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Actions: Improve bash support #18540

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4 changes: 4 additions & 0 deletions actions/ql/lib/change-notes/2025-01-20-bash.md
Original file line number Diff line number Diff line change
@@ -0,0 +1,4 @@
---
category: fix
---
* Improved `untrustedGhCommandDataModel` regex for `gh pr view` and Bash taint analysis in GitHub Actions.
14 changes: 14 additions & 0 deletions actions/ql/lib/codeql/actions/Bash.qll
Original file line number Diff line number Diff line change
Expand Up @@ -695,6 +695,20 @@ module Bash {
not varMatchesRegexTest(script, var2, alphaNumericRegex())
)
or
exists(string var2, string value2, string var3, string value3 |
// VAR2=$(cmd)
// VAR3=$VAR2
// echo "FIELD=${VAR3:-default}" >> $GITHUB_ENV (field, file_write_value)
script.getAnAssignment(var2, value2) and
script.getAnAssignment(var3, value3) and
var2 != var3 and
not varMatchesRegexTest(script, var2, alphaNumericRegex()) and
not varMatchesRegexTest(script, var3, alphaNumericRegex()) and
containsCmdSubstitution(value2, cmd) and
containsParameterExpansion(value3, var2, _, _) and
containsParameterExpansion(expr, var3, _, _)
)
or
// var reaches the file write directly
// echo "FIELD=$(cmd)" >> $GITHUB_ENV (field, file_write_value)
containsCmdSubstitution(expr, cmd)
Expand Down
13 changes: 7 additions & 6 deletions actions/ql/lib/ext/config/untrusted_gh_command.yml
Original file line number Diff line number Diff line change
Expand Up @@ -7,17 +7,18 @@ extensions:
# PULL REQUESTS
#
# HEAD_REF=$(gh pr view "${{ github.event.issue.number }}" --json headRefName -q '.headRefName')
- ["gh\\s+pr\\b.*\\bview\\b.*\\.headRefName.*", "branch,oneline"]
- ["gh\\s+pr\\b.*\\bview\\b.*\\bheadRefName\\b", "branch,oneline"]
# TITLE=$(gh pr view $PR_NUMBER --json title --jq .title)
- ["gh\\s+pr\\b.*\\bview\\b.*\\.title.*", "title,oneline"]
# TITLE=$(gh pr view $PR_NUMBER --json "title")
- ["gh\\s+pr\\b.*\\bview\\b.*\\btitle\\b", "title,oneline"]
# BODY=$(gh pr view $PR_NUMBER --json body --jq .body)
- ["gh\\s+pr\\b.*\\bview\\b.*\\.body.*", "text,multiline"]
- ["gh\\s+pr\\b.*\\bview\\b.*\\bbody\\b", "text,multiline"]
# COMMENTS="$(gh pr view --repo ${{ github.repository }} "$PR_NUMBER" --json "body,comments" -q '.body, .comments[].body')"
- ["gh\\s+pr\\b.*\\bview\\b.*\\.comments.*", "text,multiline"]
- ["gh\\s+pr\\b.*\\bview\\b.*\\bcomments\\b", "text,multiline"]
# CHANGED_FILES="$(gh pr view --repo ${{ github.repository }} ${{ needs.check-comment.outputs.pull_number }} --json files --jq '.files.[].path')"
- ["gh\\s+pr\\b.*\\bview\\b.*\\.files.*", "filename,multiline"]
- ["gh\\s+pr\\b.*\\bview\\b.*\\bfiles\\b", "filename,multiline"]
# AUTHOR=$(gh pr view ${ORI_PR} -R ${REPO} --json author -q '.author.login')
- ["gh\\s+pr\\b.*\\bview\\b.*\\.author.*", "username,oneline"]
- ["gh\\s+pr\\b.*\\bview\\b.*\\bauthor\\b", "username,oneline"]
#
# ISSUES
#
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -106,7 +106,15 @@ jobs:
COMMENTS=$(gh api /repos/test/test/pulls/${PR_NUMBER}/comments --jq '.[].body')
echo "comments=$COMMENTS" >> "$GITHUB_OUTPUT"
- run: echo "${{ steps.comments.outputs.comments}}"

pulls3:
runs-on: ubuntu-latest
steps:
- id: title2
run: |
DETAILS=$(gh pr view $PR_NUMBER --json "title,author,headRefName")
TITLE=$(echo $DETAILS | jq -r '.title')
