The Cybersecurity and Infrastructure Safety Company (CISA) has issued an pressing alert concerning a newly found and actively exploited vulnerability within the extensively used Apache HTTP Server.
The flaw, catalogued as CVE-2024-38475, impacts the server’s mod_rewrite module and poses vital dangers to organizations worldwide.
Particulars of the Vulnerability
CVE-2024-38475 is classed as an “improper escaping of output vulnerability,” as outlined in Widespread Weak point Enumeration (CWE-116).
It permits malicious actors to craft particular URL requests that, when processed by the server’s mod_rewrite engine, direct the applying to serve recordsdata from filesystem areas that might in any other case not be straight accessible through the Web.
In line with CISA, this vulnerability might permit attackers to execute arbitrary code or entry delicate supply code saved on the server.
The improper dealing with of output by mod_rewrite primarily breaks the anticipated safety boundaries, exposing crucial recordsdata or enabling server compromise.
The Apache HTTP Server is among the mostly used internet servers globally, powering tens of millions of internet sites and internet functions in each private and non-private sectors.
Safety researchers have confirmed that this vulnerability has been actively exploited within the wild, though, as of this writing, there is no such thing as a proof linking it to recognized ransomware campaigns.
“Whereas it stays unclear whether or not the vulnerability has been weaponized for ransomware, its readiness for exploitation locations numerous methods prone to knowledge leaks and additional assaults,” stated a CISA spokesperson. “Directors ought to take into account this a crucial risk.”
Beneficial Actions
CISA urges all organizations utilizing Apache HTTP Server to instantly overview their deployments and take the next actions:
- Apply mitigations as specified by the Apache Software program Basis, together with any accessible safety patches or configuration adjustments.
- Comply with BOD 22-01 steering for cloud-based Apache HTTP providers. The Binding Operational Directive mandates swift response to extreme vulnerabilities affecting federal businesses however serves as a best-practice information to all enterprises.
- Discontinue use of weak server variations if mitigations are unavailable.
Organizations are suggested to finish these actions by Could 22, 2025, to keep away from potential exploitation and guarantee continued compliance with federal cybersecurity requirements.
With the addition of CVE-2024-38475 to CISA’s Catalog of Identified Exploited Vulnerabilities, the company underscores the necessity for ongoing vigilance.
Directors ought to monitor official vendor communications and CISA advisories for additional updates.
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