جزئیات آسیب‌پذیری

OWASP Coraza WAF is a golang modsecurity compatible web application firewall library. From 3.0.0 until 3.8.1, Coraza silently drops arguments after SecArgumentsLimit in internal/corazawaf/transaction.go, while internal/bodyprocessors/urlencoded.go writes ARGS_POST without enforcing the cap. The flaw is triggered when an unauthenticated attacker sends more arguments than SecArgumentsLimit or supplies bodies that expand beyond the configured argument and flattening budgets. An unauthenticated attacker can flood requests with arguments so excess values are silently omitted from ARGS, ARGS_GET, ARGS_NAMES, ARGS_GET_NAMES, ARGS_POST, or ARGS_PATH before security rules inspect them; affected urlencoded and JSON processing can also consume excessive memory. The omission can bypass WAF rules protecting the downstream application, and unbounded or amplified argument processing can cause memory consumption and service degradation. This issue is fixed in version 3.8.1.

• https://github.com/corazawaf/coraza/commit/146c2f79f39ad16f13787e7d67ad400f8d8cb9a3 x_refsource_MISC
• https://github.com/corazawaf/coraza/commit/b98359bb7e7606c95100dcc7ad490d2d624e6dea x_refsource_MISC
• https://github.com/corazawaf/coraza/releases/tag/v3.8.1 x_refsource_MISC
• https://github.com/corazawaf/coraza/security/advisories/GHSA-6r3q-mjv7-xr8m x_refsource_CONFIRM