FKIE_CVE-2011-0721
Vulnerability from fkie_nvd - Published: 2011-02-19 01:00 - Updated: 2026-06-16 23:27
Severity
Summary
Multiple CRLF injection vulnerabilities in (1) chfn and (2) chsh in shadow 1:4.1.4 allow local users to add new users or groups to /etc/passwd via the GECOS field.
References
{
"affected": [
{
"affectedData": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"source": "security@ubuntu.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:debian:shadow:1\\:4.1.4:*:*:*:*:*:*:*",
"matchCriteriaId": "021D4066-989E-4B2C-93B2-65748E24E257",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Multiple CRLF injection vulnerabilities in (1) chfn and (2) chsh in shadow 1:4.1.4 allow local users to add new users or groups to /etc/passwd via the GECOS field."
},
{
"lang": "es",
"value": "M\u00faltiples vulnerabilidades de inyecci\u00f3n CRLF en (1) chfn y (2) chsh sobre shadow 1:4.1.4 permiten agregar nuevos usuarios o grupos a /etc/passwd a los usuarios locales a trav\u00e9s del campo GECOS."
}
],
"id": "CVE-2011-0721",
"lastModified": "2026-06-16T23:27:56.927",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 6.4,
"confidentialityImpact": "NONE",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 4.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2011-02-19T01:00:03.353",
"references": [
{
"source": "security@ubuntu.com",
"url": "http://osvdb.org/70895"
},
{
"source": "security@ubuntu.com",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/42505"
},
{
"source": "security@ubuntu.com",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/43345"
},
{
"source": "security@ubuntu.com",
"url": "http://slackware.com/security/viewer.php?l=slackware-security\u0026y=2011\u0026m=slackware-security.380014"
},
{
"source": "security@ubuntu.com",
"url": "http://www.debian.org/security/2011/dsa-2164"
},
{
"source": "security@ubuntu.com",
"url": "http://www.securityfocus.com/bid/46426"
},
{
"source": "security@ubuntu.com",
"url": "http://www.ubuntu.com/usn/USN-1065-1"
},
{
"source": "security@ubuntu.com",
"tags": [
"Vendor Advisory"
],
"url": "http://www.vupen.com/english/advisories/2011/0396"
},
{
"source": "security@ubuntu.com",
"tags": [
"Vendor Advisory"
],
"url": "http://www.vupen.com/english/advisories/2011/0398"
},
{
"source": "security@ubuntu.com",
"url": "http://www.vupen.com/english/advisories/2011/0773"
},
{
"source": "security@ubuntu.com",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/65564"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://osvdb.org/70895"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/42505"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/43345"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://slackware.com/security/viewer.php?l=slackware-security\u0026y=2011\u0026m=slackware-security.380014"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.debian.org/security/2011/dsa-2164"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/bid/46426"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.ubuntu.com/usn/USN-1065-1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://www.vupen.com/english/advisories/2011/0396"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://www.vupen.com/english/advisories/2011/0398"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.vupen.com/english/advisories/2011/0773"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/65564"
}
],
"sourceIdentifier": "security@ubuntu.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-20"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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