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Fencer Vulns
medium 5.5

CVE-2017-17669 json

There is a heap-based buffer over-read in the Exiv2::Internal::PngChunk::keyTXTChunk function of pngchunk_int.cpp in Exiv2 0.26.

published 2017-12-13 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-0054

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits
0
none known

Summary

There is a heap-based buffer over-read in the Exiv2::Internal::PngChunk::keyTXTChunk function of pngchunk_int.cpp in Exiv2 0.26. A crafted PNG file will lead to a remote denial of service attack.

Patch / fix

  • exiv2 Debian 14, Debian 13, Debian 12 0.27.2-6

debian advisories DEBIAN-CVE-2017-17669

  • exiv2 Ubuntu 14.04 LTS 0.23-1ubuntu2.2
  • exiv2 Ubuntu 16.04 LTS 0.25-2.1ubuntu16.04.3
  • exiv2 Ubuntu 18.04 LTS 0.25-3.1ubuntu0.18.04.2

ubuntu advisories UBUNTU-CVE-2017-17669

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

  • exiv2 SLES 12 SP4, SLES 12 SP3, SLED 12 SP4 +5 more 0.23-12.5.1

suse advisories SUSE-SU-2018:3882-2SUSE-SU-2018:3882-1

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-2017-17669 updated cvss 4.4

exiv2: Heap-based buffer over-read in PngChunk::keyTXTChunk function of pngchunk_int.cpp

  • Red Hat Enterprise Linux 6 exiv2, exiv2-libs Red Hat Enterprise Linux 7 exiv2, exiv2-libs
    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

1.60% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/Exiv2/exiv2/issues/187 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/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 Vulns 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.