlier allows the guest user to gain administrative privileges…
• CVE-2003-0732 — Critical (CVSS 10.0): CiscoWorks Common Management Foundation (CMF) 2.1 and earlier allows the guest user to obtain restricted information…
• CVE-2005-0356 — Medium (CVSS 5.0): Multiple TCP implementations with Protection Against Wrapped Sequence Numbers (PAWS) with the timestamps option enabled…
• CVE-2004-0112 — Medium (CVSS 5.0): The SSL/TLS handshaking code in OpenSSL 0.9.7a, 0.9.7b, and 0.9.7c, when using Kerberos ciphersuites, does not properly…
• CVE-2004-0081 — Medium (CVSS 5.0): OpenSSL 0.9.6 before 0.9.6d does not properly handle unknown message types, which allows remote attackers to cause a…

All CVEs affecting Cisco Ciscoworks Common Management Foundation →

Other CWE-476 (NULL Pointer Dereference) vulnerabilities

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• CVE-2020-14500 — Critical (CVSS 10.0): Secomea GateManager all versions prior to 9.2c, An attacker can send a negative value and overwrite arbitrary data.
• CVE-2010-2495 — Critical (CVSS 10.0): The pppol2tp_xmit function in drivers/net/pppol2tp.c in the L2TP implementation in the Linux kernel before 2.6.34 does…
• CVE-2026-46195 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: smb: client: validate dacloffset before building…
• CVE-2026-31657 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: batman-adv: hold claim backbone gateways by…
• CVE-2026-31436 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: fix possible wrong descriptor…

Browse all CWE-476 (NULL Pointer Dereference) vulnerabilities →