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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (9.54%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 9.54% probability · 95th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- cisco/firewall services module · hp/aaa server · hp/apache-based web server · symantec/clientless vpn gateway 4400 · cisco/ciscoworks common management foundation · cisco/ciscoworks common services · avaya/converged communications server · avaya/sg200 · avaya/sg203 · avaya/sg208 · avaya/sg5 · apple/mac os x · apple/mac os x server · freebsd/freebsd · hp/hp-ux · openbsd/openbsd · redhat/enterprise linux · redhat/enterprise linux desktop · redhat/linux · sco/openserver · +40 more
- Source
- cve@mitre.org
EPSS 9.5% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-04:05.openssl.ascBroken Link
- ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2004-005.txt.ascBroken Link
- ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2004.10/SCOSA-2004.10.txtBroken Link
- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000834Broken Link
- http://docs.info.apple.com/article.html?artnum=61798Broken Link
- http://fedoranews.org/updates/FEDORA-2004-095.shtmlThird Party Advisory
- http://lists.apple.com/archives/security-announce/2005//Aug/msg00001.htmlMailing List
- http://lists.apple.com/archives/security-announce/2005/Aug/msg00000.htmlMailing List
- http://lists.apple.com/mhonarc/security-announce/msg00045.htmlBroken Link
- http://marc.info/?l=bugtraq&m=107953412903636&w=2Mailing List
- http://marc.info/?l=bugtraq&m=108403806509920&w=2Mailing List
- http://secunia.com/advisories/11139Broken Link
- http://secunia.com/advisories/17381Broken Link
- http://secunia.com/advisories/17398Broken Link
- http://secunia.com/advisories/17401Broken Link
- http://secunia.com/advisories/18247Broken Link
- http://security.gentoo.org/glsa/glsa-200403-03.xmlThird Party Advisory
- http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert/57524Broken Link
- http://support.avaya.com/elmodocs2/security/ASA-2005-239.htmThird Party Advisory
- http://support.lexmark.com/index?page=content&id=TE88&locale=EN&userlocale=EN_USBroken Link
- http://www.ciac.org/ciac/bulletins/o-101.shtmlBroken Link
- http://www.cisco.com/warp/public/707/cisco-sa-20040317-openssl.shtmlBroken Link
- http://www.debian.org/security/2004/dsa-465Third Party Advisory
- http://www.kb.cert.org/vuls/id/288574Third Party Advisory, US Government Resource
- http://www.linuxsecurity.com/advisories/engarde_advisory-4135.htmlBroken Link
- http://www.mandriva.com/security/advisories?name=MDKSA-2004:023Third Party Advisory
- http://www.novell.com/linux/security/advisories/2004_07_openssl.htmlBroken Link
- http://www.openssl.org/news/secadv_20040317.txtThird Party Advisory
- http://www.redhat.com/archives/fedora-announce-list/2005-October/msg00087.htmlMailing List
- http://www.redhat.com/support/errata/RHSA-2004-120.htmlBroken Link
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.