CVE-2005-3357

CVE-2005-3357 is a medium-severity vulnerability in Apache Http Server with a CVSS 2.0 base score of 5.4. Its EPSS exploit-prediction score of 24% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-399.

Key facts

Description

mod_ssl in Apache 2.0 up to 2.0.55, when configured with an SSL vhost with access control and a custom error 400 error page, allows remote attackers to cause a denial of service (application crash) via a non-SSL request to an SSL port, which triggers a NULL pointer dereference.

Frequently asked questions

What is CVE-2005-3357?
mod_ssl in Apache 2.0 up to 2.0.55, when configured with an SSL vhost with access control and a custom error 400 error page, allows remote attackers to cause a denial of service (application crash) via a non-SSL request to an SSL port, which triggers a NULL pointer dereference.
How severe is CVE-2005-3357?
CVE-2005-3357 has a CVSS 2.0 base score of 5.4, rated medium severity.
Is CVE-2005-3357 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 24% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-3357?
CVE-2005-3357 primarily affects Apache Http Server. In total, 26 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2005-3357?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2005-3357 published?
CVE-2005-3357 was published on 2005-12-31 and last updated on 2026-06-16.

References

Affected products (26)

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