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Bug #5058

closed

dns: probing/parser can return error when it should return incomplete

Added by Jeff Lucovsky over 3 years ago. Updated over 2 years ago.

Status:
Closed
Priority:
Normal
Assignee:
Target version:
Affected Versions:
Effort:
Difficulty:
Label:

Description

The hostname parsing in the DNS parser will return an error when it runs out of data instead of incomplete. This can result in a specially crafted DNS payload not being detected as DNS.

Suricata-Verify test showing DNS stream being picked up as ENIP:
https://github.com/OISF/suricata-verify/pull/676

Fix with master (nom7) is trivially done by moving error handling to the question mark operator. Its likely the same is true for 5.0.x and 6.0.x. This will probably ripple up incomplete or error up the parse chain.


Related issues 1 (0 open1 closed)

Copied from Suricata - Bug #5034: dns: probing/parser can return error when it should return incompleteClosedJason IshActions
#1

Updated by Jeff Lucovsky over 3 years ago

  • Copied from Bug #5034: dns: probing/parser can return error when it should return incomplete added
#2

Updated by Jeff Lucovsky about 3 years ago

  • Status changed from Assigned to In Progress
#3

Updated by Jeff Lucovsky about 3 years ago

  • Status changed from In Progress to In Review
#4

Updated by Victor Julien about 3 years ago

  • Status changed from In Review to Resolved
#5

Updated by Jeff Lucovsky about 3 years ago

  • Status changed from Resolved to Closed
#6

Updated by Victor Julien over 2 years ago

  • Private changed from Yes to No
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