What is CVE-2017-7476?

CVE-2017-7476 is a critical-severity vulnerability in Gnulib, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-05-02.

How severe is CVE-2017-7476?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2017-7476 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Gnulib

CVE-2017-7476

Gnulib before 2017-04-26 has a heap-based buffer overflow with the TZ environment variable. The error is in the save_abbr function in time_rz.c.

Vulnerability class: Buffer Overflow

EPSS: 0.037 (88.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Gnulib
N/a Gnulib Before 2017-04-26 — versions Gnulib before 2017-04-26

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

mrash/afl-cve

References

secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory)
secalert@redhat.com (x_refsource_CONFIRM, Patch, VDB Entry, Third Party Advisory, Issue Tracking)
secalert@redhat.com (x_refsource_CONFIRM, Exploit, VDB Entry, Third Party Advisory, Mitigation, Issue Tracking)
secalert@redhat.com (x_refsource_CONFIRM)
secalert@redhat.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)

Frequently asked questions

What is CVE-2017-7476?: CVE-2017-7476 is a critical-severity vulnerability in Gnulib, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-05-02.
How severe is CVE-2017-7476?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2017-7476 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.