UBUNTU-CVE-2020-6750 (CVE-2020-6750)
Vulnerability from osv_ubuntu – Published: 2020-01-09 20:15 – Updated: 2025-07-16 04:55 – Source website
Withdrawn 2025-07-18
VLAI
Details
GSocketClient in GNOME GLib through 2.62.4 may occasionally connect directly to a target address instead of connecting via a proxy server when configured to do so, because the proxy_addr field is mishandled. This bug is timing-dependent and may occur only sporadically depending on network delays. The greatest security relevance is in use cases where a proxy is used to help with privacy/anonymity, even though there is no technical barrier to a direct connection. NOTE: versions before 2.60 are unaffected.
Severity
5.9 (Medium)
N/A (UNKNOWN)
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libglib2.0-0",
"binary_version": "2.48.2-0ubuntu4.4"
},
{
"binary_name": "libglib2.0-0-dbg",
"binary_version": "2.48.2-0ubuntu4.4"
},
{
"binary_name": "libglib2.0-0-dbgsym",
"binary_version": "2.48.2-0ubuntu4.4"
},
{
"binary_name": "libglib2.0-0-refdbg",
"binary_version": "2.48.2-0ubuntu4.4"
},
{
"binary_name": "libglib2.0-0-refdbg-dbgsym",
"binary_version": "2.48.2-0ubuntu4.4"
},
{
"binary_name": "libglib2.0-bin",
"binary_version": "2.48.2-0ubuntu4.4"
},
{
"binary_name": "libglib2.0-bin-dbgsym",
"binary_version": "2.48.2-0ubuntu4.4"
},
{
"binary_name": "libglib2.0-data",
"binary_version": "2.48.2-0ubuntu4.4"
},
{
"binary_name": "libglib2.0-dev",
"binary_version": "2.48.2-0ubuntu4.4"
},
{
"binary_name": "libglib2.0-dev-dbgsym",
"binary_version": "2.48.2-0ubuntu4.4"
},
{
"binary_name": "libglib2.0-doc",
"binary_version": "2.48.2-0ubuntu4.4"
},
{
"binary_name": "libglib2.0-tests",
"binary_version": "2.48.2-0ubuntu4.4"
},
{
"binary_name": "libglib2.0-tests-dbgsym",
"binary_version": "2.48.2-0ubuntu4.4"
},
{
"binary_name": "libglib2.0-udeb",
"binary_version": "2.48.2-0ubuntu4.4"
},
{
"binary_name": "libglib2.0-udeb-dbgsym",
"binary_version": "2.48.2-0ubuntu4.4"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "glib2.0",
"purl": "pkg:deb/ubuntu/glib2.0@2.48.2-0ubuntu4.4?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.48.2-0ubuntu4.4"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.46.1-1",
"2.46.1-2",
"2.47.1-1",
"2.47.3-3",
"2.47.4-1",
"2.47.5-1",
"2.47.6-1",
"2.48.0-1ubuntu3",
"2.48.0-1ubuntu4",
"2.48.1-1~ubuntu16.04.1",
"2.48.2-0ubuntu1",
"2.48.2-0ubuntu3",
"2.48.2-0ubuntu4",
"2.48.2-0ubuntu4.1",
"2.48.2-0ubuntu4.2",
"2.48.2-0ubuntu4.3"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libglib2.0-0",
"binary_version": "2.56.4-0ubuntu0.18.04.4"
},
{
"binary_name": "libglib2.0-0-dbgsym",
"binary_version": "2.56.4-0ubuntu0.18.04.4"
},
{
"binary_name": "libglib2.0-bin",
"binary_version": "2.56.4-0ubuntu0.18.04.4"
},
{
"binary_name": "libglib2.0-bin-dbgsym",
"binary_version": "2.56.4-0ubuntu0.18.04.4"
},
{
"binary_name": "libglib2.0-data",
"binary_version": "2.56.4-0ubuntu0.18.04.4"
},
{
"binary_name": "libglib2.0-dev",
"binary_version": "2.56.4-0ubuntu0.18.04.4"
},
{
"binary_name": "libglib2.0-dev-bin",
"binary_version": "2.56.4-0ubuntu0.18.04.4"
},
{
"binary_name": "libglib2.0-dev-bin-dbgsym",
"binary_version": "2.56.4-0ubuntu0.18.04.4"
},
{
"binary_name": "libglib2.0-doc",
"binary_version": "2.56.4-0ubuntu0.18.04.4"
},
{
"binary_name": "libglib2.0-tests",
"binary_version": "2.56.4-0ubuntu0.18.04.4"
},
{
"binary_name": "libglib2.0-tests-dbgsym",
"binary_version": "2.56.4-0ubuntu0.18.04.4"
},
{
"binary_name": "libglib2.0-udeb",
"binary_version": "2.56.4-0ubuntu0.18.04.4"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "glib2.0",
"purl": "pkg:deb/ubuntu/glib2.0@2.56.4-0ubuntu0.18.04.4?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.56.4-0ubuntu0.18.04.4"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.54.1-1ubuntu1",
"2.55.2-2ubuntu1",
"2.56.0-2ubuntu1",
"2.56.0-4ubuntu1",
"2.56.1-2ubuntu1",
"2.56.2-0ubuntu0.18.04.1",
"2.56.2-0ubuntu0.18.04.2",
"2.56.3-0ubuntu0.18.04.1",
"2.56.4-0ubuntu0.18.04.2",
"2.56.4-0ubuntu0.18.04.3"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libglib2.0-0",
"binary_version": "2.64.1-1"
},
{
"binary_name": "libglib2.0-0-dbgsym",
"binary_version": "2.64.1-1"
},
{
"binary_name": "libglib2.0-bin",
"binary_version": "2.64.1-1"
},
{
"binary_name": "libglib2.0-bin-dbgsym",
"binary_version": "2.64.1-1"
},
{
"binary_name": "libglib2.0-data",
"binary_version": "2.64.1-1"
},
{
"binary_name": "libglib2.0-dev",
"binary_version": "2.64.1-1"
},
{
"binary_name": "libglib2.0-dev-bin",
"binary_version": "2.64.1-1"
},
{
"binary_name": "libglib2.0-dev-bin-dbgsym",
"binary_version": "2.64.1-1"
},
{
"binary_name": "libglib2.0-doc",
"binary_version": "2.64.1-1"
},
{
"binary_name": "libglib2.0-tests",
"binary_version": "2.64.1-1"
},
{
"binary_name": "libglib2.0-tests-dbgsym",
"binary_version": "2.64.1-1"
},
{
"binary_name": "libglib2.0-udeb",
"binary_version": "2.64.1-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "glib2.0",
"purl": "pkg:deb/ubuntu/glib2.0@2.64.1-1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.64.1-1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.62.1-1",
"2.63.1-2",
"2.63.1-2ubuntu1",
"2.63.3-1",
"2.63.3-3",
"2.63.5-2",
"2.64.0-1"
]
}
],
"aliases": [],
"details": "GSocketClient in GNOME GLib through 2.62.4 may occasionally connect directly to a target address instead of connecting via a proxy server when configured to do so, because the proxy_addr field is mishandled. This bug is timing-dependent and may occur only sporadically depending on network delays. The greatest security relevance is in use cases where a proxy is used to help with privacy/anonymity, even though there is no technical barrier to a direct connection. NOTE: versions before 2.60 are unaffected.",
"id": "UBUNTU-CVE-2020-6750",
"modified": "2025-07-16T04:55:35Z",
"published": "2020-01-09T20:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-6750"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-6750"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2020-6750"
],
"withdrawn": "2025-07-18T16:45:43Z"
}
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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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