Off-by-one error in the pngcrush_measure_idat function in pngcrush.c in pngcrush before 1.7.84 allows remote attackers to cause a denial of…

published 2017-10-06 9 y ago modified 2026-06-17 4 mo ago also EUVD-2015-2267

cvss: 7.8; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 2.9%; EPSS 2.9% chance of exploitation in 30 days, percentile 86%
public exploits: 0; none known

Off-by-one error in the pngcrush_measure_idat function in pngcrush.c in pngcrush before 1.7.84 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted PNG file.

Patch / fix

distros 1 links 3

fltk Azure Linux 3.0 1.3.8-1
teckit Azure Linux 3.0 2.5.12-4

azure linux advisories AZL-44265 AZL-44913

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

sourceforge.net/p/pmt/news/2015/02/pngcrush-1784-released/ advisory
openwall.com/lists/oss-security/2015/03/01/1 advisory
bugzilla.redhat.com/show_bug.cgi?id=1198171 advisory

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-2015-2158 updated 2026-11-07 cvss 4.4

pngcrush: pngcrush_measure_idat() off-by-one error

Red Hat Enterprise Linux 7 pngcrush
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

2.88% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	7.8	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	2.0	6.8	AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-189 Numeric Errors

References

sourceforge.net /p/pmt/news/2015/02/pngcrush-1784-released/
patch, third-party-advisory
openwall.com /lists/oss-security/2015/03/01/1
mailing-list, patch, third-party-advisory
bugzilla.redhat.com /show_bug.cgi?id=1198171
issue-tracking, patch, third-party-advisory
securityfocus.com /bid/72830
vdb-entry, third-party-advisory

Sources

CVE List CVE-2015-2158
NVD CVE-2015-2158

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.

Summary