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Fencer Intel
medium 5.5

CVE-2017-5979 json

The prescan_entry function in fseeko.c in zziplib 0.13.62 allows remote attackers to cause a denial of service (NULL pointer dereference an…

published 2017-03-01 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-15048

cvss
5.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 76%
public exploits
0
none known

Summary

The prescan_entry function in fseeko.c in zziplib 0.13.62 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a crafted ZIP file.

Patch / fix

  • zziplib Debian 14, Debian 13, Debian 12 0.13.62-3.1

debian advisories DEBIAN-CVE-2017-5979

  • zziplib Ubuntu 14.04 LTS 0.13.62-2ubuntu0.1
  • zziplib Ubuntu 16.04 LTS 0.13.62-3ubuntu0.16.04.1

ubuntu advisories UBUNTU-CVE-2017-5979

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

  • zziplib SLED 12 SP2, SLED 12 SP1, SLE Workstation Extension 12 SP2 +3 more 0.13.62-9.1

suse advisories SUSE-SU-2017:1095-1

  • zziplib openSUSE Tumbleweed 0.13.72-1.4

opensuse advisories openSUSE-SU-2024:11546-1

  • zziplib Alpine 3.6, Alpine 3.5 0.13.67-r0

alpine advisories ALPINE-CVE-2017-5979

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

  • zziplib Arch Linux 0.13.66-2

arch linux advisories AVG-191

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-2017-5979 updated cvss 3.7

zziplib: NULL pointer dereference in prescan_entry (fseeko.c)

  • Red Hat Enterprise Linux 7 zziplib, zziplib-utils
    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

1.62% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • blogs.gentoo.org https://blogs.gentoo.org/ago/2017/02/09/zziplib-null-pointer-dereference-in-prescan_entry-fseeko-c/ referenced PoC, tagged "exploit" by a source, unverified

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

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.