An update for libxml2 is now available for openEuler-20.03-LTS-SP1 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2021-1202 Final 1.0 1.0 2021-06-07 Initial 2021-06-07 2021-06-07 openEuler SA Tool V1.0 2021-06-07 libxml2 security update An update for libxml2 is now available for openEuler-20.03-LTS-SP1. This library allows to manipulate XML files. It includes support to read, modify and write XML and HTML files. There is DTDs support this includes parsing and validation even with complex DtDs, either at parse time or later once the document has been modified. The output can be a simple SAX stream or and in-memory DOM like representations. In this case one can use the built-in XPath and XPointer implementation to select sub nodes or ranges. A flexible Input/Output mechanism is available, with existing HTTP and FTP modules and combined to an URI library. Security Fix(es): 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.(CVE-2021-3537) 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.(CVE-2021-3518) 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.(CVE-2021-3517) An update for libxml2 is now available for openEuler-20.03-LTS-SP1. openEuler Security has rated this update as having a security impact of high. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. High libxml2 https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1202 https://openeuler.org/en/security/cve/detail.html?id=CVE-2021-3537 https://openeuler.org/en/security/cve/detail.html?id=CVE-2021-3518 https://openeuler.org/en/security/cve/detail.html?id=CVE-2021-3517 https://nvd.nist.gov/vuln/detail/CVE-2021-3537 https://nvd.nist.gov/vuln/detail/CVE-2021-3518 https://nvd.nist.gov/vuln/detail/CVE-2021-3517 openEuler-20.03-LTS-SP1 libxml2-debugsource-2.9.10-16.oe1.aarch64.rpm libxml2-debuginfo-2.9.10-16.oe1.aarch64.rpm libxml2-devel-2.9.10-16.oe1.aarch64.rpm python2-libxml2-2.9.10-16.oe1.aarch64.rpm python3-libxml2-2.9.10-16.oe1.aarch64.rpm libxml2-2.9.10-16.oe1.aarch64.rpm libxml2-help-2.9.10-16.oe1.noarch.rpm libxml2-2.9.10-16.oe1.src.rpm libxml2-2.9.10-16.oe1.x86_64.rpm python3-libxml2-2.9.10-16.oe1.x86_64.rpm libxml2-debugsource-2.9.10-16.oe1.x86_64.rpm python2-libxml2-2.9.10-16.oe1.x86_64.rpm libxml2-debuginfo-2.9.10-16.oe1.x86_64.rpm libxml2-devel-2.9.10-16.oe1.x86_64.rpm 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. 2021-06-07 CVE-2021-3537 openEuler-20.03-LTS-SP1 Medium 5.9 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H libxml2 security update 2021-06-07 https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1202 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. 2021-06-07 CVE-2021-3518 openEuler-20.03-LTS-SP1 High 8.8 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H libxml2 security update 2021-06-07 https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1202 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. 2021-06-07 CVE-2021-3517 openEuler-20.03-LTS-SP1 High 8.6 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H libxml2 security update 2021-06-07 https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1202