CVE-2017-16938

optipng: global buffer overflow in gifread.c:LZWReadByte when parsing malicious GIF

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Severity

Low

Red Hat Product Security

3.3

CVSS 3.0

Review impact separately from score.

Published · November 24, 2017

Updated · May 13, 2026

Description

An invalid memory write flaw was found in the way OptiPNG handles processing of GIF files. This flaw could potentially be used to crash the OptiPNG program by tricking it into processing crafted GIF files.

Statement

Red Hat Product Security has rated this issue as having Low security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 3.3
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

CWE-121 · Stack-based Buffer Overflow