CVE-2017-16932

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

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

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

Use-after-free error could lead to crash (CVE-2016-4658).

Use-after-free vulnerability in libxml2 through 2.9.4 allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to the XPointer range-to function (CVE-2016-5131).

libxml2 2.9.4 and earlier 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 (CVE-2016-9318).

Heap buffer overflow in xmlAddID (CVE-2017-0663).

Integer overflow in memory debug code in libxml2 before 2.9.5 (CVE-2017-5130).

NULL pointer deref in xmlDumpElementContent (CVE-2017-5969).

Prevent unwanted external entity reference (CVE-2017-7375).

Increase buffer space for port in HTTP redirect support (CVE-2017-7376).

The function xmlSnprintfElementContent in valid.c was vulnerable to a stack buffer overflow (CVE-2017-9047, CVE-2017-9048).

The function xmlDictComputeFastKey in dict.c was vulnerable to a heap-based buffer over-read (CVE-2017-9049).

The function xmlDictAddString was vulnerable to a heap-based buffer over-read (CVE-2017-9050).

It was discovered that libxml2 incorrecty handled certain files. An attacker could use this issue with specially constructed XML data to cause libxml2 to consume resources, leading to a denial of service (CVE-2017-15412).

Wei Lei discovered that libxml2 incorrecty handled certain parameter entities. An attacker could use this issue with specially constructed XML data to cause libxml2 to consume resources, leading to a denial of service (CVE-2017-16932).

The libxml2 package has been updated to version 2.9.7 to fix these issues and several other bugs.

Integer overflow in memory debug code in libxml2 before 2.9.5 (CVE-2017-5130).

It was discovered that libxml2 incorrecty handled certain files. An attacker could use this issue with specially constructed XML data to cause libxml2 to consume resources, leading to a denial of service (CVE-2017-15412).

Wei Lei discovered that libxml2 incorrecty handled certain parameter entities. An attacker could use this issue with specially constructed XML data to cause libxml2 to consume resources, leading to a denial of service (CVE-2017-16932).

The libxml2 package has been updated to version 2.9.7 to fix these issues and several other bugs.

Also, the perl-XML-LibXML package has been updated to version 2.13.200 to allow it to be rebuilt against the updated libxml2.

This update for libxml2 fixes several issues.

Theses security issues were fixed:

• CVE-2017-16932: Fixed infinite recursion could lead to an infinite loop or memory exhaustion when expanding a parameter entity in a DTD (bsc#1069689).
• CVE-2017-15412: Prevent use after free when calling XPath extension functions that allowed remote attackers to cause DoS or potentially RCE (bsc#1077993)
• CVE-2016-5131: Use-after-free vulnerability in libxml2 allowed remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to the XPointer range-to function. (bsc#1078813)
• CVE-2017-5130: Fixed a potential remote buffer overflow in function xmlMemoryStrdup() (bsc#1078806)

This update for libxml2 fixes the following issues:

• CVE-2022-29824: Fixed integer overflow leading to out-of-bounds write in buf.c and tree.c (bsc#1199132).
• CVE-2017-16932: Prevent infinite recursion in parameter entities (bsc#1069689).

Wei Lei discovered that libxml2 incorrecty handled certain parameter entities. An attacker could use this issue with specially constructed XML data to cause libxml2 to consume resources, leading to a denial of service.

Matias Brutti discovered that libxml2 incorrectly handled certain XML files. An attacker could possibly use this issue to expose sensitive information. (CVE-2016-9318)

It was discovered that libxml2 incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS. (CVE-2017-16932)

It was discovered that libxml2 incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service. (CVE-2017-18258, CVE-2018-14404, CVE-2018-14567)