CVE-2006-4343: canonical ubuntu_linux NULL Pointer Dereference

Modified

AliasesDEBIAN-CVE-2006-4343

Published 28-09-2006Last modified 07-08-2024

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Vulnerability summary

CVE-2006-4343 is a medium (CVSS 4.3) NULL Pointer Dereference vulnerability in canonical ubuntu_linux. EPSS estimates a 19.41% chance of exploitation in the next 30 days, higher than 97.3% of scored vulnerabilities. 2 public exploits are recorded.

Priority

Routine

Not severe (CVSS 4.3, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?

CVSS score

4.3/10

010

Medium · v2.0 (NVD)

EPSS score

19.41%

0%100%

Medium · +0.34 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits2exploit-database

Advisory lineage

Upstream 0 · Downstream 8 · Related 2

DSA-1185-2 DSA-1195-1 OPENSUSE-SU-2024:11126-1 OPENSUSE-SU-2024:11127-1 RHSA-2006:0695 RHSA-2008:0264+2 more

Timeline

28-09-2006
PublishedVulnerability first disclosed.
07-08-2024
Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

1 score · 1 source · 1 version

v2.04.3

EPSS trend

Probability

19.41%

Chance of exploitation in the next 30 days

Percentile

97%

Versus all other CVEs

30-day change

Increase +0.34 pp

From 19.07% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs

CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

2 found

exploit-databasedosmultipleVerified
OpenSSL < 0.9.7l/0.9.8d - SSLv2 Client Crash
Maturity: poc
exploit-databasedosmultipleVerified
OpenSSL SSLv2 - Null Pointer Dereference Client Denial of Service
Maturity: poc

Weaknesses

CWE · root cause

CWE-476NULL Pointer DereferenceThe product dereferences a pointer that it expects to be valid but is NULL.

Affected systems

Version check

Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.

Debian2 products

openssl< 0.9.8c-2
debian_linuxEOL3.1

Canonical1 product

ubuntu_linuxEOL5.04 | 5.10 | 6.06

Openssl1 product

opensslEOL0.9.7 | 0.9.7a | 0.9.7b | 0.9.7c | 0.9.7d | 0.9.7e | 0.9.7f | 0.9.7g | 0.9.7h | 0.9.7i | 0.9.7j | 0.9.7k | 0.9.8 | 0.9.8a | 0.9.8b | 0.9.8c

3 vendors · 4 products

References

130 links

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