CVE-2012-0256

CVE-2012-0256 is a medium-severity vulnerability in Apache Traffic Server with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Description

Apache Traffic Server 2.0.x and 3.0.x before 3.0.4 and 3.1.x before 3.1.3 does not properly allocate heap memory, which allows remote attackers to cause a denial of service (daemon crash) via a long HTTP Host header.

Frequently asked questions

What is CVE-2012-0256?
Apache Traffic Server 2.0.x and 3.0.x before 3.0.4 and 3.1.x before 3.1.3 does not properly allocate heap memory, which allows remote attackers to cause a denial of service (daemon crash) via a long HTTP Host header.
How severe is CVE-2012-0256?
CVE-2012-0256 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2012-0256 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-0256?
CVE-2012-0256 primarily affects Apache Traffic Server. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-0256?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-0256 published?
CVE-2012-0256 was published on 2012-03-26 and last updated on 2026-06-16.

References

Affected products (20)

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