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CVE Record

CVE-2003-1564: libxml2, possibly before 2.5.0, does not properly detect recursion during entity expansion, which allows co...

libxml2, possibly before 2.5.0, does not properly detect recursion during entity expansion, which allows context-dependent attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, aka the "billion laughs attack."

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

This is an old libxml2 denial-of-service issue. A specially crafted XML file can make vulnerable parsers consume excessive CPU and memory during entity expansion, potentially slowing or crashing services that process untrusted XML. Exposure is most likely in applications or services that parse XML from users, partners, uploads, APIs, feeds, or messages using affected libxml2 builds. Systems that do not process untrusted XML are less exposed. Treat this as a targeted availability risk, not confirmed widespread exploitation. Prioritize internet-facing or business-critical systems that parse XML, especially legacy platforms with old libxml2 packages. Mitigation focus: Inventory libxml2 versions across servers, containers, and bundled applications.; Apply vendor-supported libxml2 security updates where available.; Prioritize externally reachable XML ingestion paths for remediation..

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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