From ee0881bf720fa8fcb7ea8ffea8e0a1dacf00db33 Mon Sep 17 00:00:00 2001 From: Felipe Zipitria Date: Sun, 11 Dec 2022 09:41:00 -0300 Subject: [PATCH 1/2] feat(932125): update list with latest aliases Signed-off-by: Felipe Zipitria --- regex-assembly/932125.ra | 31 +++++++++++++++++-- rules/REQUEST-932-APPLICATION-ATTACK-RCE.conf | 2 +- 2 files changed, 30 insertions(+), 3 deletions(-) diff --git a/regex-assembly/932125.ra b/regex-assembly/932125.ra index 767162d71..d4878d281 100644 --- a/regex-assembly/932125.ra +++ b/regex-assembly/932125.ra @@ -3,6 +3,8 @@ ##! Word list for rule 932125 (RCE Windows command injection - PowerShell aliases) ##! +##! This list comes from the powershell source code. Can be updated using this oneliner: +##! curl -s https://raw.githubusercontent.com/PowerShell/PowerShell/master/src/System.Management.Automation/engine/InitialSessionState.cs -o - | awk -F\" '/new SessionStateAliasEntry\("/ { print $2; }' ##! To prevent some FP for a command, you can require command parameters ##! after a command. Only do this if the command regularly causes FP and if ##! allowing the bare command (without parameters) is not too dangerous. @@ -86,21 +88,28 @@ ac@ asnp@ + cd@ ##! disabled for FP: cat@ chdir@ clc@ + ##! disabled for FP: clear clhy@ cli@ clp@ + cls clv@ + cnsn ##! disabled for FP: compare@ ##! disabled for FP: copy@ + cp@ cpi@ cpp@ cvpa@ dbp@ del@ + diff@ dir@ + dnsn ebp@ epal@ epcsv@ @@ -120,6 +129,7 @@ gcm@ gcs@ gdr@ + gerr ghy@ gi@ gjb@ @@ -128,6 +138,7 @@ gmo@ gp@ gps@ + gpv ##! disabled for FP: group gsn@ gsnp@ @@ -135,6 +146,7 @@ gu@ gv@ gwmi@ + ##! disabled for FP: h ##! disabled for FP: history icm@ iex@ @@ -144,18 +156,25 @@ ipcsv@ ipmo@ ipsn@ + irm@ + ise@ iwmi@ iwr@ ##! disabled for FP: kill - lp@ + ls + man@ + md@ ##! disabled for FP: measure mi@ + mount@ ##! disabled for FP: move mp@ + mv@ nal@ ndr@ ni@ nmo@ + npssc nsn@ nv@ ogv@ @@ -163,20 +182,23 @@ popd@ pushd@ ##! disabled