Integer underflow in the unlzw function in unlzw.c in gzip before 1.4 on 64-bit platforms, as used in ncompress and probably others, allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted archive that uses LZW compression, leading to an array index error.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Gzip | Gnu | * | 1.3.13 (including) |
| Gzip | Gnu | 1.2.4 (including) | 1.2.4 (including) |
| Gzip | Gnu | 1.2.4a (including) | 1.2.4a (including) |
| Gzip | Gnu | 1.3 (including) | 1.3 (including) |
| Gzip | Gnu | 1.3.1 (including) | 1.3.1 (including) |
| Gzip | Gnu | 1.3.2 (including) | 1.3.2 (including) |
| Gzip | Gnu | 1.3.3 (including) | 1.3.3 (including) |
| Gzip | Gnu | 1.3.4 (including) | 1.3.4 (including) |
| Gzip | Gnu | 1.3.5 (including) | 1.3.5 (including) |
| Gzip | Gnu | 1.3.6 (including) | 1.3.6 (including) |
| Gzip | Gnu | 1.3.7 (including) | 1.3.7 (including) |
| Gzip | Gnu | 1.3.8 (including) | 1.3.8 (including) |
| Gzip | Gnu | 1.3.9 (including) | 1.3.9 (including) |
| Gzip | Gnu | 1.3.10 (including) | 1.3.10 (including) |
| Gzip | Gnu | 1.3.11 (including) | 1.3.11 (including) |
| Gzip | Gnu | 1.3.12 (including) | 1.3.12 (including) |