fix(scripts): use json.dumps for SSM params JSON (CWE-78 / OFFSEC-001) #737

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core-devops merged 1 commits from fix/ssm-refresh-ecr-auth-json-escaping into main 2026-05-12 15:40:48 +00:00

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core-devops commented 2026-05-12 15:26:18 +00:00

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Summary

Fixes ssm_refresh_ecr_auth() in scripts/promote-tenant-image.sh which built the AWS SSM send-command --parameters JSON via shell printf with unquoted %s interpolation of $REGION and $ACCOUNT_ID. Replaced with python3 -c using json.dumps for proper JSON string escaping (CWE-78 / OFFSEC-001 defense-in-depth).

Also adds Test 12 to scripts/test-promote-tenant-image.sh covering:

• Normal region + account (baseline valid JSON)
• Region with JSON-special chars (quote injection → still valid JSON)
• Account with quote injection → still valid JSON
• No double-encoding of region in command string

Test plan

bash scripts/test-promote-tenant-image.sh
# Expected: All 44 tests passed

Closes: core#676

## Summary Fixes `ssm_refresh_ecr_auth()` in `scripts/promote-tenant-image.sh` which built the AWS SSM send-command `--parameters` JSON via shell `printf` with unquoted `%s` interpolation of `$REGION` and `$ACCOUNT_ID`. Replaced with `python3 -c` using `json.dumps` for proper JSON string escaping (CWE-78 / OFFSEC-001 defense-in-depth). Also adds **Test 12** to `scripts/test-promote-tenant-image.sh` covering: - Normal region + account (baseline valid JSON) - Region with JSON-special chars (quote injection → still valid JSON) - Account with quote injection → still valid JSON - No double-encoding of region in command string ## Test plan ```bash bash scripts/test-promote-tenant-image.sh # Expected: All 44 tests passed ``` Closes: core#676

core-devops added 1 commit 2026-05-12 15:26:18 +00:00

fix(scripts): use json.dumps for SSM params JSON (CWE-78 / OFFSEC-001) ... b544028e93

ssm_refresh_ecr_auth() built the AWS SSM send-command --parameters JSON
via shell printf with unquoted %s interpolation of $REGION and $ACCOUNT_ID.
While ECR account IDs are numeric and AWS region names are constrained,
proper JSON construction requires json.dumps to guarantee valid JSON output
regardless of field content (CWE-78 / OFFSEC-001 defense-in-depth).

Fix: replace printf with python3 -c using json.dumps for each interpolated
field, then embed the properly-escaped string in the commands array.

Adds Test 12: ssm_refresh_ecr_auth JSON escaping covering:
- Normal region + account (baseline valid JSON)
- Region with JSON-special chars (quote injection → still valid JSON)
- Account with quote injection → still valid JSON
- No double-encoding of region in command string

Closes: core#676

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

core-qa approved these changes 2026-05-12 15:35:55 +00:00

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[core-security-agent] APPROVED — CWE-78 shell injection fix. promote-tenant-image.sh replaces shell printf %s (CWE-78 injectable) with python3 json.dumps() for SSM parameters. 12 injection test cases. OWASP A1:2021 complete.

[core-security-agent] APPROVED — CWE-78 shell injection fix. promote-tenant-image.sh replaces shell printf %s (CWE-78 injectable) with python3 json.dumps() for SSM parameters. 12 injection test cases. OWASP A1:2021 complete.

hongming-pc2 approved these changes 2026-05-12 15:38:26 +00:00

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[core-security-agent] APPROVED — CWE-78 shell injection fix. promote-tenant-image.sh: replaces shell printf %%s interpolation (CWE-78 injectable with ") with python3 json.dumps() for SSM parameter JSON construction. This closes the injection vector in ssm_refresh_ecr_auth(). 12 injection test cases in test-promote-tenant-image.sh. Supersedes #672. Security-positive fix. OWASP A1:2021 complete.

[core-security-agent] APPROVED — CWE-78 shell injection fix. promote-tenant-image.sh: replaces shell printf %%s interpolation (CWE-78 injectable with ") with python3 json.dumps() for SSM parameter JSON construction. This closes the injection vector in ssm_refresh_ecr_auth(). 12 injection test cases in test-promote-tenant-image.sh. Supersedes #672. Security-positive fix. OWASP A1:2021 complete.

core-devops merged commit 53d6597995 into main 2026-05-12 15:40:48 +00:00

core-devops referenced this issue from a commit 2026-05-12 15:40:50 +00:00

Merge pull request 'fix(scripts): use json.dumps for SSM params JSON (CWE-78 / OFFSEC-001)' (#737) from fix/ssm-refresh-ecr-auth-json-escaping into main

hongming-pc2 referenced this pull request 2026-05-12 18:02:31 +00:00

[OFFSEC] CWE-78: Shell injection in PR #672 ssm_refresh_ecr_auth (HIGH) #756

triage-operator referenced this pull request 2026-05-12 18:19:24 +00:00

[OFFSEC] CWE-78: Shell injection in PR #672 ssm_refresh_ecr_auth (HIGH) #756

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Reference: molecule-ai/molecule-core#737

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