for FP: pwd + ##! disabled for FP: r rbp@ rcjb@ + rcsn rd@ rdr@ ren@ ri@ rjb@ + rm@ rmdir@ rmo@ rni@ rnp@ rp@ rsn@ - rsnp@ + rujb rv@ rvpa@ rwmi@ @@ -188,16 +210,21 @@ sc@ ##! disabled for FP: select ##! disabled for FP: set + shcm si@ sl@ + ##! disabled for FP: sleep sls@ + ##! disabled for FP: sort sp@ spjb@ spps@ spsv@ ##! disabled for FP: start + sujb sv@ swmi@ + ##! disabled for FP: tee trcm@ ##! disabled for FP: type ##! disabled for FP: where diff --git a/rules/REQUEST-932-APPLICATION-ATTACK-RCE.conf b/rules/REQUEST-932-APPLICATION-ATTACK-RCE.conf index 647833d5d..5dff2de71 100644 --- a/rules/REQUEST-932-APPLICATION-ATTACK-RCE.conf +++ b/rules/REQUEST-932-APPLICATION-ATTACK-RCE.conf @@ -296,7 +296,7 @@ SecRule REQUEST_COOKIES|!REQUEST_COOKIES:/__utm/|REQUEST_COOKIES_NAMES|ARGS_NAME # (consult https://coreruleset.org/docs/development/regex_assembly/ for details): # crs-toolchain regex update 932125 # -SecRule REQUEST_COOKIES|!REQUEST_COOKIES:/__utm/|REQUEST_COOKIES_NAMES|ARGS_NAMES|ARGS|XML:/* "@rx (?i)(?:[\n\r;`\{]|\|\|?|&&?)[\s\v]*[\s\v\"'-\(,@]*(?:[\"'\.-9A-Z_a-z]+/|(?:[\"'\x5c\^]*[0-9A-Z_a-z][\"'\x5c\^]*:.*|[ \"'\.-9A-Z\x5c\^-_a-z]*)\x5c)?[\"\^]*(?:(?:a[\"\^]*(?:c|s[\"\^]*n[\"\^]*p)|c[\"\^]*(?:h[\"\^]*d[\"\^]*i[\"\^]*r|l[\"\^]*(?:[cipv]|h[\"\^]*y)|p[\"\^]*[ip]|v[\"\^]*p[\"\^]*a)|d[\"\^]*(?:b[\"\^]*p|e[\"\^]*l|i[\"\^]*r)|e[\"\^]*(?:b[\"\^]*p|p[\"\^]*(?:a[\"\^]*l|c[\"\^]*s[\"\^]*v|s[\"\^]*n)|[tx][\"\^]*s[\"\^]*n)|f[\"\^]*(?:[cltw]|o[\"\^]*r[\"\^]*e[\"\^]*a[\"\^]*c[\"\^]*h)|i[\"\^]*(?:c[\"\^]*m|e[\"\^]*x|h[\"\^]*y|i|p[\"\^]*(?:a[\"\^]*l|c[\"\^]*s[\"\^]*v|m[\"\^]*o|s[\"\^]*n)|w[\"\^]*(?:m[\"\^]*i|r))|l[\"\^]*p|m[\"\^]*[ip]|n[\"\^]*(?:a[\"\^]*l|d[\"\^]*r|[iv]|m[\"\^]*o|s[\"\^]*n)|o[\"\^]*g[\"\^]*v|p[\"\^]*(?:o[\"\^]*p|u[\"\^]*s[\"\^]*h)[\"\^]*d|t[\"\^]*r[\"\^]*c[\"\^]*m|w[\"\^]*j[\"\^]*b)[\"\^]*|g[\"\^]*(?:(?:(?:a[\"\^]*)?l|b[\"\^]*p|d[\"\^]*r|h[\"\^]*y|(?:w[\"\^]*m[\"\^]*)?i|j[\"\^]*b|[u-v])[\"\^]*|c[\"\^]*(?:[ims][\"\^]*)?