Advisory details:
github_osv / GHSA-389x-839f-4rhx
| Advisory ID | github_osv/GHSA-389x-839f-4rhx |
| Aliases |
CVE-2025-25193
|
| Summary | Denial of Service attack on windows app using Netty ### Summary An unsafe reading of environment file could potentially cause a denial of service in Netty. When loaded on an Windows application, Netty attemps to load a file that does not exist. If an attacker creates such a large file, the Netty application crash. ### Details A similar issue was previously reported in https://github.com/netty/netty/security/advisories/GHSA-xq3w-v528-46rv This issue was fixed, but the fix was incomplete in that null-bytes were not counted against the input limit. ### PoC The PoC is the same as for https://github.com/netty/netty/security/advisories/GHSA-xq3w-v528-46rv with the detail that the file should only contain null-bytes; 0x00. When the null-bytes are encountered by the `InputStreamReader`, it will issue replacement characters in its charset decoding, which will fill up the line-buffer in the `BufferedReader.readLine()`, because the replacement character is not a line-break character. ### Impact Impact is the same as https://github.com/netty/netty/security/advisories/GHSA-xq3w-v528-46rv |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 5.0 |
| Risk | 2.5 |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| System | Score | Found at |
|---|---|---|
| cvssv3.1 | 5.5 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/02/GHSA-389x-839f-4rhx/GHSA-389x-839f-4rhx.json |
| generic_textual | MODERATE |
| Reference id | Reference type | URL |
|---|---|---|
| https://github.com/netty/netty | ||
| https://github.com/netty/netty/commit/d1fbda62d3a47835d3fb35db8bd42ecc205a5386 | ||
| https://security.netapp.com/advisory/ntap-20250221-0006 | ||
| CVE-2025-25193 | https://nvd.nist.gov/vuln/detail/CVE-2025-25193 | |
| GHSA-389x-839f-4rhx | https://github.com/netty/netty/security/advisories/GHSA-389x-839f-4rhx |
No EPSS data available for this advisory.
| Patch URL | |
|---|---|
| There are no known patches. | |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
Vector: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-02-11T15:22:08Z/
Decision: Track
Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2025/25xxx/CVE-2025-25193.json
Source Advisory: vulnrichment/CVE-2025-25193
[{'Exploitation': 'poc'},
{'Automatable': 'no'},
{'Technical Impact': 'partial'},
{'Mission Prevalence': 'minimal'},
{'Public Well-being Impact': 'material'},
{'Mission & Well-being': 'medium'}]