| Package | Affected versions | Patched versions |
|---|---|---|
| ssh | = 1.2.24= 1.2.25= 1.2.26= 1.2.27= 1.2.28= 1.2.29= 1.2.30= 1.2.31 |
The IDEA cipher as implemented by SSH1 does not protect the final block of a message against modification, which allows remote attackers to modify the block without detection by changing its cyclic redundancy check (CRC) to match the modifications to the message.
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