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Fencer Vulns
medium 4.3

CVE-2006-4343 json

The get_server_hello function in the SSLv2 client code in OpenSSL 0.9.7 before 0.9.7l, 0.9.8 before 0.9.8d, and earlier versions allows rem…

published 2006-09-28 20 y ago modified 2026-06-16 4 mo ago also EUVD-2006-4331

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
19.4%
EPSS 19.4% chance of exploitation in 30 days, percentile 97%
public exploits
2
Exploit-DB

Summary

The get_server_hello function in the SSLv2 client code in OpenSSL 0.9.7 before 0.9.7l, 0.9.8 before 0.9.8d, and earlier versions allows remote servers to cause a denial of service (client crash) via unknown vectors that trigger a null pointer dereference.

Patch / fix

  • openssl Debian 14, Debian 13, Debian 12 0.9.8c-2

debian advisories DEBIAN-CVE-2006-4343

  • rhn-solaris-bootstrap network satellite 5.1 5.1.1-3
  • rhn_solaris_bootstrap_5_1_1_3 network satellite 5.1 1-0
  • rhn-solaris-bootstrap network satellite 5.0, network satellite 4.2 5.0.2-3
  • rhn_solaris_bootstrap_5_0_2_3 network satellite 5.0, network satellite 4.2 1-0
  • openssl RHEL 2.1 0.9.6b-46
  • openssl RHEL 3 0.9.7a-33.21
  • openssl RHEL 4 0.9.7a-43.14
  • openssl096 RHEL 2.1 0.9.6-32

red hat advisories RHSA-2008:0629RHSA-2008:0525RHSA-2008:0264RHSA-2006:0695

  • openssl-1_0_0 openSUSE Tumbleweed 1.0.2u-6.2
  • openssl-1_1 openSUSE Tumbleweed 1.1.1l-1.2

opensuse advisories openSUSE-SU-2024:11126-1openSUSE-SU-2024:11127-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2006-4343 updated

openssl sslv2 client code

  • Red Hat Desktop version 3 openssl 0.9.7a-33.21, openssl096b 0.9.6b-16.46, openssl-perl 0.9.7a-33.21 Red Hat Enterprise Linux AS (Advanced Server) version 2.1 openssl 0.9.6b-46, openssl096 0.9.6-32, openssl095a 0.9.5a-32, openssl-perl 0.9.6b-46 Red Hat Enterprise Linux AS version 3 openssl 0.9.7a-33.21, openssl096b 0.9.6b-16.46, openssl-perl 0.9.7a-33.21 Red Hat Enterprise Linux AS version 4 openssl 0.9.7a-43.14, openssl096b 0.9.6b-22.46, openssl-perl 0.9.7a-43.14 Red Hat Enterprise Linux Desktop version 4 openssl 0.9.7a-43.14, openssl096b 0.9.6b-22.46, openssl-perl 0.9.7a-43.14 Red Hat Enterprise Linux ES version 2.1 openssl 0.9.6b-46, openssl-perl 0.9.6b-46
    +6 more products
    Red Hat Enterprise Linux ES version 3 openssl 0.9.7a-33.21, openssl096b 0.9.6b-16.46, openssl-perl 0.9.7a-33.21 Red Hat Enterprise Linux ES version 4 openssl 0.9.7a-43.14, openssl096b 0.9.6b-22.46, openssl-perl 0.9.7a-43.14 Red Hat Enterprise Linux WS version 2.1 openssl 0.9.6b-46, openssl-perl 0.9.6b-46 Red Hat Enterprise Linux WS version 3 openssl 0.9.7a-33.21, openssl096b 0.9.6b-16.46, openssl-perl 0.9.7a-33.21 Red Hat Enterprise Linux WS version 4 openssl 0.9.7a-43.14, openssl096b 0.9.6b-22.46, openssl-perl 0.9.7a-43.14 Red Hat Linux Advanced Workstation 2.1 openssl 0.9.6b-46, openssl096 0.9.6-32, openssl095a 0.9.5a-32, openssl-perl 0.9.6b-46
    fixed: vendor fix RHSA-2006:0695
  • Red Hat Satellite 5.0 (RHEL v.4 AS) rhn-solaris-bootstrap 5.0.2-3, rhn_solaris_bootstrap_5_0_2_3 1-0
    fixed: vendor fix RHSA-2008:0264
  • Red Hat Satellite 5.1 (RHEL v.4 AS) rhn-solaris-bootstrap 5.1.1-3, rhn_solaris_bootstrap_5_1_1_3 1-0
    fixed: vendor fix RHSA-2008:0629
  • Red Hat Satellite v 4.2 (RHEL v.3 AS) rhn-solaris-bootstrap 5.0.2-3, rhn_solaris_bootstrap_5_0_2_3 1-0 Red Hat Satellite v 4.2 (RHEL v.4 AS) rhn-solaris-bootstrap 5.0.2-3, rhn_solaris_bootstrap_5_0_2_3 1-0
    fixed: vendor fix RHSA-2008:0525

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. First public exploit (EDB-28726)
  2. Published

Exploit prediction

19.41% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-28726 OpenSSL SSLv2 - Null Pointer Dereference Client Denial of Service dos, 2006-09-28
  • EDB-4773 OpenSSL < 0.9.7l/0.9.8d - SSLv2 Client Crash dos, 2007-12-23

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.