firefox: thunderbird: expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing

A memory amplification vulnerability in libexpat allows attackers to trigger excessive dynamic memory allocations by submitting specially crafted XML input. A small input 250 KiB can cause the parser to allocate hundreds of megabytes, leading to denial-of-service DoS through memory exhaustion...

firefox: thunderbird: expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing

A memory amplification vulnerability in libexpat allows attackers to trigger excessive dynamic memory allocations by submitting specially crafted XML input. A small input 250 KiB can cause the parser to allocate hundreds of megabytes, leading to denial-of-service DoS through memory exhaustion...

Security Bulletin: Security vulnerability has been found in IBM Application Gateway

Summary Security vulnerability has been addressed in IBM Application Gateway. Vulnerability Details CVEID:CVE-2023-52425 DESCRIPTION: 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...

Siemens SIMATIC S7-1500 Integer Overflow or Wraparound (CVE-2022-22824)

defineAttribute in xmlparse.c in Expat aka libexpat before 2.4.3 has an integer overflow. This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information. %NASLMINLEVEL 80900 C Tenable, Inc. include'compat.inc'; if description scriptid504346;...

Siemens SIMATIC S7-1500 Integer Overflow or Wraparound (CVE-2024-45492)

An issue was discovered in libexpat before 2.6.3. nextScaffoldPart in xmlparse.c can have an integer overflow for mgroupSize on 32-bit platforms where UINTMAX equals SIZEMAX. This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information...

Siemens SIMATIC S7-1500 Use After Free (CVE-2022-43680)

In libexpat through 2.4.9, there is a use-after free caused by overeager destruction of a shared DTD in XMLExternalEntityParserCreate in out-of-memory situations. This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information. %NASLMINLEVEL...

Siemens SIMATIC S7-1500 Incorrect Calculation of Buffer Size (CVE-2024-45490)

An issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for XMLParseBuffer. This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information. %NASLMINLEVEL 80900 C Tenable, Inc. include'compat.inc'; if...

Siemens SIMATIC and SCALANCE Uncontrolled Recursion (CVE-2024-8176)

A stack overflow vulnerability exists in the libexpat library due to the way it handles recursive entity expansion in XML documents. When parsing an XML document with deeply nested entity references, libexpat can be forced to recurse indefinitely, exhausting the stack space and causing a crash...

Siemens SIMATIC S7-1500 Uncontrolled Resource Consumption (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. This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more...

Siemens SIMATIC S7-1500 Out-of-bounds Read (CVE-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 XMLGetCurrentLineNumber or XMLGetCurrentColumnNumber then resulted in a heap-based buffer over-read. This plugin only works with Tenable.ot. Please...

Siemens SIMATIC S7-1500 and Ruggedcom ROX Devices Improper Check for Unusual or Exceptional Conditions (CVE-2024-50602)

An issue was discovered in libexpat before 2.6.4. There is a crash within the XMLResumeParser function because XMLStopParser can stop/suspend an unstarted parser. This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information. %NASLMINLEVEL...

Siemens SIMATIC S7-1500 Integer Overflow or Wraparound (CVE-2024-45491)

An issue was discovered in libexpat before 2.6.3. dtdCopy in xmlparse.c can have an integer overflow for nDefaultAtts on 32-bit platforms where UINTMAX equals SIZEMAX. This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information...

Siemens SIMATIC S7-1500 Improper Restriction of Recursive Entity References in DTDs (CVE-2023-52426)

libexpat through 2.5.0 allows recursive XML Entity Expansion if XMLDTD is undefined at compile time. This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information. %NASLMINLEVEL 80900 C Tenable, Inc. include'compat.inc'; if description...

Siemens SIMATIC S7-1500 Improper Restriction of XML External Entity Reference (CVE-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. This plugin only works with Tenable.ot. Please visit...

Siemens SIMATIC S7-1500 Improper Restriction of Recursive Entity References in DTDs (CVE-2024-28757)

libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers created via XMLExternalEntityParserCreate. This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information. %NASLMINLEVEL 80900 C...

firefox: thunderbird: expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing

A memory amplification vulnerability in libexpat allows attackers to trigger excessive dynamic memory allocations by submitting specially crafted XML input. A small input 250 KiB can cause the parser to allocate hundreds of megabytes, leading to denial-of-service DoS through memory exhaustion...

Advisory ROSA-SA-2025-3057

Software: xmlrpc-c 1.51.0 OS: ROSA Virtualization 3.1 unaffected versions = xmlrpc-c-1.51.0-11.0.1.rv31 affected versions xmlrpc-c-1.51.0-11.0.1.rv31 CVE-ID: CVE-2024-8176 BDU-ID: CVE-Crit: HIGH CVE-DESC.: A vulnerability in the libexpat XML file parsing library is related to a stack-based buffer...

firefox: thunderbird: expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing

A memory amplification vulnerability in libexpat allows attackers to trigger excessive dynamic memory allocations by submitting specially crafted XML input. A small input 250 KiB can cause the parser to allocate hundreds of megabytes, leading to denial-of-service DoS through memory exhaustion...

Astra Linux – Vulnerabilities in Firefox, Thunderbird, and Expat

A issue was discovered in libexpat before version 2.6.4. There is a crash within the XMLResumeParser function, as XMLStopParser can stop/suspend a parser that has not been started...

OESA-2025-2564 expat security update

expat is a stream-oriented XML parser library written in C. expat excels with files too large to fit RAM, and where performance and flexibility are crucial. Security Fixes: A stack overflow vulnerability exists in the libexpat library due to the way it handles recursive entity expansion in XML...