Denial of Service via Exponential Backtracking in ANTLR Search Query Parser in Gerrit Code Review
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| Gerrit | Gerrit | unaffected |
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| Gerrit | Gerrit |
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No CVSS v3.1
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.322% probability within 30 days)
| Link | Providers |
|---|---|
| https://issues.gerritcodereview.com/issues/541287630 |
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| Metrics |
ssvc
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| First Time appeared |
Gerrit
Gerrit gerrit |
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| Vendors & Products |
Gerrit
Gerrit gerrit |
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| Description | Uncontrolled Resource Consumption (CWE-400 / CWE-407) in the ANTLR 3 search query parser (QueryParser / Query.g) in Gerrit Code Review versions 2.0.19 through 3.12.9, 3.13.0 through 3.13.8, and 3.14.0 through 3.14.2 allows an unauthenticated remote attacker (or an authenticated user if anonymous read access is disabled) to cause a persistent denial of service (CPU exhaustion and HTTP worker thread pool starvation requiring a server restart) via crafted search queries containing deeply nested parentheses sent to query evaluation endpoints (/changes/?q=, /accounts/?q=, /groups/?query=, /projects/?query=, /Documentation/?q=, /changes/{id}/query?expression=, or SSH gerrit query). Because syntactic predicates in conditionOr and conditionAnd recurse via conditionBase without memoization prior to capability or visibility checks and worker threads do not abort when the client disconnects, a small number of requests (such as 25 requests matching default httpd.maxThreads) can permanently pin all HTTP worker threads. This issue is fixed in Gerrit Code Review versions 3.12.10, 3.13.9, and 3.14.3. | |
| Title | Denial of Service via Exponential Backtracking in ANTLR Search Query Parser in Gerrit Code Review | |
| Weaknesses | CWE-400 CWE-407 CWE-834 |
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| References |
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| Metrics |
cvssV4_0
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