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CVE-2020-24977

libxml2: Buffer overflow vulnerability in xmlEncodeEntitiesInternal() in entities.c

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.

CVSS 3.1 · 6.5 Medium EPSS 3.0% KEV · Not listed
Vendors
Debian Fedoraproject Netapp and 4 more
Products
Debian Linux Fedora Active Iq Unified Manager and 17 more
CVE-2018-14567

libxml2: Infinite loop caused by incorrect error detection during LZMA decompression

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 LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint, a different vulnerability than CVE-2015-8035 and CVE-2018-9251.

CVSS 3.0 · 6.5 Medium EPSS 4.3% KEV · Not listed
Vendors
Canonical Debian Redhat and 1 more
Products
Ubuntu Linux Debian Linux Ansible Tower and 2 more
CVE-2018-14404

libxml2: NULL pointer dereference in xmlXPathCompOpEval() function in xpath.c

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 XPATH_OP_AND or XPATH_OP_OR case. Applications processing untrusted XSL format inputs with the use of the libxml2 library may be vulnerable to a denial of service attack due to a crash of the application.

CVSS 3.1 · 6.5 Medium EPSS 3.7% KEV · Not listed
Vendors
Canonical Debian Redhat and 1 more
Products
Ubuntu Linux Debian Linux Ansible Tower and 3 more
CVE-2017-9050

libxml2: Heap-based buffer over-read in function xmlDictAddString

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.

CVSS 3.1 · 7.5 High EPSS 4.6% KEV · Not listed
Vendors
Redhat Xmlsoft
Products
Jboss Core Services Libxml2
CVE-2017-9049

libxml2: Heap-based buffer over-read in function xmlDictComputeFastKey

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.

CVSS 3.1 · 7.5 High EPSS 4.6% KEV · Not listed
Vendors
Redhat Xmlsoft
Products
Jboss Core Services Libxml2
CVE-2017-9048

libxml2: Stack-based buffer overflow in function xmlSnprintfElementContent

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 characters without checking whether the current strlen(buf) + 2 < size. This vulnerability causes programs that use libxml2, such as PHP, to crash.

CVSS 3.1 · 7.5 High EPSS 4.8% KEV · Not listed
Vendors
Redhat Xmlsoft
Products
Jboss Core Services Libxml2
CVE-2017-9047

libxml2: Buffer overflow in function xmlSnprintfElementContent

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 strlen(buf). If the content->type is XML_ELEMENT_CONTENT_ELEMENT, then (i) the content->prefix is appended to buf (if it actually fits) whereupon (ii) content->name is written to the buffer. However, the check for whether the content->name actually fits also uses 'len' rather than the updated buffer length strlen(buf). This allows us to write about "size" many bytes beyond the allocated memory. This vulnerability causes programs that use libxml2, such as PHP, to crash.

CVSS 3.0 · 7.5 High EPSS 3.2% KEV · Not listed
Vendors
Redhat Xmlsoft
Products
Jboss Core Services Libxml2
CVE-2017-7376

libxml2: Incorrect limit used for port values

Buffer overflow in libxml2 allows remote attackers to execute arbitrary code by leveraging an incorrect limit for port values when handling redirects.

CVSS 3.0 · 9.8 Critical EPSS 23.2% KEV · Not listed
Vendors
Debian Google Xmlsoft
Products
Debian Linux Android Libxml2
CVE-2017-7375

libxml2: Missing validation for external entities in xmlParsePEReference

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 usually reachable with default parser flags, and expose content from local files, HTTP, or FTP servers (which might be otherwise unreachable).

CVSS 3.1 · 9.8 Critical EPSS 3.0% KEV · Not listed
Vendors
Debian Google Xmlsoft
Products
Debian Linux Android Libxml2
CVE-2017-18258

libxml2: Unrestricted memory usage in xz_head() function in xzlib.c

The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict memory usage to what is required for a legitimate file.

CVSS 3.0 · 6.5 Medium EPSS 2.7% KEV · Not listed
Vendors
Redhat Xmlsoft
Products
Ansible Tower Enterprise Linux Jboss Core Services and 1 more
CVE-2017-16932

libxml2: Infinite recursion in parameter entities

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

CVSS 3.1 · 7.5 High EPSS 6.5% KEV · Not listed
Vendors
Xmlsoft
Products
Libxml2
CVE-2017-16931

libxml2: Mishandling parameter-entity references

parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a '%' character in a DTD name.

CVSS 3.0 · 9.8 Critical EPSS 4.6% KEV · Not listed
Vendors
Xmlsoft
Products
Libxml2
CVE-2016-9318

libxml2: XML External Entity vulnerability

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 crafted document.

CVSS 3.1 · 5.5 Medium EPSS 2.9% KEV · Not listed
Vendors
Canonical Redhat Xmlsec Project and 1 more
Products
Ubuntu Linux Jboss Core Services Xmlsec and 1 more
CVE-2016-5131

libxml2: Use after free triggered by XPointer paths beginning with range-to

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.

CVSS 3.1 · 8.8 High EPSS 2.3% KEV · Not listed
Vendors
Apple Canonical Debian and 5 more
Products
Iphone Os Mac Os X Tvos and 15 more
CVE-2016-4658

libxml2: Use after free via namespace node in XPointer ranges

xpointer.c in libxml2 before 2.9.5 (as used in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3, and other products) does not forbid namespace nodes in XPointer ranges, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and memory corruption) via a crafted XML document.

CVSS 3.0 · 9.8 Critical EPSS 8.6% KEV · Not listed
Vendors
Apple Redhat Xmlsoft
Products
Iphone Os Mac Os X Tvos and 3 more
CVE-2026-86142

libxml2: libxml2: Heap-based buffer overflow in xmlXPtrEval due to xpointer length saturation

In libxml2 before 2.15.4, there is a heap-based buffer overflow in xmlXPtrEvalXPtrPart because of xmlXPtrEval xpointer length saturation.

CVSS 3.1 · 6.9 Medium EPSS < 1% KEV · Not listed
Vendors
Xmlsoft
Products
Libxml2