Improper access control in Opensuse and Fedora - CVE-2016-6323
Published: October 7, 2016 / Updated: August 9, 2020
Vulnerability identifier: #VU40079
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2016-6323
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: SUSE
Fedoraproject
Fedoraproject
Affected software:
Opensuse
Fedora
Opensuse
Fedora
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The makecontext function in the GNU C Library (aka glibc or libc6) before 2.25 creates execution contexts incompatible with the unwinder on ARM EABI (32-bit) platforms, which might allow context-dependent attackers to cause a denial of service (hang), as demonstrated by applications compiled using gccgo, related to backtrace generation.
How to mitigate CVE-2016-6323
Install update from vendor's website.
Sources
- http://lists.opensuse.org/opensuse-updates/2016-10/msg00009.html
- http://www.openwall.com/lists/oss-security/2016/08/18/12
- http://www.securityfocus.com/bid/92532
- http://www-01.ibm.com/support/docview.wss?uid=swg21995039
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KTXSOVCRDGBIB4WCIDAGYYUBESXZ4IGK/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LVWSAZVBTLALXF4SCBPDV3FY6J22DXLZ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WO7IMEYWZ2WTXGGMZBWWSDCUMFN63XOB/
- https://security.gentoo.org/glsa/201706-19
- https://sourceware.org/bugzilla/show_bug.cgi?id=20435
- https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=9e2ff6c9cc54c0b4402b8d49e4abe7000fde7617