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Fencer Intel
critical 9.8

CVE-2017-7476 json

Gnulib before 2017-04-26 has a heap-based buffer overflow with the TZ environment variable.

published 9y ago modified 4mo ago also EUVD-2017-16497

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.7%
EPSS 3.7% chance of exploitation in 30 days, percentile 89%
public exploits
0
none known

Summary

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.

Patch / fix

  • coreutils openSUSE Tumbleweed 8.32-8.5
  • emacs openSUSE Tumbleweed 27.2-6.2

opensuse advisories openSUSE-SU-2024:10694-1openSUSE-SU-2024:10735-1

Is CVE-2017-7476 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-7476 updated cvss 7.8

gnulib: Out-of-bounds write by setting a large TZ variable

  • Red Hat Enterprise Linux 5 coreutils Red Hat Enterprise Linux 6 coreutils, coreutils-libs Red Hat Enterprise Linux 7 coreutils
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.65% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=1444774 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • n/a Gnulib before 2017-04-26

Classification

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

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.