Ngiflib
CVE-2018-11576
CRITICAL
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionNVD
ngiflib.c in MiniUPnP ngiflib 0.4 has a heap-based buffer over-read in GifIndexToTrueColor.
AnalysisAI
ngiflib.c in MiniUPnP ngiflib 0.4 has a heap-based buffer over-read in GifIndexToTrueColor. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Technical ContextAI
This vulnerability is classified as Out-of-bounds Read (CWE-125), which allows attackers to read data from memory outside the intended buffer boundaries. ngiflib.c in MiniUPnP ngiflib 0.4 has a heap-based buffer over-read in GifIndexToTrueColor. Affected products include: Miniupnp Project Ngiflib.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate array indices and buffer lengths. Use memory-safe languages. Enable AddressSanitizer during testing.
ngiflib.c in MiniUPnP ngiflib 0.4 has a stack-based buffer overflow in DecodeGifImg. Rated critical severity (CVSS 9.8),
ngiflib 0.4 has a heap overflow in GetByte() at ngiflib.c:70 in NGIFLIB_NO_FILE mode, GetByte() reads memory buffer with
ngiflib 0.4 has a heap overflow in GetByteStr() at ngiflib.c:108 in NGIFLIB_NO_FILE mode, GetByteStr() copy memory buffe
ngiflib 0.4 has a heap-based buffer overflow in WritePixel() in ngiflib.c when called from DecodeGifImg, because deinter
The DecodeGifImg function in ngiflib.c in MiniUPnP ngiflib 0.4 does not consider the bounds of the pixels data structure
The DecodeGifImg function in ngiflib.c in MiniUPnP ngiflib 0.4 lacks certain checks against width and height, which allo
MiniUPnP ngiflib 0.4 has a NULL pointer dereference in GifIndexToTrueColor in ngiflib.c via a file that lacks a palette.
GifIndexToTrueColor in ngiflib.c in MiniUPnP ngiflib 0.4 has a Segmentation fault. Rated medium severity (CVSS 6.5), thi
ngiflib commit 84a75 was discovered to contain a segmentation violation via the function SDL_LoadAnimatedGif at ngiflibS
ngiflib commit fb271 was discovered to contain a segmentation violation via the function "main" at gif2tag.c. Rated medi
ngiflib commit 5e7292 was discovered to contain an infinite loop via the function DecodeGifImg at ngiflib.c. Rated mediu
ngiflib 0.4 has a heap-based buffer overflow in WritePixels() in ngiflib.c when called from DecodeGifImg, because deinte
Same weakness CWE-125 – Out-of-bounds Read
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External POC / Exploit Code
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