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Fencer Intel
medium 5.5

CVE-2016-3977 json

Heap-based buffer overflow in util/gif2rgb.c in gif2rgb in giflib 5.1.2 allows remote attackers to cause a denial of service (application c…

published 2016-04-21 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-4986

cvss
5.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

Heap-based buffer overflow in util/gif2rgb.c in gif2rgb in giflib 5.1.2 allows remote attackers to cause a denial of service (application crash) via the background color index in a GIF file.

Patch / fix

  • giflib Debian 14, Debian 13, Debian 12 5.1.4-3

debian advisories DEBIAN-CVE-2016-3977

  • giflib Ubuntu 18.04 LTS 5.1.4-2ubuntu0.1

ubuntu advisories UBUNTU-CVE-2016-3977

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • giflib SLE Real Time 15 SP2, SLE Module for Basesystem 15 SP3, openSUSE Leap 15.4 +8 more 5.2.1-150000.4.8.1
  • giflib SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 4.1.6-21.1
  • giflib SLES for SAP 12 SP1, SLES for SAP 12, SLES 12 SP1 +5 more 5.0.5-12.1

suse advisories SUSE-SU-2023:1970-2SUSE-SU-2022:1565-1SUSE-SU-2016:1139-1SUSE-SU-2016:1140-1

  • giflib openSUSE Tumbleweed 5.1.4-1.12

opensuse advisories openSUSE-SU-2024:10016-1

  • giflib Alpine 3.4 5.1.4-r0

alpine advisories ALPINE-CVE-2016-3977

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

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-2016-3977 updated cvss 4.3

giflib: heap buffer overflow in gif2rgb

  • Red Hat Enterprise Linux 5 giflib Red Hat Enterprise Linux 6 giflib, giflib-utils Red Hat Enterprise Linux 7 giflib, giflib-utils Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) Operational Tools phantomjs
    affected: no fix planned “Will not fix”

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

2.10% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

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.