|m[\"\^]*(?:o[\"\^]*)?|p[\"\^]*(?:s[\"\^]*)?|s[\"\^]*(?:n[\"\^]*(?:p[\"\^]*)?|v[\"\^]*))|r[\"\^]*(?:(?:(?:b[\"\^]*)?p|(?:c[\"\^]*)?j[\"\^]*b|e[\"\^]*n|(?:w[\"\^]*m[\"\^]*)?i|m[\"\^]*(?:d[\"\^]*i[\"\^]*r|o)|n[\"\^]*[ip])[\"\^]*|d[\"\^]*(?:r[\"\^]*)?|s[\"\^]*n[\"\^]*(?:p[\"\^]*)?|v[\"\^]*(?:p[\"\^]*a[\"\^]*)?)|s[\"\^]*(?:(?:a[\"\^]*(?:j[\"\^]*b|l|p[\"\^]*s|s[\"\^]*v)|b[\"\^]*p|[civ]|w[\"\^]*m[\"\^]*i)[\"\^]*|l[\"\^]*(?:s[\"\^]*)?|p[\"\^]*(?:(?:j[\"\^]*b|p[\"\^]*s|s[\"\^]*v)[\"\^]*)?))[\s\v,\.-/;-<>].*(?:\.[\"\^]*[0-9A-Z_a-z]+)?\b" \ +SecRule REQUEST_COOKIES|!REQUEST_COOKIES:/__utm/|REQUEST_COOKIES_NAMES|ARGS_NAMES|ARGS|XML:/* "@rx (?i)(?:[\n\r;`\{]|\|\|?|&&?)[\s\v]*[\s\v\"'-\(,@]*(?:[\"'\.-9A-Z_a-z]+/|(?:[\"'\x5c\^]*[0-9A-Z_a-z][\"'\x5c\^]*:.*|[ \"'\.-9A-Z\x5c\^-_a-z]*)\x5c)?[\"\^]*(?:(?:a[\"\^]*(?:c|s[\"\^]*n[\"\^]*p)|e[\"\^]*(?:b[\"\^]*p|p[\"\^]*(?:a[\"\^]*l|c[\"\^]*s[\"\^]*v|s[\"\^]*n)|[tx][\"\^]*s[\"\^]*n)|f[\"\^]*(?:[cltw]|o[\"\^]*r[\"\^]*e[\"\^]*a[\"\^]*c[\"\^]*h)|i[\"\^]*(?:[cr][\"\^]*m|e[\"\^]*x|h[\"\^]*y|i|p[\"\^]*(?:a[\"\^]*l|c[\"\^]*s[\"\^]*v|m[\"\^]*o|s[\"\^]*n)|s[\"\^]*e|w[\"\^]*(?:m[\"\^]*i|r))|m[\"\^]*(?:a[\"\^]*n|[dipv]|o[\"\^]*u[\"\^]*n[\"\^]*t)|o[\"\^]*g[\"\^]*v|p[\"\^]*(?:o[\"\^]*p|u[\"\^]*s[\"\^]*h)[\"\^]*d|t[\"\^]*r[\"\^]*c[\"\^]*m|w[\"\^]*j[\"\^]*b)[\"\^]*[\s\v,\.-/;-<>].*|c[\"\^]*(?:(?:(?:d|h[\"\^]*d[\"\^]*i[\"\^]*r|v[\"\^]*p[\"\^]*a)[\"\^]*|p[\"\^]*(?:[ip][\"\^]*)?)[\s\v,\.-/;-<>].*|l[\"\^]*(?:(?:[cipv]|h[\"\^]*y)[\"\^]*[\s\v,\.-/;-<>].*|s)|n[\"\^]*s[\"\^]*n)|d[\"\^]*(?:(?:b[\"\^]*p|e[\"\^]*l|i[\"\^]*(?:f[\"\^]*f|r))[\"\^]*[\s\v,\.-/;-<>].*|n[\"\^]*s[\"\^]*n)|g[\"\^]*(?:(?:(?:(?:a[\"\^]*)?l|b[\"\^]*p|d[\"\^]*r|h[\"\^]*y|(?:w[\"\^]*m[\"\^]*)?i|j[\"\^]*b|[u-v])[\"\^]*|c[\"\^]*(?:[ims][\"\^]*)?|m[\"\^]*(?:o[\"\^]*)?|s[\"\^]*(?:n[\"\^]*(?:p[\"\^]*)?|v[\"\^]*))[\s\v,\.-/;-<>].*|e[\"\^]*r[\"\^]*r|p[\"\^]*(?:(?:s[\"\^]*)?[\s\v,\.-/;-<>].