The Solaris pollset feature in the Event Port backend in poll/unix/port.c in the Apache Portable Runtime (APR) library before 1.3.9, as used in the Apache HTTP Server before 2.2.14 and other products, does not properly handle errors, which allows remote attackers to cause a denial of service (daemon hang) via unspecified HTTP requests, related to the prefork and event MPMs.

Threat-Mapped Scoring

Score: 1.5

Priority: P4 - Informational (Low)

• S10 – Denial of Service

EPSS

Score: 0.08727
Percentile: 0.92086

CVSS Scoring

Mapped CWE(s)

• CWE-667 : Improper Locking

All CAPEC(s)

CAPEC(s) with Mapped TTPs

Mapped ATT&CK TTPs

• T1499.004 : Application or System Exploitation
  Kill Chain: impact

Malware

APTs Threat Group Associations

Campaigns

Affected Products

• cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
• cpe:2.3:a:apache:portable_runtime:*:*:*:*:*:*:*:*

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