echo "title=$TITLE" >> "$GITHUB_OUTPUT"
- run: echo "${{ steps.title2.outputs.title}}"



Original file line number Diff line number Diff line change
Expand Up @@ -128,10 +128,14 @@ edges
| .github/workflows/test9.yml:12:9:20:6 | Uses Step: issue_body_parser_request | .github/workflows/test9.yml:10:17:10:70 | steps.issue_body_parser_request.outputs.payload | provenance | |
| .github/workflows/test9.yml:12:9:20:6 | Uses Step: issue_body_parser_request | .github/workflows/test9.yml:20:20:20:73 | steps.issue_body_parser_request.outputs.payload | provenance | |
| .github/workflows/test11.yml:19:7:21:4 | Job outputs node [pr_num] | .github/workflows/test11.yml:54:20:54:60 | needs.get-artifacts.outputs.pr_num | provenance | |
| .github/workflows/test11.yml:19:7:21:4 | Job outputs node [ref] | .github/workflows/test11.yml:55:20:55:57 | needs.get-artifacts.outputs.ref | provenance | |
| .github/workflows/test11.yml:19:16:19:50 | steps.set-ref.outputs.pr_num | .github/workflows/test11.yml:19:7:21:4 | Job outputs node [pr_num] | provenance | |
| .github/workflows/test11.yml:20:13:20:44 | steps.set-ref.outputs.ref | .github/workflows/test11.yml:19:7:21:4 | Job outputs node [ref] | provenance | |
| .github/workflows/test11.yml:22:9:30:6 | Uses Step | .github/workflows/test11.yml:32:14:44:44 | pr_num=$(jq -r '.pull_request.number' artifacts/event_file/event.json)\nif [ -z "$pr_num" ] \|\| [ "$pr_num" == "null" ]; then\n pr_num=""\nfi\n\nref=$pr_num\nif [ -z "$ref" ] \|\| [ "$ref" == "null" ]; then\n ref=${{ github.ref }}\nfi\n\necho "pr_num=$pr_num" >> $GITHUB_OUTPUT\necho "ref=$ref" >> $GITHUB_OUTPUT\n | provenance | Config |
| .github/workflows/test11.yml:30:9:46:2 | Run Step: set-ref [pr_num] | .github/workflows/test11.yml:19:16:19:50 | steps.set-ref.outputs.pr_num | provenance | |
| .github/workflows/test11.yml:30:9:46:2 | Run Step: set-ref [ref] | .github/workflows/test11.yml:20:13:20:44 | steps.set-ref.outputs.ref | provenance | |
| .github/workflows/test11.yml:32:14:44:44 | pr_num=$(jq -r '.pull_request.number' artifacts/event_file/event.json)\nif [ -z "$pr_num" ] \|\| [ "$pr_num" == "null" ]; then\n pr_num=""\nfi\n\nref=$pr_num\nif [ -z "$ref" ] \|\| [ "$ref" == "null" ]; then\n ref=${{ github.ref }}\nfi\n\necho "pr_num=$pr_num" >> $GITHUB_OUTPUT\necho "ref=$ref" >> $GITHUB_OUTPUT\n | .github/workflows/test11.yml:30:9:46:2 | Run Step: set-ref [pr_num] | provenance | |
| .github/workflows/test11.yml:32:14:44:44 | pr_num=$(jq -r '.pull_request.number' artifacts/event_file/event.json)\nif [ -z "$pr_num" ] \|\| [ "$pr_num" == "null" ]; then\n pr_num=""\nfi\n\nref=$pr_num\nif [ -z "$ref" ] \|\| [ "$ref" == "null" ]; then\n ref=${{ github.ref }}\nfi\n\necho "pr_num=$pr_num" >> $GITHUB_OUTPUT\necho "ref=$ref" >> $GITHUB_OUTPUT\n | .github/workflows/test11.yml:30:9:46:2 | Run Step: set-ref [ref] | provenance | |
| .github/workflows/test14.yml:13:9:16:6 | Run Step: changed-files [files] | .github/workflows/test14.yml:16:21:16:60 | steps.changed-files.outputs.files | provenance | |
| .github/workflows/test14.yml:14:14:15:117 | echo "files=$(git diff-tree --no-commit-id --name-only -r ${{ github.sha }} -- docs/)" >> "$GITHUB_OUTPUT"\n | .github/workflows/test14.yml:13:9:16:6 | Run Step: changed-files [files] | provenance | |
