CVE-2017-6193

MEDIUM

apng_disassembler < 2.8 - Buffer Overflow via Malformed IHDR Chunk

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2017-6193. PoCs published by Alwin Peppels.

AI-analyzed exploit summary This exploit demonstrates a buffer overflow in APNGDis 2.8 via a malformed PNG file with an oversized IHDR chunk descriptor (0xFFFFFFF4). The PoC triggers a heap corruption, leading to a crash (DoS) and potential arbitrary code execution under controlled conditions.

Description

Buffer overflow in APNGDis 2.8 and earlier allows remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted image containing a malformed image size descriptor in the IHDR chunk.

Exploits (2)

exploitdb WORKING POC
by Alwin Peppels · textdosmultiple
https://www.exploit-db.com/exploits/41668

This exploit demonstrates a buffer overflow in APNGDis 2.8 via a malformed PNG file with an oversized IHDR chunk descriptor (0xFFFFFFF4). The PoC triggers a heap corruption, leading to a crash (DoS) and potential arbitrary code execution under controlled conditions.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: APNGDis 2.8
No auth needed
Prerequisites: Victim must open the malformed PNG file with APNGDis
devstral-2 · analyzed Feb 16, 2026 Full analysis →
exploitdb WORKING POC
by Alwin Peppels · textdosmultiple
https://www.exploit-db.com/exploits/41669

This exploit demonstrates a buffer overflow vulnerability in APNGDis 2.8 by manipulating the width and height fields in a PNG file's IHDR chunk, leading to memory corruption and a segmentation fault. The PoC file triggers invalid memory reads/writes, as confirmed by Valgrind output.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: APNGDis 2.8
No auth needed
Prerequisites: A malformed PNG file with manipulated IHDR chunk dimensions
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/41668/
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/97053
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/41669/

Scores

CVSS v3 5.5
EPSS 0.0785
EPSS Percentile 93.9%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Details

CWE
CWE-119
Status published
Products (1)
apng_disassembler_project/apng_disassembler < 2.8
Published Feb 20, 2018
Tracked Since Feb 18, 2026