4.3

CVE-2010-0433: openssl Improper Input Validation

Modified
Published 05-03-2010Last modified 07-08-2024

Vulnerability summary

CVE-2010-0433 is a medium (CVSS 4.3) Improper Input Validation vulnerability in openssl. EPSS estimates a 7.86% chance of exploitation in the next 30 days, higher than 94.7% of scored vulnerabilities.

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
7.86%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1
RHSA-2010:0162

Timeline

  1. 05-03-2010
    PublishedVulnerability first disclosed.
  2. 07-08-2024
    Last modifiedVulnerability information updated.

Description

The kssl_keytab_is_available function in ssl/kssl.c in OpenSSL before 0.9.8n, when Kerberos is enabled but Kerberos configuration files cannot be opened, does not check a certain return value, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via SSL cipher negotiation, as demonstrated by a chroot installation of Dovecot or stunnel without Kerberos configuration files inside the chroot.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

7.86%

Chance of exploitation in the next 30 days

Percentile

95%

Versus all other CVEs

30-day change

No change 0.00 pp

From 7.86% 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

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

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

Openssl1 product
  • opensslEOL≤ 0.9.8m | 0.9.8 | 0.9.8a | 0.9.8b | 0.9.8c | 0.9.8d | 0.9.8e | 0.9.8f | 0.9.8g | 0.9.8h | 0.9.8i | 0.9.8j | 0.9.8k | 0.9.8l

1 vendor · 1 product

References

31 links
Show all 31 references