FKIE_CVE-2016-0755
Vulnerability from fkie_nvd - Published: 2016-01-29 20:59 - Updated: 2026-06-17 00:38
Severity
Summary
The ConnectionExists function in lib/url.c in libcurl before 7.47.0 does not properly re-use NTLM-authenticated proxy connections, which might allow remote attackers to authenticate as other users via a request, a similar issue to CVE-2014-0015.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| haxx | curl | * | |
| canonical | ubuntu_linux | 12.04 | |
| canonical | ubuntu_linux | 14.04 | |
| canonical | ubuntu_linux | 15.04 | |
| canonical | ubuntu_linux | 15.10 | |
| debian | debian_linux | 7.0 |
{
"affected": [
{
"affectedData": [
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"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"source": "secalert@redhat.com"
}
],
"configurations": [
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"versionEndIncluding": "7.46.0",
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The ConnectionExists function in lib/url.c in libcurl before 7.47.0 does not properly re-use NTLM-authenticated proxy connections, which might allow remote attackers to authenticate as other users via a request, a similar issue to CVE-2014-0015."
},
{
"lang": "es",
"value": "La funci\u00f3n ConnectionExists en lib/url.c en libcurl en versiones anteriores a 7.47.0 no reutiliza correctamente las conexiones proxy autenticadas por NTML, lo que podr\u00eda permitir a atacantes remotos autenticarse como otros usuarios a trav\u00e9s de una petici\u00f3n, un problema similar a CVE-2014-0015."
}
],
"id": "CVE-2016-0755",
"lastModified": "2026-06-17T00:38:09.573",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary"
}
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"cvssMetricV30": [
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"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 7.3,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"version": "3.0"
},
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"impactScore": 3.4,
"source": "nvd@nist.gov",
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}
]
},
"published": "2016-01-29T20:59:05.653",
"references": [
{
"source": "secalert@redhat.com",
"tags": [
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],
"url": "http://curl.haxx.se/docs/adv_20160127A.html"
},
{
"source": "secalert@redhat.com",
"url": "http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html"
},
{
"source": "secalert@redhat.com",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176546.html"
},
{
"source": "secalert@redhat.com",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177342.html"
},
{
"source": "secalert@redhat.com",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177383.html"
},
{
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"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176413.html"
},
{
"source": "secalert@redhat.com",
"url": "http://lists.opensuse.org/opensuse-updates/2016-02/msg00031.html"
},
{
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"url": "http://lists.opensuse.org/opensuse-updates/2016-02/msg00044.html"
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"url": "http://lists.opensuse.org/opensuse-updates/2016-02/msg00047.html"
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{
"source": "secalert@redhat.com",
"url": "http://packetstormsecurity.com/files/135695/Slackware-Security-Advisory-curl-Updates.html"
},
{
"source": "secalert@redhat.com",
"url": "http://www.debian.org/security/2016/dsa-3455"
},
{
"source": "secalert@redhat.com",
"url": "http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html"
},
{
"source": "secalert@redhat.com",
"url": "http://www.securityfocus.com/bid/82307"
},
{
"source": "secalert@redhat.com",
"url": "http://www.securitytracker.com/id/1034882"
},
{
"source": "secalert@redhat.com",
"url": "http://www.slackware.com/security/viewer.php?l=slackware-security\u0026y=2016\u0026m=slackware-security.519965"
},
{
"source": "secalert@redhat.com",
"url": "http://www.ubuntu.com/usn/USN-2882-1"
},
{
"source": "secalert@redhat.com",
"url": "https://security.gentoo.org/glsa/201701-47"
},
{
"source": "secalert@redhat.com",
"url": "https://support.apple.com/HT207170"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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"url": "http://curl.haxx.se/docs/adv_20160127A.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176546.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177342.html"
},
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"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177383.html"
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"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176413.html"
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"url": "http://lists.opensuse.org/opensuse-updates/2016-02/msg00031.html"
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"url": "http://lists.opensuse.org/opensuse-updates/2016-02/msg00044.html"
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"url": "http://lists.opensuse.org/opensuse-updates/2016-02/msg00047.html"
},
{
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"url": "http://packetstormsecurity.com/files/135695/Slackware-Security-Advisory-curl-Updates.html"
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"url": "http://www.debian.org/security/2016/dsa-3455"
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"url": "http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html"
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{
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"url": "http://www.securityfocus.com/bid/82307"
},
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"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securitytracker.com/id/1034882"
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"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.slackware.com/security/viewer.php?l=slackware-security\u0026y=2016\u0026m=slackware-security.519965"
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"url": "http://www.ubuntu.com/usn/USN-2882-1"
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"url": "https://security.gentoo.org/glsa/201701-47"
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"url": "https://support.apple.com/HT207170"
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"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
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"description": [
{
"lang": "en",
"value": "CWE-287"
}
],
"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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