Twisted: Denial of Service (DoS) in twisted.names via Crafted DNS Compression Pointer Chains
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| twisted | twisted | affected |
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Configuration 1 [-]
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No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Twisted | Twisted |
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| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-grgv-6hw6-v9g4 | Twisted has a Denial of Service (DoS) in twisted.names via Crafted DNS Compression Pointer Chains |
Ubuntu USN |
USN-8380-1 | Twisted vulnerability |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.433% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:twisted:twisted:*:*:*:*:*:*:*:* cpe:2.3:a:twisted:twisted:26.4.0:rc1:*:*:*:*:*:* |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Twisted
Twisted twisted |
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| Vendors & Products |
Twisted
Twisted twisted |
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 26.4.0rc2, the twisted.names module is vulnerable to a Denial of Service (DoS) attack via resource exhaustion during DNS name decompression. A remote, unauthenticated attacker can exploit this by sending a crafted TCP DNS packet containing deeply chained compression pointers. This flaw bypasses previous loop-prevention logic, causing the single-threaded Twisted reactor to hang while processing millions of recursive lookups, effectively freezing the server. This vulnerability is fixed in 26.4.0rc2. | |
| Title | Twisted: Denial of Service (DoS) in twisted.names via Crafted DNS Compression Pointer Chains | |
| Weaknesses | CWE-400 CWE-407 |
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| References |
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| Metrics |
cvssV3_1
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