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  2. CVE-2015-8777
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CVE-2015-8777

medium
  • Information
  • CPEs
  • Plugins

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Details

Source: MITRE

Published: 2016-01-20

Updated: 2018-01-05

Type: CWE-254

Risk Information

CVSS v2

Base Score: 2.1

Vector: AV:L/AC:L/Au:N/C:N/I:P/A:N

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 5.5

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

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM

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