Vulnérabilités de libxml2 · Page n° 2

CVE-2025-27113

libxml2 before 2.12.10 and 2.13.x before 2.13.6 has a NULL pointer dereference in xmlPatMatch in pattern.c.

• Mettez à jour vers 2.9.3+dfsg1-1ubuntu0.7+esm7

CVE-2025-24928

libxml2 before 2.12.10 and 2.13.x before 2.13.6 has a stack-based buffer overflow in xmlSnprintfElements in valid.c. To exploit this, DTD validation must occur for an untrusted document or untrusted DTD. NOTE: this is similar to CVE-2017-9047.

• Mettez à jour vers 2.9.3+dfsg1-1ubuntu0.7+esm7

CVE-2024-56171

libxml2 before 2.12.10 and 2.13.x before 2.13.6 has a use-after-free in xmlSchemaIDCFillNodeTables and xmlSchemaBubbleIDCNodeTables in xmlschemas.c. To exploit this, a crafted XML document must be validated against an XML schema with certain identity constraints, or a crafted XML schema must be used.

• Mettez à jour vers 2.9.3+dfsg1-1ubuntu0.7+esm7

CVE-2022-49043

xmlXIncludeAddNode in xinclude.c in libxml2 before 2.11.0 has a use-after-free.

• Mettez à jour vers 2.9.3+dfsg1-1ubuntu0.7+esm7

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.

• Mettez à jour vers 2.9.3+dfsg1-1ubuntu0.7+esm7

CVE-2024-25062

An issue was discovered in libxml2 before 2.11.7 and 2.12.x before 2.12.5. When using the XML Reader interface with DTD validation and XInclude expansion enabled, processing crafted XML documents can lead to an xmlValidatePopElement use-after-free.

• Mettez à jour vers 2.9.3+dfsg1-1ubuntu0.7+esm6

CVE-2023-29469

An issue was discovered in libxml2 before 2.10.4. When hashing empty dict strings in a crafted XML document, xmlDictComputeFastKey in dict.c can produce non-deterministic values, leading to various logic and memory errors, such as a double free. This behavior occurs because there is an attempt to use the first byte of an empty string, and any value is possible (not solely the '\0' value).

• Mettez à jour vers 2.9.3+dfsg1-1ubuntu0.7+esm5

CVE-2023-28484

In libxml2 before 2.10.4, parsing of certain invalid XSD schemas can lead to a NULL pointer dereference and subsequently a segfault. This occurs in xmlSchemaFixupComplexType in xmlschemas.c.

• Mettez à jour vers 2.9.3+dfsg1-1ubuntu0.7+esm5

CVE-2022-40304

An issue was discovered in libxml2 before 2.10.3. Certain invalid XML entity definitions can corrupt a hash table key, potentially leading to subsequent logic errors. In one case, a double-free can be provoked.

• Mettez à jour vers 2.9.3+dfsg1-1ubuntu0.7+esm4

CVE-2022-40303

An issue was discovered in libxml2 before 2.10.3. When parsing a multi-gigabyte XML document with the XML_PARSE_HUGE parser option enabled, several integer counters can overflow. This results in an attempt to access an array at a negative 2GB offset, typically leading to a segmentation fault.

• Mettez à jour vers 2.9.3+dfsg1-1ubuntu0.7+esm4

CVE-2016-3709

Possible cross-site scripting vulnerability in libxml after commit 960f0e2.

• Mettez à jour vers 2.9.3+dfsg1-1ubuntu0.7+esm3

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 functions, for example libxslt through 1.1.35, is affected as well.

• Mettez à jour vers 2.9.3+dfsg1-1ubuntu0.7+esm2

CVE-2022-23308

valid.c in libxml2 before 2.9.13 has a use-after-free of ID and IDREF attributes.

• Mettez à jour vers 2.9.3+dfsg1-1ubuntu0.7+esm2

CVE-2021-3516

There's a flaw in libxml2's xmllint in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by xmllint could trigger a use-after-free. The greatest impact of this flaw is to confidentiality, integrity, and availability.

• Mettez à jour vers 2.9.3+dfsg1-1ubuntu0.7+esm1

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 flaw is to application availability, with some potential impact to confidentiality and integrity if an attacker is able to use memory information to further exploit the application.

• Mettez à jour vers 2.9.3+dfsg1-1ubuntu0.7+esm1

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.

• Mettez à jour vers 2.9.3+dfsg1-1ubuntu0.7+esm1

CVE-2021-3537

A vulnerability found in libxml2 in versions before 2.9.11 shows that it did not propagate errors while parsing XML mixed content, causing a NULL dereference. If an untrusted XML document was parsed in recovery mode and post-validated, the flaw could be used to crash the application. The highest threat from this vulnerability is to system availability.

• Mettez à jour vers 2.9.3+dfsg1-1ubuntu0.7+esm1

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.

• Mettez à jour vers 2.9.3+dfsg1-1ubuntu0.7+esm1

CVE-2019-20388

xmlSchemaPreRun in xmlschemas.c in libxml2 2.9.10 allows an xmlSchemaValidateStream memory leak.

• Mettez à jour vers 2.9.3+dfsg1-1ubuntu0.7+esm1

CVE-2017-5130

An integer overflow in xmlmemory.c in libxml2 before 2.9.5, as used in Google Chrome prior to 62.0.3202.62 and other products, allowed a remote attacker to potentially exploit heap corruption via a crafted XML file.