Description
OpenJPH through 0.32.0 contains a heap out-of-bounds write vulnerability in the HTJ2K cleanup-pass decoder that allows attackers to corrupt memory via one-row codeblocks. Attackers can supply a crafted .j2c or .jph codestream with small precinct sizes, causing the decoder to write a second row past the codeblock buffer, resulting in memory corruption and crashes.
Metrics
CVSS 3.1 6.1/10
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| aous72 | OpenJPH | <= 0.32.0 |
References
- https://github.com/aous72/OpenJPH
- https://github.com/aous72/OpenJPH/blob/23c422895ce6c3a156935222e4715ee0b7be952c/src/core/codestream/ojph_codeblock.cpp#L79-L84
- https://github.com/aous72/OpenJPH/blob/23c422895ce6c3a156935222e4715ee0b7be952c/src/core/codestream/ojph_subband.cpp#L136-L142
- https://github.com/aous72/OpenJPH/blob/23c422895ce6c3a156935222e4715ee0b7be952c/src/core/coding/ojph_block_decoder32.cpp#L1135-L1155
- https://hackmd.io/@haind-pwn/openjph-htj2k-degenerate-codeblock-cleanup-oob-write
- https://www.vulncheck.com/advisories/openjph-through-0.32.0-heap-out-of-bounds-write-in-htj2k-cleanup-pass-decoder
Timeline
- Published
- Oct 15, 2026
- Last modified
- Oct 16, 2026
- NVD status
- Deferred