SUSE-SU-2025:4104-1 Security update for libxml2

This update for libxml2 fixes the following issues: - CVE-2025-9714: Fixed infinite recursion at exsltDynMapFunction function in libexslt/dynamic.c bsc1249076 - CVE-2025-8732: Fixed infinite recursion in catalog parsing functions when processing malformed SGML catalog files bsc1247850...

Unity Linux 20.1070e Security Update: libxslt (UTSA-2025-990908)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-990908 advisory. Uncontrolled recursion inXPath evaluationin libxml2 up to and including version 2.9.14 allows a local attacker to cause a stack overflow via crafted expressions. XPa...

Siemens SIMATIC S7-1500 Buffer Over-read (CVE-2024-34459)

An issue was discovered in xmllint from libxml2 before 2.11.8 and 2.12.x before 2.12.7. Formatting error messages with xmllint --htmlout can result in a buffer over-read in xmlHTMLPrintFileContext in xmllint.c. This plugin only works with Tenable.ot. Please visit...

Siemens SIMATIC S7-1500 Out-of-bounds Write (CVE-2017-0663)

A remote code execution vulnerability in libxml2 could enable an attacker using a specially crafted file to execute arbitrary code within the context of an unprivileged process. This issue is rated as High due to the possibility of remote code execution in an application that uses this library...

Siemens SIMATIC S7-1500 Out-of-bounds Read (CVE-2020-24977)

GNOME project libxml2 v2.9.10 has a global buffer over-read vulnerability in xmlEncodeEntitiesInternal at libxml2/entities.c. The issue has been fixed in commit 50f06b3e. This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information...

Siemens SIMATIC S7-1500 Missing Release of Memory after Effective Lifetime (CVE-2019-20388)

xmlSchemaPreRun in xmlschemas.c in libxml2 2.9.10 allows an xmlSchemaValidateStream memory leak. 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 Use After Free (CVE-2023-45322)

libxml2 through 2.11.5 has a use-after-free that can only occur after a certain memory allocation fails. This occurs in xmlUnlinkNode in tree.c. NOTE: the vendor's position is I don't think these issues are critical enough to warrant a CVE ID ... because an attacker typically can't control when...

Siemens SIMATIC S7-1500 Integer Overflow or Wraparound (CVE-2022-29824)

In libxml2 before 2.9.14, several buffer handling functions in buf.c xmlBuf and tree.c xmlBuffer don't check for integer overflows. This can result in out-of-bounds memory writes. Exploitation requires a victim to open a crafted, multi-gigabyte XML file. Other software using libxml2's buffer...

Siemens SIMATIC S7-1500 Out-of-bounds Read (CVE-2017-9049)

libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictComputeFastKey function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for libxml2 Bug 759398. This plugi...

Siemens SIMATIC S7-1500 Use After Free (CVE-2021-3518)

There's a flaw in libxml2 in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by an application linked with libxml2 could trigger a use-after-free. The greatest impact from this flaw is to confidentiality, integrity, and availability. This plugin only works...

Siemens SIMATIC S7-1500 Improper Restriction of Operations within the Bounds of a Memory Buffer (CVE-2017-9047)

A buffer overflow was discovered in libxml2 20904-GITv2.9.4-16-g0741801. The function xmlSnprintfElementContent in valid.c is supposed to recursively dump the element content definition into a char buffer 'buf' of size 'size'. The variable len is assigned strlenbuf. If the content-type is...

Siemens SIMATIC S7-1500 Improper Restriction of XML External Entity Reference (CVE-2016-9318)

libxml2 2.9.4 and earlier, as used in XMLSec 1.2.23 and earlier and other products, does not offer a flag directly indicating that the current document may be read but other files may not be opened, which makes it easier for remote attackers to conduct XML External Entity XXE attacks via a crafte...

Siemens SIMATIC S7-1500 Use After Free (CVE-2016-5131)

Use-after-free vulnerability in libxml2 through 2.9.4, as used in Google Chrome before 52.0.2743.82, allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to the XPointer range-to function. This plugin only works with Tenable.ot. Please...

Siemens SIMATIC S7-1500 Loop with Unreachable Exit Condition (CVE-2018-14567)

libxml2 2.9.8, if --with-lzma is used, allows remote attackers to cause a denial of service infinite loop via a crafted XML file that triggers LZMAMEMLIMITERROR, as demonstrated by xmllint, a different vulnerability than CVE-2015-8035 and CVE-2018-9251. This plugin only works with Tenable.ot...

Siemens SIMATIC S7-1500 Loop with Unreachable Exit Condition (CVE-2017-16932)

parser.c in libxml2 before 2.9.5 does not prevent infinite recursion in parameter entities. 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 scriptid504324...

Siemens SIMATIC S7-1500 Out-of-bounds Write (CVE-2021-3517)

There is a flaw in the xml entity encoding functionality of libxml2 in versions before 2.9.11. An attacker who is able to supply a crafted file to be processed by an application linked with the affected functionality of libxml2 could trigger an out-of-bounds read. The most likely impact of this...

Siemens SIMATIC S7-1500 Improper Restriction of XML External Entity Reference (CVE-2017-7375)

A flaw in libxml2 allows remote XML entity inclusion with default parser flags i.e., when the caller did not request entity substitution, DTD validation, external DTD subset loading, or default DTD attributes. Depending on the context, this may expose a higher- risk attack surface in libxml2 not...

Siemens SIMATIC S7-1500 Improper Restriction of Operations within the Bounds of a Memory Buffer (CVE-2017-9048)

libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a stack-based buffer overflow. The function xmlSnprintfElementContent in valid.c is supposed to recursively dump the element content definition into a char buffer 'buf' of size 'size'. At the end of the routine, the function may strcat two more...

Siemens SIMATIC S7-1500 Out-of-bounds Read (CVE-2017-9050)

libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictAddString function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for CVE-2016-1839. This plugin only wor...

Siemens SIMATIC S7-1500 NULL Pointer Dereference (CVE-2018-14404)

A NULL pointer dereference vulnerability exists in the xpath.c:xmlXPathCompOpEval function of libxml2 through 2.9.8 when parsing an invalid XPath expression in the XPATHOPAND or XPATHOPOR case. Applications processing untrusted XSL format inputs with the use of the libxml2 library may be vulnerab...