ALSA-2025:21776 Important: expat security update

Expat is a C library for parsing XML documents. Security Fixes: expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing CVE-2025-59375 For more details about the security issues, including the impact, a CVSS score,...

OESA-2025-2674 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...

OESA-2025-2673 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...

OESA-2025-2672 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...

Siemens SIMATIC S7-1500 Integer Overflow or Wraparound (CVE-2022-25315)

In Expat aka libexpat before 2.4.5, there is an integer overflow in storeRawNames. 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 scriptid503971;...

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 Integer Overflow or Wraparound (CVE-2022-22825)

lookup 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 scriptid504022;...

Siemens SIMATIC S7-1500 Integer Overflow or Wraparound (CVE-2021-46143)

In doProlog in xmlparse.c in Expat aka libexpat before 2.4.3, an integer overflow exists for mgroupSize. 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 Integer Overflow or Wraparound (CVE-2022-22823)

buildmodel 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 scriptid504116;...

Siemens SIMATIC S7-1500 Integer Overflow or Wraparound (CVE-2022-23990)

Expat aka libexpat before 2.4.4 has an integer overflow in the doProlog function. 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 scriptid504304;...

Siemens SIMATIC S7-1500 Integer Overflow or Wraparound (CVE-2022-22826)

nextScaffoldPart 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 scriptid504222;...

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 Uncontrolled Resource Consumption (CVE-2022-25313)

In Expat aka libexpat before 2.4.5, an attacker can trigger stack exhaustion in buildmodel via a large nesting depth in the DTD element. This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information. %NASLMINLEVEL 80900 C Tenable, Inc...

Siemens SIMATIC S7-1500 Integer Overflow or Wraparound (CVE-2022-23852)

Expat aka libexpat before 2.4.4 has a signed integer overflow in XMLGetBuffer, for configurations with a nonzero XMLCONTEXTBYTES. This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information. %NASLMINLEVEL 80900 C Tenable, Inc...

Siemens SIMATIC S7-1500 Integer Overflow or Wraparound (CVE-2022-25314)

In Expat aka libexpat before 2.4.5, there is an integer overflow in copyString. 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 scriptid504215;...

Siemens SIMATIC S7-1500 Improper Restriction of XML External Entity Reference (CVE-2013-0340)

expat 2.1.0 and earlier does not properly handle entities expansion unless an application developer uses the XMLSetEntityDeclHandler function, which allows remote attackers to cause a denial of service resource consumption, send HTTP requests to intranet servers, or read arbitrary files via a...

Siemens SIMATIC S7-1500 Improper Encoding or Escaping of Output (CVE-2022-25235)

xmltokimpl.c in Expat aka libexpat before 2.4.5 lacks certain validation of encoding, such as checks for whether a UTF-8 character is valid in a certain context. This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information. %NASLMINLEVEL...

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

Siemens SIMATIC S7-1500 Integer Overflow or Wraparound (CVE-2022-22827)

storeAtts 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 scriptid504336;...

Siemens SIMATIC S7-1500 Exposure of Resource to Wrong Sphere (CVE-2022-25236)

xmlparse.c in Expat aka libexpat before 2.4.5 allows attackers to insert namespace-separator characters into namespace URIs. This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information. %NASLMINLEVEL 80900 C Tenable, Inc...