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Fencer Intel
medium 6.5

CVE-2017-17440 json

GNU Libextractor 1.6 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted GI…

published 2017-12-06 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-8604

cvss
6.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.4%
EPSS 2.4% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known

Summary

GNU Libextractor 1.6 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted GIF, IT (Impulse Tracker), NSFE, S3M (Scream Tracker 3), SID, or XM (eXtended Module) file, as demonstrated by the EXTRACTOR_xm_extract_method function in plugins/xm_extractor.c.

Patch / fix

  • libextractor Debian 14, Debian 13, Debian 12 1:1.6-2

debian advisories DEBIAN-CVE-2017-17440

  • libextractor Ubuntu 16.04 LTS 1:1.3-4+deb9u3build0.16.04.1

ubuntu advisories UBUNTU-CVE-2017-17440

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

  • libextractor Arch Linux 1.7-1

arch linux advisories AVG-541

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-2017-17440 updated cvss 3.3

libextractor: NULL pointer dereference in the EXTRACTOR_xm_extract_method function

  • Red Hat All currently supported Red Hat products
    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

2.36% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bugs.debian.org https://bugs.debian.org/883528#35 referenced PoC, tagged "exploit" by a source, unverified
  • lists.gnu.org https://lists.gnu.org/archive/html/bug-libextractor/2017-11/msg00001.html referenced PoC, tagged "exploit" by a source, unverified
  • lists.gnu.org https://lists.gnu.org/archive/html/bug-libextractor/2017-11/msg00000.html referenced PoC, tagged "exploit" by a source, unverified
  • lists.gnu.org https://lists.gnu.org/archive/html/bug-libextractor/2017-11/msg00002.html referenced PoC, tagged "exploit" by a source, unverified
  • lists.gnu.org https://lists.gnu.org/archive/html/bug-libextractor/2017-11/msg00004.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 6.5 CVSS:3.0/AV:N/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.