CVE-2015-8777

MEDIUM

glibc < 2.22 - Pointer Guard Bypass via LD_POINTER_GUARD Environment Variable

Title source: llm

Description

The process_envvars function in elf/rtld.c in the GNU C Library (aka glibc or libc6) before 2.23 allows local users to bypass a pointer-guarding protection mechanism via a zero value of the LD_POINTER_GUARD environment variable.

References (15)

Core 15

Core References

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00037.html

Vendor Advisory vendor-advisory x_refsource_redhat

https://access.redhat.com/errata/RHSA-2017:1916

Exploit x_refsource_misc

http://hmarco.org/bugs/glibc_ptr_mangle_weakness.html

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00036.html

Vendor Advisory vendor-advisory x_refsource_ubuntu

http://www.ubuntu.com/usn/USN-2985-2

Mailing List mailing-list x_refsource_mlist

http://www.openwall.com/lists/oss-security/2016/01/20/1

Third Party Advisory vendor-advisory x_refsource_gentoo

https://security.gentoo.org/glsa/201702-11

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00038.html

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00039.html

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/81469

Patch x_refsource_confirm

https://sourceware.org/bugzilla/show_bug.cgi?id=18928

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177404.html

Third Party Advisory vendor-advisory x_refsource_debian

http://www.debian.org/security/2016/dsa-3480

Vendor Advisory vendor-advisory x_refsource_ubuntu

http://www.ubuntu.com/usn/USN-2985-1

Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack

http://www.securitytracker.com/id/1034811

Scores

CVSS v3 5.5

EPSS 0.0007

EPSS Percentile 21.0%

Attack Vector LOCAL

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Details

CWE

CWE-254

Status published

Products (1)

gnu/glibc < 2.22

Published Jan 20, 2016

Tracked Since Feb 18, 2026