Vulnerability in GNU Glibc
CVE-2015-8777
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.006 (45.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
Weakness classification (CWE)
References
- lists.opensuse.org/opensuse-security-announce/2016-02/msg00037.html (vendor-advisory)
- access.redhat.com/errata/RHSA-2017:1916 (vendor-advisory)
- hmarco.org/bugs/glibc_ptr_mangle_weakness.html (Exploit)
- lists.opensuse.org/opensuse-security-announce/2016-02/msg00036.html (vendor-advisory)
- www.ubuntu.com/usn/USN-2985-2 (vendor-advisory)
- www.openwall.com/lists/oss-security/2016/01/20/1 (mailing-list)
- security.gentoo.org/glsa/201702-11 (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2016-02/msg00038.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2016-02/msg00039.html (vendor-advisory)
- www.securityfocus.com/bid/81469 (vdb-entry)
Frequently asked questions
- What is CVE-2015-8777?
- CVE-2015-8777 is a medium-severity vulnerability in GNU Glibc, classified under CWE-254. CVSS score: 5.5/10. Published 2016-01-20.
- How severe is CVE-2015-8777?
- Medium severity. CVSS v3 base score is 5.5 out of 10.