*|v))|l[\"\^]*s|n[\"\^]*(?:(?:a[\"\^]*l|d[\"\^]*r|[iv]|m[\"\^]*o|s[\"\^]*n)[\"\^]*[\s\v,\.-/;-<>].*|p[\"\^]*s[\"\^]*s[\"\^]*c)|r[\"\^]*(?:(?:(?:(?:b[\"\^]*)?p|[es][\"\^]*n|(?:w[\"\^]*m[\"\^]*)?i|j[\"\^]*b|n[\"\^]*[ip])[\"\^]*|d[\"\^]*(?:r[\"\^]*)?|m[\"\^]*(?:(?:d[\"\^]*i[\"\^]*r|o)[\"\^]*)?|v[\"\^]*(?:p[\"\^]*a[\"\^]*)?)[\s\v,\.-/;-<>].*|c[\"\^]*(?:j[\"\^]*b[\"\^]*[\s\v,\.-/;-<>].*|s[\"\^]*n)|u[\"\^]*j[\"\^]*b)|s[\"\^]*(?:(?:(?:a[\"\^]*(?:j[\"\^]*b|l|p[\"\^]*s|s[\"\^]*v)|b[\"\^]*p|[civ]|w[\"\^]*m[\"\^]*i)[\"\^]*|l[\"\^]*(?:s[\"\^]*)?|p[\"\^]*(?:(?:j[\"\^]*b|p[\"\^]*s|s[\"\^]*v)[\"\^]*)?)[\s\v,\.-/;-<>].*|h[\"\^]*c[\"\^]*m|u[\"\^]*j[\"\^]*b))(?:\.[\"\^]*[0-9A-Z_a-z]+)?\b" \ "id:932125,\ phase:2,\ block,\ From 0cf952cadc9e8f5f45103425c98b1a82905945df Mon Sep 17 00:00:00 2001 From: Felipe Zipitria Date: Sun, 11 Dec 2022 10:26:53 -0300 Subject: [PATCH 2/2] fix: add removed command Signed-off-by: Felipe Zipitria --- regex-assembly/932125.ra | 1 + rules/REQUEST-932-APPLICATION-ATTACK-RCE.conf | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/regex-assembly/932125.ra b/regex-assembly/932125.ra index d4878d281..2a69987a1 100644 --- a/regex-assembly/932125.ra +++ b/regex-assembly/932125.ra @@ -198,6 +198,7 @@ rnp@ rp@ rsn@ + rsnp@ rujb rv@ rvpa@ diff --git a/rules/REQUEST-932-APPLICATION-ATTACK-RCE.conf b/rules/REQUEST-932-APPLICATION-ATTACK-RCE.conf index 5dff2de71..9e34e394b 100644 --- a/rules/REQUEST-932-APPLICATION-ATTACK-RCE.conf +++ b/rules/REQUEST-932-APPLICATION-ATTACK-RCE.conf @@ -296,7 +296,7 @@ SecRule REQUEST_COOKIES|!REQUEST_COOKIES:/__utm/|REQUEST_COOKIES_NAMES|ARGS_NAME # (consult https://coreruleset.org/docs/development/regex_assembly/ for details): # crs-toolchain regex update 932125 # -SecRule REQUEST_COOKIES|!REQUEST_COOKIES:/__utm/|REQUEST_COOKIES_NAMES|ARGS_NAMES|ARGS|XML:/* "@rx (?i)(?:[\n\r;`\{]|\|\|?|&&?)[\s\v]*[\s\v\"'-\(,@]*(?:[\"'\.-9A-Z_a-z]+/|(?:[\"'\x5c\^]*[0-9A-Z_a-z][\"'\x5c\^]*:.*|[ \"'\.-9A-Z\x5c\^-_a-z]*)\x5c)?