Search criteria
4 vulnerabilities found for russh by Eugeny
CVE-2025-54804 (GCVE-0-2025-54804)
Vulnerability from cvelistv5 – Published: 2025-08-05 00:05 – Updated: 2025-08-05 14:44
VLAI?
Title
Russh is missing an overflow check during channel windows adjust
Summary
Russh is a Rust SSH client & server library. In versions 0.54.0 and below, the channel window adjust message of the SSH protocol is used to track the free space in the receive buffer of the other side of a channel. The current implementation takes the value from the message and adds it to an internal state value. This can result in a integer overflow. If the Rust code is compiled with overflow checks, it will panic. A malicious client can crash a server. This is fixed in version 0.54.1.
Severity ?
6.5 (Medium)
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
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|---|---|---|---|---|---|---|---|---|
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CVE-2024-43410 (GCVE-0-2024-43410)
Vulnerability from cvelistv5 – Published: 2024-08-21 15:09 – Updated: 2024-08-21 15:35
VLAI?
Title
Russh has an OOM Denial of Service due to allocation of untrusted amount
Summary
Russh is a Rust SSH client & server library. Allocating an untrusted amount of memory allows any unauthenticated user to OOM a russh server. An SSH packet consists of a 4-byte big-endian length, followed by a byte stream of this length.
After parsing and potentially decrypting the 4-byte length, russh allocates enough memory for this bytestream, as a performance optimization to avoid reallocations later. But this length is entirely untrusted and can be set to any value by the client, causing this much memory to be allocated, which will cause the process to OOM within a few such requests. This vulnerability is fixed in 0.44.1.
Severity ?
7.5 (High)
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
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CVE-2025-54804 (GCVE-0-2025-54804)
Vulnerability from nvd – Published: 2025-08-05 00:05 – Updated: 2025-08-05 14:44
VLAI?
Title
Russh is missing an overflow check during channel windows adjust
Summary
Russh is a Rust SSH client & server library. In versions 0.54.0 and below, the channel window adjust message of the SSH protocol is used to track the free space in the receive buffer of the other side of a channel. The current implementation takes the value from the message and adds it to an internal state value. This can result in a integer overflow. If the Rust code is compiled with overflow checks, it will panic. A malicious client can crash a server. This is fixed in version 0.54.1.
Severity ?
6.5 (Medium)
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
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|---|---|---|---|---|---|---|---|---|
|
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CVE-2024-43410 (GCVE-0-2024-43410)
Vulnerability from nvd – Published: 2024-08-21 15:09 – Updated: 2024-08-21 15:35
VLAI?
Title
Russh has an OOM Denial of Service due to allocation of untrusted amount
Summary
Russh is a Rust SSH client & server library. Allocating an untrusted amount of memory allows any unauthenticated user to OOM a russh server. An SSH packet consists of a 4-byte big-endian length, followed by a byte stream of this length.
After parsing and potentially decrypting the 4-byte length, russh allocates enough memory for this bytestream, as a performance optimization to avoid reallocations later. But this length is entirely untrusted and can be set to any value by the client, causing this much memory to be allocated, which will cause the process to OOM within a few such requests. This vulnerability is fixed in 0.44.1.
Severity ?
7.5 (High)
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
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|---|---|---|---|---|---|---|---|---|
|
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