| ID |
CVE-2025-66038
|
| Sažetak |
OpenSC is an open source smart card tools and middleware. Prior to version 0.27.0, sc_compacttlv_find_tag searches a compact-TLV buffer for a given tag. In compact-TLV, a single byte encodes the tag (high nibble) and value length (low nibble). With a 1-byte buffer {0x0A}, the encoded element claims tag=0 and length=10 but no value bytes follow. Calling sc_compacttlv_find_tag with search tag 0x00 returns a pointer equal to buf+1 and outlen=10 without verifying that the claimed value length fits within the remaining buffer. In cases where the sc_compacttlv_find_tag is provided untrusted data (such as being read from cards/files), attackers may be able to influence it to return out-of-bounds pointers leading to downstream memory corruption when subsequent code tries to dereference the pointer. This issue has been patched in version 0.27.0. |
| Reference |
|
| CVSS |
| Base: | 3.9 |
| Impact: | 3.4 |
| Exploitability: | 0.5 |
|
| Pristup |
| Vektor | Složenost | Autentikacija |
| PHYSICAL |
HIGH |
NONE |
|
| Impact |
| Povjerljivost | Cjelovitost | Dostupnost |
| LOW |
LOW |
LOW |
|
| CVSS vektor |
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L |
| Zadnje važnije ažuriranje |
30-03-2026 - 18:16 |
| Objavljeno |
30-03-2026 - 18:16 |