[\"\^]*(?:(?:a[\"\^]*(?:c|s[\"\^]*n[\"\^]*p)|e[\"\^]*(?:b[\"\^]*p|p[\"\^]*(?:a[\"\^]*l|c[\"\^]*s[\"\^]*v|s[\"\^]*n)|[tx][\"\^]*s[\"\^]*n)|f[\"\^]*(?:[cltw]|o[\"\^]*r[\"\^]*e[\"\^]*a[\"\^]*c[\"\^]*h)|i[\"\^]*(?:[cr][\"\^]*m|e[\"\^]*x|h[\"\^]*y|i|p[\"\^]*(?:a[\"\^]*l|c[\"\^]*s[\"\^]*v|m[\"\^]*o|s[\"\^]*n)|s[\"\^]*e|w[\"\^]*(?:m[\"\^]*i|r))|m[\"\^]*(?:a[\"\^]*n|[dipv]|o[\"\^]*u[\"\^]*n[\"\^]*t)|o[\"\^]*g[\"\^]*v|p[\"\^]*(?:o[\"\^]*p|u[\"\^]*s[\"\^]*h)[\"\^]*d|t[\"\^]*r[\"\^]*c[\"\^]*m|w[\"\^]*j[\"\^]*b)[\"\^]*[\s\v,\.-/;-<>].*|c[\"\^]*(?:(?:(?:d|h[\"\^]*d[\"\^]*i[\"\^]*r|v[\"\^]*p[\"\^]*a)[\"\^]*|p[\"\^]*(?:[ip][\"\^]*)?)[\s\v,\.-/;-<>].*|l[\"\^]*(?:(?:[cipv]|h[\"\^]*y)[\"\^]*[\s\v,\.-/;-<>].*|s)|n[\"\^]*s[\"\^]*n)|d[\"\^]*(?:(?:b[\"\^]*p|e[\"\^]*l|i[\"\^]*(?:f[\"\^]*f|r))[\"\^]*[\s\v,\.-/;-<>].*|n[\"\^]*s[\"\^]*n)|g[\"\^]*(?:(?:(?:(?:a[\"\^]*)?l|b[\"\^]*p|d[\"\^]*r|h[\"\^]*y|(?:w[\"\^]*m[\"\^]*)?i|j[\"\^]*b|[u-v])[\"\^]*|c[\"\^]*(?:[ims][\"\^]*)?|m[\"\^]*(?:o[\"\^]*)?|s[\"\^]*(?:n[\"\^]*(?:p[\"\^]*)?|v[\"\^]*))[\s\v,\.-/;-<>].*|e[\"\^]*r[\"\^]*r|p[\"\^]*(?:(?:s[\"\^]*)?[\s\v,\.-/;-<>].*|v))|l[\"\^]*s|n[\"\^]*(?:(?:a[\"\^]*l|d[\"\^]*r|[iv]|m[\"\^]*o|s[\"\^]*n)[\"\^]*[\s\v,\.-/;-<>].*|p[\"\^]*s[\"\^]*s[\"\^]*c)|r[\"\^]*(?:(?:(?:(?:b[\"\^]*)?p|[es][\"\^]*n|(?:w[\"\^]*m[\"\^]*)?i|j[\"\^]*b|n[\"\^]*[ip])[\"\^]*|d[\"\^]*(?:r[\"\^]*)?|m[\"\^]*(?:(?:d[\"\^]*i[\"\^]*r|o)[\"\^]*)?|v[\"\^]*(?:p[\"\^]*a[\"\^]*)?)[\s\v,\.-/;-<>].*|c[\"\^]*(?:j[\"\^]*b[\"\^]*[\s\v,\.-/;-<>].*|s[\"\^]*n)|u[\"\^]*j[\"\^]*b)|s[\"\^]*(?:(?:(?:a[\"\^]*(?:j[\"\^]*b|l|p[\"\^]*s|s[\"\^]*v)|b[\"\^]*p|[civ]|w[\"\^]*m[\"\^]*i)[\"\^]*|l[\"\^]*(?:s[\"\^]*)?|p[\"\^]*(?:(?:j[\"\^]*b|p[\"\^]*s|s[\"\^]*v)[\"\^]*)?)[\s\v,\.-/;-<>].*|h[\"\^]*c[\"\^]*m|u[\"\^]*j[\"\^]*b))(?:\.[\"\^]*[0-9A-Z_a-z]+)?\b" \ +SecRule REQUEST_COOKIES|!REQUEST_COOKIES:/__utm/|REQUEST_COOKIES_NAMES|ARGS_NAMES|ARGS|XML:/* "@rx (?i)(?:[\n\r;`\{]|\|\|?|&&?)[\s\v]*[\s\v\"'-\(,@]*(?:[\"'\.