| .github/workflows/test14.yml:23:9:27:6 | Run Step: changed-files [files] | .github/workflows/test14.yml:27:21:27:60 | steps.changed-files.outputs.files | provenance | |
Expand Down Expand Up @@ -199,6 +203,8 @@ edges
| .github/workflows/test19.yml:100:14:102:48 | BODY=$(gh api /repos/test/test/issues/${{PR_NUMBER}} --jq ".body")\necho "body=$BODY" >> "$GITHUB_OUTPUT"\n | .github/workflows/test19.yml:99:9:103:6 | Run Step: body [body] | provenance | |
| .github/workflows/test19.yml:104:9:108:6 | Run Step: comments [comments] | .github/workflows/test19.yml:108:21:108:57 | steps.comments.outputs.comments | provenance | |
| .github/workflows/test19.yml:105:14:107:56 | COMMENTS=$(gh api /repos/test/test/pulls/${PR_NUMBER}/comments --jq '.[].body')\necho "comments=$COMMENTS" >> "$GITHUB_OUTPUT"\n | .github/workflows/test19.yml:104:9:108:6 | Run Step: comments [comments] | provenance | |
| .github/workflows/test19.yml:112:9:117:6 | Run Step: title2 [title] | .github/workflows/test19.yml:117:21:117:52 | steps.title2.outputs.title | provenance | |
| .github/workflows/test19.yml:113:14:116:50 | DETAILS=$(gh pr view $PR_NUMBER --json "title,author,headRefName")\nTITLE=$(echo $DETAILS \| jq -r '.title')\necho "title=$TITLE" >> "$GITHUB_OUTPUT"\n | .github/workflows/test19.yml:112:9:117:6 | Run Step: title2 [title] | provenance | |
| .github/workflows/test24.yml:8:9:17:6 | Uses Step: parse | .github/workflows/test24.yml:19:17:19:50 | steps.parse.outputs.payload | provenance | |
| .github/workflows/test25.yml:9:9:12:6 | Uses Step: parse | .github/workflows/test25.yml:12:20:12:50 | steps.parse.outputs.data | provenance | |
| .github/workflows/test25.yml:9:9:12:6 | Uses Step: parse | .github/workflows/test25.yml:13:20:13:58 | toJSON(steps.parse.outputs.data) | provenance | |
Expand Down Expand Up @@ -495,11 +501,15 @@ nodes
| .github/workflows/test10.yml:423:34:423:77 | github.event.workflow_run.head_branch | semmle.label | github.event.workflow_run.head_branch |
| .github/workflows/test10.yml:518:34:518:77 | github.event.workflow_run.head_branch | semmle.label | github.event.workflow_run.head_branch |
| .github/workflows/test11.yml:19:7:21:4 | Job outputs node [pr_num] | semmle.label | Job outputs node [pr_num] |
| .github/workflows/test11.yml:19:7:21:4 | Job outputs node [ref] | semmle.label | Job outputs node [ref] |
| .github/workflows/test11.yml:19:16:19:50 | steps.set-ref.outputs.pr_num | semmle.label | steps.set-ref.outputs.pr_num |
| .github/workflows/test11.yml:20:13:20:44 | steps.set-ref.outputs.ref | semmle.label | steps.set-ref.outputs.ref |
| .github/workflows/test11.yml:22:9:30:6 | Uses Step | semmle.label | Uses Step |
| .github/workflows/test11.yml:30:9:46:2 | Run Step: set-ref [pr_num] | semmle.label | Run Step: set-ref [pr_num] |
| .github/workflows/test11.yml:30:9:46:2 | Run Step: set-ref [ref] | semmle.label | Run Step: set-ref [ref] |
| .github/workflows/test11.yml:32:14:44:44 | pr_num=$(jq -r '.pull_request.number' artifacts/event_file/event.json)\nif [ -z "$pr_num" ] \|\| [ "$pr_num" == "null" ]; then\n pr_num=""\nfi\n\nref=$pr_num\nif [ -z "$ref" ] \|\| [ "$ref" == "null" ]; then\n ref=${{ github.ref }}\nfi\n\necho "pr_num=$pr_num" >> $GITHUB_OUTPUT\necho "ref=$ref" >> $GITHUB_OUTPUT\n | semmle.label | pr_num=$(jq -r '.pull_request.number' artifacts/event_file/event.json)\nif [ -z "$pr_num" ] \|\| [ "$pr_num" == "null" ]; then\n pr_num=""\nfi\n\nref=$pr_num\nif [ -z "$ref" ] \|\| [ "$ref" == "null" ]; then\n ref=${{ github.ref }}\nfi\n\necho "pr_num=$pr_num" >> $GITHUB_OUTPUT\necho "ref=$ref" >> $GITHUB_OUTPUT\n |
