Description (CNA)
A heap-buffer-overflow vulnerability exists in the nothings stb TrueType library, up to version 1.26, that is used for parsing TrueType font files. The vulnerability exists in the stbtt__GetGlyphShapeTT() function within the nothings stb_truetype.h library when parsing malformed TTF (TrueType Font) files. The vulnerability resides in the glyph data parsing path. An attacker can craft a malformed TTF file with an inflated endPtsOfContours value and truncate the remaining glyph data. When an application utilizing stb_truetype.h (such as various game engines or graphics software) attempts to load, bake, or render this malformed font via stbtt_GetGlyphShape(), the parser will attempt to read past the end of the glyph data buffer, triggering the out-of-bounds read.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Sean Barrett (nothings) / nothings stb | affected 1.26 |
CWE
No CWE identifiers supplied.
References
- https://cwe.mitre.org/data/definitions/122.html
- https://github.com/nothings/stb
- https://github.com/nothings/stb/issues/1905
- https://kb.cert.org/vuls/id/987105
ADP enrichment
No English description supplied.
No English description supplied.