CVE-2017-15671 (http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15671): The glob function in glob.c in the GNU C Library (aka glibc or libc6) before 2.27, when invoked with GLOB_TILDE, could skip freeing allocated memory when processing the ~ operator with a long user name, potentially leading to a denial of service (memory leak). References: https://sourceware.org/bugzilla/show_bug.cgi?id=22325 CVE-2017-15670 (http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15670): The GNU C Library (aka glibc or libc6) before 2.27 contains an off-by-one error leading to a heap-based buffer overflow in the glob function in glob.c, related to the processing of home directories using the ~ operator followed by a long string. References: https://sourceware.org/bugzilla/show_bug.cgi?id=22320
(In reply to Aleksandr Wagner (Kivak) from comment #0) > CVE-2017-15671 > (http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15671): > > The glob function in glob.c in the GNU C Library (aka glibc or libc6) before > 2.27, when invoked with GLOB_TILDE, could skip freeing allocated memory when > processing the ~ operator with a long user name, potentially leading to a > denial of service (memory leak). > > References: > > https://sourceware.org/bugzilla/show_bug.cgi?id=22325 This is too invasive for a backport to 2.25 (by me). However, it already is in the gentoo/2.26 branch. > > CVE-2017-15670 > (http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15670): > > The GNU C Library (aka glibc or libc6) before 2.27 contains an off-by-one > error leading to a heap-based buffer overflow in the glob function in > glob.c, related to the processing of home directories using the ~ operator > followed by a long string. > > References: > > https://sourceware.org/bugzilla/show_bug.cgi?id=22320 Fix added to gentoo/2.25 branch, already backported upstream in gentoo/2.26 branch
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=d93339d7f5bfe90901a8c6921d1c221b54c8302a commit d93339d7f5bfe90901a8c6921d1c221b54c8302a Author: Andreas K. Hüttel <dilfridge@gentoo.org> AuthorDate: 2017-10-27 23:30:07 +0000 Commit: Andreas K. Hüttel <dilfridge@gentoo.org> CommitDate: 2017-10-27 23:30:19 +0000 sys-libs/glibc: Revision bump to 2.25 patchlevel 12, unkeyworded so far Resolves CVE-2017-15670, CVE-2017-15804, CVE-2016-6261 Bug: https://bugs.gentoo.org/634920 Bug: https://bugs.gentoo.org/635010 Bug: https://bugs.gentoo.org/635118 Package-Manager: Portage-2.3.13, Repoman-2.3.4 sys-libs/glibc/Manifest | 1 + sys-libs/glibc/glibc-2.25-r9.ebuild | 154 ++++++++++++++++++++++++++++++++++++ 2 files changed, 155 insertions(+)}
All vulnerable versions are masked. No further cleanup (toolchain package). Nothing to do for toolchain here anymore.
This issue was resolved and addressed in GLSA 201804-02 at https://security.gentoo.org/glsa/201804-02 by GLSA coordinator Aaron Bauman (b-man).