| .github/workflows/test11.yml:54:20:54:60 | needs.get-artifacts.outputs.pr_num | semmle.label | needs.get-artifacts.outputs.pr_num |
| .github/workflows/test11.yml:55:20:55:57 | needs.get-artifacts.outputs.ref | semmle.label | needs.get-artifacts.outputs.ref |
| .github/workflows/test12.yml:10:21:10:67 | github.event.pull_request.title \|\| "foo" | semmle.label | github.event.pull_request.title \|\| "foo" |
| .github/workflows/test13.yml:10:21:10:57 | github.event.changes.body.from | semmle.label | github.event.changes.body.from |
| .github/workflows/test13.yml:11:21:11:58 | github.event.changes.title.from | semmle.label | github.event.changes.title.from |
Expand Down Expand Up @@ -606,6 +616,9 @@ nodes
| .github/workflows/test19.yml:104:9:108:6 | Run Step: comments [comments] | semmle.label | Run Step: comments [comments] |
| .github/workflows/test19.yml:105:14:107:56 | COMMENTS=$(gh api /repos/test/test/pulls/${PR_NUMBER}/comments --jq '.[].body')\necho "comments=$COMMENTS" >> "$GITHUB_OUTPUT"\n | semmle.label | COMMENTS=$(gh api /repos/test/test/pulls/${PR_NUMBER}/comments --jq '.[].body')\necho "comments=$COMMENTS" >> "$GITHUB_OUTPUT"\n |
| .github/workflows/test19.yml:108:21:108:57 | steps.comments.outputs.comments | semmle.label | steps.comments.outputs.comments |
| .github/workflows/test19.yml:112:9:117:6 | Run Step: title2 [title] | semmle.label | Run Step: title2 [title] |
| .github/workflows/test19.yml:113:14:116:50 | DETAILS=$(gh pr view $PR_NUMBER --json "title,author,headRefName")\nTITLE=$(echo $DETAILS \| jq -r '.title')\necho "title=$TITLE" >> "$GITHUB_OUTPUT"\n | semmle.label | DETAILS=$(gh pr view $PR_NUMBER --json "title,author,headRefName")\nTITLE=$(echo $DETAILS \| jq -r '.title')\necho "title=$TITLE" >> "$GITHUB_OUTPUT"\n |
| .github/workflows/test19.yml:117:21:117:52 | steps.title2.outputs.title | semmle.label | steps.title2.outputs.title |
| .github/workflows/test21.yml:22:35:22:73 | github.event.head_commit.message | semmle.label | github.event.head_commit.message |
| .github/workflows/test21.yml:23:36:23:74 | github.event.head_commit.message | semmle.label | github.event.head_commit.message |
| .github/workflows/test21.yml:24:50:24:88 | github.event.head_commit.message | semmle.label | github.event.head_commit.message |
Expand Down Expand Up @@ -767,6 +780,7 @@ subpaths
| .github/workflows/test9.yml:31:42:31:99 | fromJson(needs.parse-issue.outputs.payload).version | .github/workflows/test9.yml:12:9:20:6 | Uses Step: issue_body_parser_request | .github/workflows/test9.yml:31:42:31:99 | fromJson(needs.parse-issue.outputs.payload).version | Potential code injection in $@, which may be controlled by an external user ($@). | .github/workflows/test9.yml:31:42:31:99 | fromJson(needs.parse-issue.outputs.payload).version | ${{ fromJson(needs.parse-issue.outputs.payload).version }} | .github/workflows/test9.yml:4:3:4:15 | issue_comment | issue_comment |
| .github/workflows/test9.yml:39:42:39:72 | github.event.issue.title | .github/workflows/test9.yml:39:42:39:72 | github.event.issue.title | .github/workflows/test9.yml:39:42:39:72 | github.event.issue.title | Potential code injection in $@, which may be controlled by an external user ($@). | .github/workflows/test9.yml:39:42:39:72 | github.event.issue.title | ${{ github.event.issue.title }} | .github/workflows/test9.yml:4:3:4:15 | issue_comment | issue_comment |
