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Bug #5057

closed
JL SB

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

Bug #5057: dns: probing/parser can return error when it should return incomplete

Added by Jeff Lucovsky about 4 years ago. Updated over 3 years ago.

Status:
Closed
Priority:
Normal
Assignee:
Shivani Bhardwaj
Target version:
6.0.5
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 open — 1 closed)

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

JL Updated by Jeff Lucovsky about 4 years ago Actions
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 #1

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

SB Updated by Shivani Bhardwaj almost 4 years ago Actions
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 #2

  • Status changed from Assigned to In Progress

JI Updated by Jason Ish almost 4 years ago Actions
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 #3

  • Status changed from In Progress to In Review

SB Updated by Shivani Bhardwaj almost 4 years ago Actions
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 #4

  • Status changed from In Review to Resolved

SB Updated by Shivani Bhardwaj almost 4 years ago Actions
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 #5

  • Status changed from Resolved to Closed

VJ Updated by Victor Julien over 3 years ago Actions
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 #6

  • Private changed from Yes to No
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