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SUSE-SU-2017:1557-1

Опубликовано: 13 июн. 2017
Источник: suse-cvrf

Описание

Security update for libxml2

This update for libxml2 fixes the following issues:

Security issues fixed:

  • CVE-2017-9050: heap-based buffer overflow (xmlDictAddString func) [bsc#1039069, bsc#1039661]
  • CVE-2017-9049: heap-based buffer overflow (xmlDictComputeFastKey func) [bsc#1039066]
  • CVE-2017-9048: stack overflow vulnerability (xmlSnprintfElementContent func) [bsc#1039063]
  • CVE-2017-9047: stack overflow vulnerability (xmlSnprintfElementContent func) [bsc#1039064]

A clarification for the previously released update: For CVE-2016-9318 we decided not to ship a fix since it can break existing setups. Please take appropriate actions if you parse untrusted XML files and use the new -noxxe flag if possible (bnc#1010675, bnc#1013930).

Список пакетов

SUSE Linux Enterprise Point of Sale 11 SP3
libxml2-2.7.6-0.69.1
libxml2-doc-2.7.6-0.69.1
libxml2-python-2.7.6-0.69.3
SUSE Linux Enterprise Server 11 SP3-LTSS
libxml2-2.7.6-0.69.1
libxml2-32bit-2.7.6-0.69.1
libxml2-doc-2.7.6-0.69.1
libxml2-python-2.7.6-0.69.3
SUSE Linux Enterprise Server 11 SP3-TERADATA
libxml2-2.7.6-0.69.1
libxml2-32bit-2.7.6-0.69.1
libxml2-doc-2.7.6-0.69.1
libxml2-python-2.7.6-0.69.3
SUSE Linux Enterprise Server 11 SP4
libxml2-2.7.6-0.69.1
libxml2-32bit-2.7.6-0.69.1
libxml2-doc-2.7.6-0.69.1
libxml2-python-2.7.6-0.69.3
libxml2-x86-2.7.6-0.69.1
SUSE Linux Enterprise Server for SAP Applications 11 SP4
libxml2-2.7.6-0.69.1
libxml2-32bit-2.7.6-0.69.1
libxml2-doc-2.7.6-0.69.1
libxml2-python-2.7.6-0.69.3
libxml2-x86-2.7.6-0.69.1
SUSE Linux Enterprise Software Development Kit 11 SP4
libxml2-devel-2.7.6-0.69.1
libxml2-devel-32bit-2.7.6-0.69.1

Ссылки

Описание

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.

Затронутые продукты
SUSE Linux Enterprise Point of Sale 11 SP3:libxml2-2.7.6-0.69.1
SUSE Linux Enterprise Point of Sale 11 SP3:libxml2-doc-2.7.6-0.69.1
SUSE Linux Enterprise Point of Sale 11 SP3:libxml2-python-2.7.6-0.69.3
SUSE Linux Enterprise Server 11 SP3-LTSS:libxml2-2.7.6-0.69.1
Ссылки

Описание

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.

Затронутые продукты
SUSE Linux Enterprise Point of Sale 11 SP3:libxml2-2.7.6-0.69.1
SUSE Linux Enterprise Point of Sale 11 SP3:libxml2-doc-2.7.6-0.69.1
SUSE Linux Enterprise Point of Sale 11 SP3:libxml2-python-2.7.6-0.69.3
SUSE Linux Enterprise Server 11 SP3-LTSS:libxml2-2.7.6-0.69.1
Ссылки

Описание

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.

Затронутые продукты
SUSE Linux Enterprise Point of Sale 11 SP3:libxml2-2.7.6-0.69.1
SUSE Linux Enterprise Point of Sale 11 SP3:libxml2-doc-2.7.6-0.69.1
SUSE Linux Enterprise Point of Sale 11 SP3:libxml2-python-2.7.6-0.69.3
SUSE Linux Enterprise Server 11 SP3-LTSS:libxml2-2.7.6-0.69.1
Ссылки

Описание

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.

Затронутые продукты
SUSE Linux Enterprise Point of Sale 11 SP3:libxml2-2.7.6-0.69.1
SUSE Linux Enterprise Point of Sale 11 SP3:libxml2-doc-2.7.6-0.69.1
SUSE Linux Enterprise Point of Sale 11 SP3:libxml2-python-2.7.6-0.69.3
SUSE Linux Enterprise Server 11 SP3-LTSS:libxml2-2.7.6-0.69.1
Ссылки

Описание

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.

Затронутые продукты
SUSE Linux Enterprise Point of Sale 11 SP3:libxml2-2.7.6-0.69.1
SUSE Linux Enterprise Point of Sale 11 SP3:libxml2-doc-2.7.6-0.69.1
SUSE Linux Enterprise Point of Sale 11 SP3:libxml2-python-2.7.6-0.69.3
SUSE Linux Enterprise Server 11 SP3-LTSS:libxml2-2.7.6-0.69.1
Ссылки