| .github/workflows/test11.yml:54:20:54:60 | needs.get-artifacts.outputs.pr_num | .github/workflows/test11.yml:22:9:30:6 | Uses Step | .github/workflows/test11.yml:54:20:54:60 | needs.get-artifacts.outputs.pr_num | Potential code injection in $@, which may be controlled by an external user ($@). | .github/workflows/test11.yml:54:20:54:60 | needs.get-artifacts.outputs.pr_num | ${{ needs.get-artifacts.outputs.pr_num }} | .github/workflows/test11.yml:4:3:4:14 | workflow_run | workflow_run |
| .github/workflows/test11.yml:55:20:55:57 | needs.get-artifacts.outputs.ref | .github/workflows/test11.yml:22:9:30:6 | Uses Step | .github/workflows/test11.yml:55:20:55:57 | needs.get-artifacts.outputs.ref | Potential code injection in $@, which may be controlled by an external user ($@). | .github/workflows/test11.yml:55:20:55:57 | needs.get-artifacts.outputs.ref | ${{ needs.get-artifacts.outputs.ref }} | .github/workflows/test11.yml:4:3:4:14 | workflow_run | workflow_run |
| .github/workflows/test12.yml:10:21:10:67 | github.event.pull_request.title \|\| "foo" | .github/workflows/test12.yml:10:21:10:67 | github.event.pull_request.title \|\| "foo" | .github/workflows/test12.yml:10:21:10:67 | github.event.pull_request.title \|\| "foo" | Potential code injection in $@, which may be controlled by an external user ($@). | .github/workflows/test12.yml:10:21:10:67 | github.event.pull_request.title \|\| "foo" | ${{ github.event.pull_request.title \|\| "foo" }} | .github/workflows/test12.yml:4:3:4:21 | pull_request_target | pull_request_target |
| .github/workflows/test13.yml:10:21:10:57 | github.event.changes.body.from | .github/workflows/test13.yml:10:21:10:57 | github.event.changes.body.from | .github/workflows/test13.yml:10:21:10:57 | github.event.changes.body.from | Potential code injection in $@, which may be controlled by an external user ($@). | .github/workflows/test13.yml:10:21:10:57 | github.event.changes.body.from | ${{ github.event.changes.body.from }} | .github/workflows/test13.yml:4:3:4:21 | pull_request_target | pull_request_target |
| .github/workflows/test13.yml:11:21:11:58 | github.event.changes.title.from | .github/workflows/test13.yml:11:21:11:58 | github.event.changes.title.from | .github/workflows/test13.yml:11:21:11:58 | github.event.changes.title.from | Potential code injection in $@, which may be controlled by an external user ($@). | .github/workflows/test13.yml:11:21:11:58 | github.event.changes.title.from | ${{ github.event.changes.title.from }} | .github/workflows/test13.yml:4:3:4:21 | pull_request_target | pull_request_target |
Expand Down Expand Up @@ -807,6 +821,7 @@ subpaths
| .github/workflows/test19.yml:98:21:98:51 | steps.title.outputs.title | .github/workflows/test19.yml:95:14:97:50 | TITLE=$(gh api /repos/test/test/issues/${{PR_NUMBER}} --jq ".title")\necho "title=$TITLE" >> "$GITHUB_OUTPUT"\n | .github/workflows/test19.yml:98:21:98:51 | steps.title.outputs.title | Potential code injection in $@, which may be controlled by an external user ($@). | .github/workflows/test19.yml:98:21:98:51 | steps.title.outputs.title | ${{ steps.title.outputs.title}} | .github/workflows/test19.yml:4:3:4:21 | pull_request_target | pull_request_target |