-9A-Z_a-z]+/|(?:[\"'\x5c\^]*[0-9A-Z_a-z][\"'\x5c\^]*:.*|[ \"'\.-9A-Z\x5c\^-_a-z]*)\x5c)?[\"\^]*(?:(?:a[\"\^]*(?:c|s[\"\^]*n[\"\^]*p)|e[\"\^]*(?:b[\"\^]*p|p[\"\^]*(?:a[\"\^]*l|c[\"\^]*s[\"\^]*v|s[\"\^]*n)|[tx][\"\^]*s[\"\^]*n)|f[\"\^]*(?:[cltw]|o[\"\^]*r[\"\^]*e[\"\^]*a[\"\^]*c[\"\^]*h)|i[\"\^]*(?:[cr][\"\^]*m|e[\"\^]*x|h[\"\^]*y|i|p[\"\^]*(?:a[\"\^]*l|c[\"\^]*s[\"\^]*v|m[\"\^]*o|s[\"\^]*n)|s[\"\^]*e|w[\"\^]*(?:m[\"\^]*i|r))|m[\"\^]*(?:a[\"\^]*n|[dipv]|o[\"\^]*u[\"\^]*n[\"\^]*t)|o[\"\^]*g[\"\^]*v|p[\"\^]*(?:o[\"\^]*p|u[\"\^]*s[\"\^]*h)[\"\^]*d|t[\"\^]*r[\"\^]*c[\"\^]*m|w[\"\^]*j[\"\^]*b)[\"\^]*[\s\v,\.-/;-<>].*|c[\"\^]*(?:(?:(?:d|h[\"\^]*d[\"\^]*i[\"\^]*r|v[\"\^]*p[\"\^]*a)[\"\^]*|p[\"\^]*(?:[ip][\"\^]*)?)[\s\v,\.-/;-<>].*|l[\"\^]*(?:(?:[cipv]|h[\"\^]*y)[\"\^]*[\s\v,\.-/;-<>].*|s)|n[\"\^]*s[\"\^]*n)|d[\"\^]*(?:(?:b[\"\^]*p|e[\"\^]*l|i[\"\^]*(?:f[\"\^]*f|r))[\"\^]*[\s\v,\.-/;-<>].*|n[\"\^]*s[\"\^]*n)|g[\"\^]*(?:(?:(?:(?:a[\"\^]*)?l|b[\"\^]*p|d[\"\^]*r|h[\"\^]*y|(?:w[\"\^]*m[\"\^]*)?i|j[\"\^]*b|[u-v])[\"\^]*|c[\"\^]*(?:[ims][\"\^]*)?|m[\"\^]*(?:o[\"\^]*)?|s[\"\^]*(?:n[\"\^]*(?:p[\"\^]*)?|v[\"\^]*))[\s\v,\.-/;-<>].*|e[\"\^]*r[\"\^]*r|p[\"\^]*(?:(?:s[\"\^]*)?[\s\v,\.-/;-<>].*|v))|l[\"\^]*s|n[\"\^]*(?:(?:a[\"\^]*l|d[\"\^]*r|[iv]|m[\"\^]*o|s[\"\^]*n)[\"\^]*[\s\v,\.-/;-<>].*|p[\"\^]*s[\"\^]*s[\"\^]*c)|r[\"\^]*(?:(?:(?:(?:b[\"\^]*)?p|e[\"\^]*n|(?:w[\"\^]*m[\"\^]*)?i|j[\"\^]*b|n[\"\^]*[ip])[\"\^]*|d[\"\^]*(?:r[\"\^]*)?|m[\"\^]*(?:(?:d[\"\^]*i[\"\^]*r|o)[\"\^]*)?|s[\"\^]*n[\"\^]*(?:p[\"\^]*)?|v[\"\^]*(?:p[\"\^]*a[\"\^]*)?)[\s\v,\.-/;-<>].*|c[\"\^]*(?:j[\"\^]*b[\"\^]*[\s\v,\.-/;-<>].*|s[\"\^]*n)|u[\"\^]*j[\"\^]*b)|s[\"\^]*(?:(?:(?:a[\"\^]*(?:j[\"\^]*b|l|p[\"\^]*s|s[\"\^]*v)|b[\"\^]*p|[civ]|w[\"\^]*m[\"\^]*i)[\"\^]*|l[\"\^]*(?:s[\"\^]*)?|p[\"\^]*(?:(?:j[\"\^]*b|p[\"\^]*s|s[\"\^]*v)[\"\^]*)?)[\s\v,\.-/;-<>].*|h[\"\^]*c[\"\^]*m|u[\"\^]*j[\"\^]*b))(?:\.[\"\^]*[0-9A-Z_a-z]+)?\b" \ "id:932125,\ phase:2,\ block,\