virtualenv writes prompt values into pyvenv.cfg without sanitizing line boundaries, allowing configuration injection
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| pypa | virtualenv | affected |
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| Source | ID | Title |
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Github GHSA |
GHSA-9h9j-4vrj-gf7g | virtualenv writes prompt values into pyvenv.cfg without sanitizing line boundaries, allowing configuration injection |
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.146% probability within 30 days)
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threat_severity
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cvssV3_1
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| First Time appeared |
Pypa
Pypa virtualenv Python Python virtualenv |
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Pypa
Pypa virtualenv Python Python virtualenv |
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ssvc
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| Description | virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.11, PyEnvCfg.write() writes prompt values verbatim to the line-oriented pyvenv.cfg format while PyEnvCfg._read_values() parses the file with str.splitlines() and accepts the last value for duplicate keys. An attacker who influences --prompt, VIRTUALENV_PROMPT, or configuration input can insert a recognized line boundary and additional keys, including home, causing consumers to use an attacker-selected base interpreter or corrupted environment metadata. The security impact requires prompt input from outside the operator's trust boundary; directly supplied prompt content primarily corrupts the operator's own environment. This issue is fixed in version 21.7.11. | |
| Title | virtualenv writes prompt values into pyvenv.cfg without sanitizing line boundaries, allowing configuration injection | |
| Weaknesses | CWE-93 | |
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cvssV4_0
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