| .github/workflows/test19.yml:103:21:103:49 | steps.body.outputs.body | .github/workflows/test19.yml:100:14:102:48 | BODY=$(gh api /repos/test/test/issues/${{PR_NUMBER}} --jq ".body")\necho "body=$BODY" >> "$GITHUB_OUTPUT"\n | .github/workflows/test19.yml:103:21:103:49 | steps.body.outputs.body | Potential code injection in $@, which may be controlled by an external user ($@). | .github/workflows/test19.yml:103:21:103:49 | steps.body.outputs.body | ${{ steps.body.outputs.body}} | .github/workflows/test19.yml:4:3:4:21 | pull_request_target | pull_request_target |
| .github/workflows/test19.yml:108:21:108:57 | steps.comments.outputs.comments | .github/workflows/test19.yml:105:14:107:56 | COMMENTS=$(gh api /repos/test/test/pulls/${PR_NUMBER}/comments --jq '.[].body')\necho "comments=$COMMENTS" >> "$GITHUB_OUTPUT"\n | .github/workflows/test19.yml:108:21:108:57 | steps.comments.outputs.comments | Potential code injection in $@, which may be controlled by an external user ($@). | .github/workflows/test19.yml:108:21:108:57 | steps.comments.outputs.comments | ${{ steps.comments.outputs.comments}} | .github/workflows/test19.yml:4:3:4:21 | pull_request_target | pull_request_target |
| .github/workflows/test19.yml:117:21:117:52 | steps.title2.outputs.title | .github/workflows/test19.yml:113:14:116:50 | DETAILS=$(gh pr view $PR_NUMBER --json "title,author,headRefName")\nTITLE=$(echo $DETAILS \| jq -r '.title')\necho "title=$TITLE" >> "$GITHUB_OUTPUT"\n | .github/workflows/test19.yml:117:21:117:52 | steps.title2.outputs.title | Potential code injection in $@, which may be controlled by an external user ($@). | .github/workflows/test19.yml:117:21:117:52 | steps.title2.outputs.title | ${{ steps.title2.outputs.title}} | .github/workflows/test19.yml:4:3:4:21 | pull_request_target | pull_request_target |
| .github/workflows/test24.yml:19:17:19:50 | steps.parse.outputs.payload | .github/workflows/test24.yml:8:9:17:6 | Uses Step: parse | .github/workflows/test24.yml:19:17:19:50 | steps.parse.outputs.payload | Potential code injection in $@, which may be controlled by an external user ($@). | .github/workflows/test24.yml:19:17:19:50 | steps.parse.outputs.payload | ${{ steps.parse.outputs.payload }} | .github/workflows/test24.yml:2:3:2:8 | issues | issues |
| .github/workflows/test25.yml:12:20:12:50 | steps.parse.outputs.data | .github/workflows/test25.yml:9:9:12:6 | Uses Step: parse | .github/workflows/test25.yml:12:20:12:50 | steps.parse.outputs.data | Potential code injection in $@, which may be controlled by an external user ($@). | .github/workflows/test25.yml:12:20:12:50 | steps.parse.outputs.data | ${{ steps.parse.outputs.data }} | .github/workflows/test25.yml:3:5:3:10 | issues | issues |
| .github/workflows/test25.yml:13:20:13:58 | toJSON(steps.parse.outputs.data) | .github/workflows/test25.yml:9:9:12:6 | Uses Step: parse | .github/workflows/test25.yml:13:20:13:58 | toJSON(steps.parse.outputs.data) | Potential code injection in $@, which may be controlled by an external user ($@). | .github/workflows/test25.yml:13:20:13:58 | toJSON(steps.parse.outputs.data) | ${{ toJSON(steps.parse.outputs.data) }} | .github/workflows/test25.yml:3:5:3:10 | issues | issues |
Expand Down
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