Mirror/zeek
1
0
Fork 0
mirror of https://github.com/zeek/zeek.git synced 2025-10-02 06:38:20 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Prefer explicit construction to coercion in record initialization

Browse source 
While we support initializing records via coercion from an expression
list, e.g.,

    local x: X = [$x1=1, $x2=2];

this can sometimes obscure the code to readers, e.g., when assigning to
value declared and typed elsewhere. The language runtime has a similar
overhead since instead of just constructing a known type it needs to
check at runtime that the coercion from the expression list is valid;
this can be slower than just writing the readible code in the first
place, see #4559.

With this patch we use explicit construction, e.g.,

    local x = X($x1=1, $x2=2);
This commit is contained in:
Benjamin Bannier 2025-07-10 09:42:44 +02:00 • committed by Christian Kreibich
parent 54f9e45597
commit d5fd29edcd
139 changed files with 786 additions and 788 deletions
Download patch file Download diff file Expand all files Collapse all files

76
scripts/policy/protocols/http/detect-sqli.zeek
View file

@ -87,43 +87,43 @@ event zeek_init() &priority=3
# Add filters to the metrics so that the metrics framework knows how to
# determine when it looks like an actual attack and how to respond when
# thresholds are crossed.
local r1: SumStats::Reducer = [$stream="http.sqli.attacker", $apply=set(SumStats::SUM, SumStats::SAMPLE), $num_samples=collect_SQLi_samples];
SumStats::create([$name="detect-sqli-attackers",
$epoch=sqli_requests_interval,
$reducers=set(r1),
$threshold_val(key: SumStats::Key, result: SumStats::Result) =
{
return result["http.sqli.attacker"]$sum;
},
$threshold=sqli_requests_threshold,
$threshold_crossed(key: SumStats::Key, result: SumStats::Result) =
{
local r = result["http.sqli.attacker"];
NOTICE([$note=SQL_Injection_Attacker,
$msg="An SQL injection attacker was discovered!",
$email_body_sections=vector(format_sqli_samples(r$samples)),
$src=key$host,
$identifier=cat(key$host)]);
}]);
local r1 = SumStats::Reducer($stream="http.sqli.attacker", $apply=set(SumStats::SUM, SumStats::SAMPLE), $num_samples=collect_SQLi_samples);
SumStats::create(SumStats::SumStat($name="detect-sqli-attackers",
$epoch=sqli_requests_interval,
$reducers=set(r1),
$threshold_val(key: SumStats::Key, result: SumStats::Result) =
{
return result["http.sqli.attacker"]$sum;
},
$threshold=sqli_requests_threshold,
$threshold_crossed(key: SumStats::Key, result: SumStats::Result) =
{
local r = result["http.sqli.attacker"];
NOTICE(Notice::Info($note=SQL_Injection_Attacker,
$msg="An SQL injection attacker was discovered!",
$email_body_sections=vector(format_sqli_samples(r$samples)),
$src=key$host,
$identifier=cat(key$host)));
}));
local r2: SumStats::Reducer = [$stream="http.sqli.victim", $apply=set(SumStats::SUM, SumStats::SAMPLE), $num_samples=collect_SQLi_samples];
SumStats::create([$name="detect-sqli-victims",
$epoch=sqli_requests_interval,
$reducers=set(r2),
$threshold_val(key: SumStats::Key, result: SumStats::Result) =
{
return result["http.sqli.victim"]$sum;
},
$threshold=sqli_requests_threshold,
$threshold_crossed(key: SumStats::Key, result: SumStats::Result) =
{
local r = result["http.sqli.victim"];
NOTICE([$note=SQL_Injection_Victim,
$msg="An SQL injection victim was discovered!",
$email_body_sections=vector(format_sqli_samples(r$samples)),
$src=key$host,
$identifier=cat(key$host)]);
}]);
local r2 = SumStats::Reducer($stream="http.sqli.victim", $apply=set(SumStats::SUM, SumStats::SAMPLE), $num_samples=collect_SQLi_samples);
SumStats::create(SumStats::SumStat($name="detect-sqli-victims",
$epoch=sqli_requests_interval,
$reducers=set(r2),
$threshold_val(key: SumStats::Key, result: SumStats::Result) =
{
return result["http.sqli.victim"]$sum;
},
$threshold=sqli_requests_threshold,
$threshold_crossed(key: SumStats::Key, result: SumStats::Result) =
{
local r = result["http.sqli.victim"];
NOTICE(Notice::Info($note=SQL_Injection_Victim,
$msg="An SQL injection victim was discovered!",
$email_body_sections=vector(format_sqli_samples(r$samples)),
$src=key$host,
$identifier=cat(key$host)));
}));
}
event http_request(c: connection, method: string, original_URI: string,
@ -136,7 +136,7 @@ event http_request(c: connection, method: string, original_URI: string,
{
add c$http$tags[URI_SQLI];
SumStats::observe("http.sqli.attacker", [$host=c$id$orig_h], [$str=original_URI]);
SumStats::observe("http.sqli.victim", [$host=c$id$resp_h], [$str=original_URI]);
SumStats::observe("http.sqli.attacker", SumStats::Key($host=c$id$orig_h), SumStats::Observation($str=original_URI));
SumStats::observe("http.sqli.victim", SumStats::Key($host=c$id$resp_h), SumStats::Observation($str=original_URI));
}
}