drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in GNU C library
Name: |
Mehrere Probleme in GNU C library |
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ID: |
FEDORA-2018-8e27ad96ed |
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Distribution: |
Fedora |
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Plattformen: |
Fedora 26 |
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Datum: |
Di, 23. Januar 2018, 23:12 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16997
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15671
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000001
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15670
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15804 |
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Applikationen: |
GNU C library |
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Originalnachricht |
------------------------------------------------------------------------------- - Fedora Update Notification FEDORA-2018-8e27ad96ed 2018-01-23 21:16:49.691231 ------------------------------------------------------------------------------- -
Name : glibc Product : Fedora 26 Version : 2.25 Release : 13.fc26 URL : http://www.gnu.org/software/glibc/ Summary : The GNU libc libraries Description : The glibc package contains standard libraries which are used by multiple programs on the system. In order to save disk space and memory, as well as to make upgrading easier, common system code is kept in one place and shared between programs. This particular package contains the most important sets of shared libraries: the standard C library and the standard math library. Without these two libraries, a Linux system will not function.
------------------------------------------------------------------------------- - Update Information:
This update addresses two security vulnerabilities: * CVE-2017-15670, CVE-2017-15671, CVE-2017-15804: Various vulnerabilities could lead to memory corruption in the `glob` and `glob64` function. (RHBZ#1505298, RHBZ##1504807) * CVE-2017-16997: Check for empty tokens before dynamic string token expansion in the dynamic linker, so that pre-existing privileged programs with `$ORIGIN` rpaths/runpaths do not cause the dynamic linker to search the current directory, potentially leading to privilege escalation. (RHBZ#1526866). * CVE-2018-1000001: `getcwd` would sometimes return a non-absolute path, confusing the `realpath` function, leading to privilege escalation in conjunction with user namespaces. (RHBZ#1533837) In addition, this update replaces the dynamic linker trampoline on x86-64 with a version which uses the `XSAVE` instruction if it is available. This improves compatibility with future hardware and compilers which do not follow the x86-64 ABI. This update also adjusts the thread stack size accounting to provide additional stack space compared to previous glibc versions (to avoid introducing RHBZ#1527887). ------------------------------------------------------------------------------- - References:
[ 1 ] Bug #1533837 - CVE-2018-1000001 glibc: realpath() buffer underflow when getcwd() returns relative path allows privilege escalation [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=1533837 [ 2 ] Bug #1526866 - CVE-2017-16997 glibc: Incorrect handling of RPATH in elf/dl-load.c can be used to execute code loaded from arbitrary libraries [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=1526866 [ 3 ] Bug #1504807 - CVE-2017-15670 CVE-2017-15671 glibc: various flaws [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=1504807 ------------------------------------------------------------------------------- -
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade glibc' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label
All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/keys ------------------------------------------------------------------------------- - _______________________________________________ package-announce mailing list -- package-announce@lists.fedoraproject.org To unsubscribe send an email to package-announce-leave@lists.fedoraproject.org
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