libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.17, a crafted HEVC bitstream causes an out-of-bounds heap write confirmed by AddressSanitizer. The trigger is a stale ctb_info.log2unitSize after an SPS change where PicWidthInCtbsY and PicHeightInCtbsY stay constant but Log2CtbSizeY changes, causing set_SliceHeaderIndex to index past the allocated image metadata array and write 2 bytes past the end of a heap allocation.
This issue has been patched in version 1.0.17.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
Required
User action required
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Struktur Libde265
cpe:2.3:a:struktur:libde265:*:*:*:*:*:*:*:*
|
— |
1.0.17
|
References 3
https://github.com/strukturag/libde265/commit/c7891e412106130b83f8e8ea8b7f907e9…
security-advisories@github.com
https://github.com/strukturag/libde265/releases/tag/v1.0.17
security-advisories@github.com
https://github.com/strukturag/libde265/security/advisories/GHSA-653q-9f73-8hvg
security-advisories@github.com