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Servers and applications

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.

Severity
Medium 5.0
Published
26 Mar 2012
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
3.3% in the next 30 daysHigher than 88% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Memory buffer errors (CWE-119)
Attack
Over the network · No login needed
Attacker can
Slow it down
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Sources
NVD

Affected software

SoftwareAffected versions
Apache Traffic ServerServers and applications · cpe:a:apache:traffic_server
  • Version 3.1.2
  • Version 3.1.1
  • Version 3.1.0
  • Version 3.0.3
All 20 release lines
  • Version 2.0.0-alpha
  • Version 2.0.0
  • Version 2.0.1
  • Version 2.1.0
  • Version 2.1.1
  • Version 2.1.2
  • Version 2.1.3
  • Version 2.1.4
  • Version 2.1.5
  • Version 2.1.6
  • Version 2.1.7
  • Version 2.1.8
  • Version 2.1.9
  • Version 3.0.0
  • Version 3.0.1
  • Version 3.0.2
  • Version 3.0.3
  • Version 3.1.0
  • Version 3.1.1
  • Version 3.1.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2012-0256
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2012-0256