GHSA-j667-c2hm-f2wp CVE-2020-14332 PYSEC-2020-4
Insertion of Sensitive Information into Log File and Improper Output Neutralization for Logs in ansible
Medium
PyPI
- Severity
- 0.0 / 10
- Medium · CVSS 4.0
- Exploit chance (EPSS)
- 0.41%
- Chance of exploitation in the next 30 days. Higher than 35.28% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-117 Improper Output Neutralization for Logs
- CWE-532 Insertion of Sensitive Information into Log File
- Fix
2.8.14- Upgrade ansible to this version or later
Description
A flaw was found in the Ansible Engine when using module_args. Tasks executed with check mode (--check-mode) do not properly neutralize sensitive data exposed in the event data. This flaw allows unauthorized users to read this data. The highest threat from this vulnerability is to confidentiality.
Affected versions
PyPI
| Package | Vulnerable | Fixed in |
|---|---|---|
| ansible | < 2.8.14 |
2.8.14 |
| ansible | >= 2.9.0a1, < 2.9.12 |
2.9.12 |
| ansible | >= 2.10.0a1, < 2.10.1rc2 |
2.10.1rc2 |
| ansible | >= 2.8.0, < 2.8.14>= 2.9.0, < 2.9.12 |
2.8.142.9.12 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
ansible PyPI → 2.8.14
- pip
pip install --upgrade "ansible>=2.8.14"- poetry
poetry add "ansible>=2.8.14"- uv
uv add "ansible>=2.8.14"
Severity breakdown
CVSS 4.0 0.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- Attack vector
- Local
- Attack complexity
- Low
- Attack requirements
- None
- Privileges required
- Low
- User interaction
- None
- Confidentiality (vulnerable system)
- High
- Integrity (vulnerable system)
- None
- Availability (vulnerable system)
- None
- Confidentiality (subsequent systems)
- None
- Integrity (subsequent systems)
- None
- Availability (subsequent systems)
- None
CVSS 3.0 5.5
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Weakness
CWE-117: Improper Output Neutralization for Logs
The product constructs a log message from external input, but it does not neutralize or incorrectly neutralizes special elements when the message is written to a log file.
How to prevent it
- Implementation: Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does. When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue." Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
- Implementation: Use and specify an output encoding that can be handled by the downstream component that is reading the output. Common encodings include ISO-8859-1, UTF-7, and UTF-8. When an encoding is not specified, a downstream component may choose a different encoding, either by assuming a default encoding or automatically inferring which encoding is being used, which can be erroneous. When the encodings are inconsistent, the downstream component might treat some character or byte sequences as special, even if they are not special in the original encoding. Attackers might then be able to exploit this discrepancy and conduct injection attacks; they even might be able to bypass protection mechanisms that assume the original encoding is also being used by the downstream component.
- Implementation: Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass allowlist validation schemes by introducing dangerous inputs after they have been checked.
CWE-532: Insertion of Sensitive Information into Log File
The product writes sensitive information to a log file.
How to prevent it
- Architecture and Design, Implementation: Consider seriously the sensitivity of the information written into log files. Do not write secrets into the log files.
- Distribution: Remove debug log files before deploying the application into production.
- Operation: Protect log files against unauthorized read/write.
- Implementation: Adjust configurations appropriately when software is transitioned from a debug state to production.
References
Advisories
Packages
Other links
- github.com/ansible/ansible/pull/71033
- github.com/ansible/ansible/commit/291f94934c8c49eef85e6539087f2dfcd001fe4f
- github.com/ansible/ansible/commit/6cae9a4b168df776bf82deb04b2c62e00c38b49a
- github.com/ansible/ansible/commit/714cd2ad2eff7f003d728414afcb91591fad5d9a
- bugzilla.redhat.com/show_bug.cgi
- github.com/ansible/ansible/blob/stable-2.10/changelogs/CHANGELOG-v2.10.rst
- github.com/ansible/ansible/blob/stable-2.8/changelogs/CHANGELOG-v2.8.rst
- github.com/ansible/ansible/blob/stable-2.9/changelogs/CHANGELOG-v2.9.rst
- github.com/pypa/advisory-database/tree/main/vulns/ansible/PYSEC-2020-4.yaml
- debian.org/security/2021/dsa-4950
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-8ggh-xwr9-3373 Ansible Community General Collection is vulnerable to exposure of sensitive information | Medium | Also affects ansible |
| GHSA-jpvw-p8pr-9g2x Ansible symlink attack vulnerability | Medium | Also affects ansible |
| GHSA-cpx3-93w7-457x Ansible leaks password to logs | High | Also affects ansible |
| GHSA-fh5v-5f35-2rv2 Insertion of Sensitive Information into Log File in ansible | Medium | Also affects ansible |
| GHSA-4r65-35qq-ch8j Ansible discloses sensitive information in traceback error message | Medium | Also affects ansible |
| GHSA-2pfh-q76x-gwvm Improper Input Validation and Command Injection in Ansible | High | Also affects ansible |
| PYSEC-2021-126 A flaw was found in Ansible if an ansible user sets ANSIBLE_ASYNC_DIR to a subdirectory of a world writable directory. | Not rated yet | Also affects ansible |
| GHSA-r6h7-5pq2-j77h Insufficiently random values in Ansible | Medium | Also affects ansible |
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