drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in libxml2
Name: |
Mehrere Probleme in libxml2 |
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ID: |
RHSA-2021:2569-01 |
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Distribution: |
Red Hat |
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Plattformen: |
Red Hat Enterprise Linux |
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Datum: |
Mi, 30. Juni 2021, 07:20 |
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Referenzen: |
https://access.redhat.com/security/cve/CVE-2021-3516
https://access.redhat.com/security/cve/CVE-2021-3541
https://access.redhat.com/security/cve/CVE-2021-3517
https://access.redhat.com/security/cve/CVE-2021-3537
https://access.redhat.com/security/cve/CVE-2021-3518 |
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Applikationen: |
libxml2 |
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Originalnachricht |
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256
===================================================================== Red Hat Security Advisory
Synopsis: Moderate: libxml2 security update Advisory ID: RHSA-2021:2569-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:2569 Issue date: 2021-06-29 CVE Names: CVE-2021-3516 CVE-2021-3517 CVE-2021-3518 CVE-2021-3537 CVE-2021-3541 =====================================================================
1. Summary:
An update for libxml2 is now available for Red Hat Enterprise Linux 8.
Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, ppc64le, s390x, x86_64
3. Description:
The libxml2 library is a development toolbox providing the implementation of various XML standards.
Security Fix(es):
* libxml2: Use-after-free in xmlEncodeEntitiesInternal() in entities.c (CVE-2021-3516)
* libxml2: Heap-based buffer overflow in xmlEncodeEntitiesInternal() in entities.c (CVE-2021-3517)
* libxml2: Use-after-free in xmlXIncludeDoProcess() in xinclude.c (CVE-2021-3518)
* libxml2: NULL pointer dereference when post-validating mixed content parsed in recovery mode (CVE-2021-3537)
* libxml2: Exponential entity expansion attack bypasses all existing protection mechanisms (CVE-2021-3541)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
4. Solution:
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
The desktop must be restarted (log out, then log back in) for this update to take effect.
5. Bugs fixed (https://bugzilla.redhat.com/):
1950515 - CVE-2021-3541 libxml2: Exponential entity expansion attack bypasses all existing protection mechanisms 1954225 - CVE-2021-3516 libxml2: Use-after-free in xmlEncodeEntitiesInternal() in entities.c 1954232 - CVE-2021-3517 libxml2: Heap-based buffer overflow in xmlEncodeEntitiesInternal() in entities.c 1954242 - CVE-2021-3518 libxml2: Use-after-free in xmlXIncludeDoProcess() in xinclude.c 1956522 - CVE-2021-3537 libxml2: NULL pointer dereference when post-validating mixed content parsed in recovery mode
6. Package List:
Red Hat Enterprise Linux AppStream (v. 8):
aarch64: libxml2-debuginfo-2.9.7-9.el8_4.2.aarch64.rpm libxml2-debugsource-2.9.7-9.el8_4.2.aarch64.rpm libxml2-devel-2.9.7-9.el8_4.2.aarch64.rpm python3-libxml2-debuginfo-2.9.7-9.el8_4.2.aarch64.rpm
ppc64le: libxml2-debuginfo-2.9.7-9.el8_4.2.ppc64le.rpm libxml2-debugsource-2.9.7-9.el8_4.2.ppc64le.rpm libxml2-devel-2.9.7-9.el8_4.2.ppc64le.rpm python3-libxml2-debuginfo-2.9.7-9.el8_4.2.ppc64le.rpm
s390x: libxml2-debuginfo-2.9.7-9.el8_4.2.s390x.rpm libxml2-debugsource-2.9.7-9.el8_4.2.s390x.rpm libxml2-devel-2.9.7-9.el8_4.2.s390x.rpm python3-libxml2-debuginfo-2.9.7-9.el8_4.2.s390x.rpm
x86_64: libxml2-debuginfo-2.9.7-9.el8_4.2.i686.rpm libxml2-debuginfo-2.9.7-9.el8_4.2.x86_64.rpm libxml2-debugsource-2.9.7-9.el8_4.2.i686.rpm libxml2-debugsource-2.9.7-9.el8_4.2.x86_64.rpm libxml2-devel-2.9.7-9.el8_4.2.i686.rpm libxml2-devel-2.9.7-9.el8_4.2.x86_64.rpm python3-libxml2-debuginfo-2.9.7-9.el8_4.2.i686.rpm python3-libxml2-debuginfo-2.9.7-9.el8_4.2.x86_64.rpm
Red Hat Enterprise Linux BaseOS (v. 8):
Source: libxml2-2.9.7-9.el8_4.2.src.rpm
aarch64: libxml2-2.9.7-9.el8_4.2.aarch64.rpm libxml2-debuginfo-2.9.7-9.el8_4.2.aarch64.rpm libxml2-debugsource-2.9.7-9.el8_4.2.aarch64.rpm python3-libxml2-2.9.7-9.el8_4.2.aarch64.rpm python3-libxml2-debuginfo-2.9.7-9.el8_4.2.aarch64.rpm
ppc64le: libxml2-2.9.7-9.el8_4.2.ppc64le.rpm libxml2-debuginfo-2.9.7-9.el8_4.2.ppc64le.rpm libxml2-debugsource-2.9.7-9.el8_4.2.ppc64le.rpm python3-libxml2-2.9.7-9.el8_4.2.ppc64le.rpm python3-libxml2-debuginfo-2.9.7-9.el8_4.2.ppc64le.rpm
s390x: libxml2-2.9.7-9.el8_4.2.s390x.rpm libxml2-debuginfo-2.9.7-9.el8_4.2.s390x.rpm libxml2-debugsource-2.9.7-9.el8_4.2.s390x.rpm python3-libxml2-2.9.7-9.el8_4.2.s390x.rpm python3-libxml2-debuginfo-2.9.7-9.el8_4.2.s390x.rpm
x86_64: libxml2-2.9.7-9.el8_4.2.i686.rpm libxml2-2.9.7-9.el8_4.2.x86_64.rpm libxml2-debuginfo-2.9.7-9.el8_4.2.i686.rpm libxml2-debuginfo-2.9.7-9.el8_4.2.x86_64.rpm libxml2-debugsource-2.9.7-9.el8_4.2.i686.rpm libxml2-debugsource-2.9.7-9.el8_4.2.x86_64.rpm python3-libxml2-2.9.7-9.el8_4.2.x86_64.rpm python3-libxml2-debuginfo-2.9.7-9.el8_4.2.i686.rpm python3-libxml2-debuginfo-2.9.7-9.el8_4.2.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2021-3516 https://access.redhat.com/security/cve/CVE-2021-3517 https://access.redhat.com/security/cve/CVE-2021-3518 https://access.redhat.com/security/cve/CVE-2021-3537 https://access.redhat.com/security/cve/CVE-2021-3541 https://access.redhat.com/security/updates/classification/#moderate
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/
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