The get_contents function in nss_files/files-XXX.c in the Name Service Switch (NSS) in GNU C Library (aka glibc or libc6) before 2.20 might allow local users to cause a denial of service (heap corruption) or gain privileges via a long line in the NSS files database.

References

• https://nvd.nist.gov/vuln/detail/CVE-2015-5277
• https://bugzilla.redhat.com/show_bug.cgi?id=1262914
• https://seclists.org/bugtraq/2019/Sep/7
• https://security.gentoo.org/glsa/201702-11
• https://sourceware.org/bugzilla/show_bug.cgi?id=17079
• https://sourceware.org/ml/libc-alpha/2014-09/msg00088.html
• http://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html
• http://rhn.redhat.com/errata/RHSA-2015-2172.html
• http://seclists.org/fulldisclosure/2019/Sep/7
• http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
• http://www.securityfocus.com/bid/78092
• http://www.securitytracker.com/id/1034196
• http://www.ubuntu.com/usn/USN-2985-1
• http://www.ubuntu.com/usn/USN-2985-2
• https://access.redhat.com/errata/RHSA-2015:2172
• https://access.redhat.com/errata/RHSA-2015:2589
• https://access.redhat.com/security/cve/CVE-2015-5277