CVE-2023-52425
libexpat through 2.5.0 allows a denial of service (resource consumption) because many full reparsings are required in the case of a large token for which multiple buffer fills are needed.
Publicación Actualización
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Vulnerabilidades de vnc4 · Página 3
Vulnerabilidades publicadas para vnc4 en los últimos 30 días: 6. Incluidas en el catálogo KEV: 0.
Vulnerabilidades: 67
CVE-2022-43680
In libexpat through 2.4.9, there is a use-after free caused by overeager destruction of a shared DTD in XML_ExternalEntityParserCreate in out-of-memory situations.
Publicación ActualizaciónCVE-2022-40674
libexpat before 2.4.9 has a use-after-free in the doContent function in xmlparse.c.
Publicación ActualizaciónCVE-2022-25314
In Expat (aka libexpat) before 2.4.5, there is an integer overflow in copyString.
Publicación ActualizaciónCVE-2022-25315
In Expat (aka libexpat) before 2.4.5, there is an integer overflow in storeRawNames.
Publicación ActualizaciónCVE-2022-25313
In Expat (aka libexpat) before 2.4.5, an attacker can trigger stack exhaustion in build_model via a large nesting depth in the DTD element.
Publicación ActualizaciónCVE-2022-23852
Expat (aka libexpat) before 2.4.4 has a signed integer overflow in XML_GetBuffer, for configurations with a nonzero XML_CONTEXT_BYTES.
Publicación ActualizaciónCVE-2022-22822
addBinding in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
Publicación ActualizaciónCVE-2022-22823
build_model in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
Publicación ActualizaciónCVE-2022-22824
defineAttribute in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
Publicación ActualizaciónCVE-2022-22825
lookup in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
Publicación ActualizaciónCVE-2022-22826
nextScaffoldPart in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
Publicación ActualizaciónCVE-2022-22827
storeAtts in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
Publicación ActualizaciónCVE-2021-46143
In doProlog in xmlparse.c in Expat (aka libexpat) before 2.4.3, an integer overflow exists for m_groupSize.
Publicación ActualizaciónCVE-2021-45960
In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbehavior (e.g., allocating too few bytes, or only freeing memory).
Publicación ActualizaciónCVE-2019-15903
In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early; a consecutive call to XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber) then resulted in a heap-based buffer over-read.
Publicación ActualizaciónCVE-2018-20843
In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks).
Publicación ActualizaciónCVE-2017-9233
XML External Entity vulnerability in libexpat 2.2.0 and earlier (Expat XML Parser Library) allows attackers to put the parser in an infinite loop using a malformed external entity definition from an external DTD.
Publicación ActualizaciónCVE-2016-4472
The overflow protection in Expat is removed by compilers with certain optimization settings, which allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via crafted XML data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-1283 and CVE-2015-2716.
Publicación ActualizaciónCVE-2016-5300
The XML parser in Expat does not use sufficient entropy for hash initialization, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted identifiers in an XML document. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-0876.
Publicación Actualización
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