rhsa-2020_4082
Vulnerability from csaf_redhat
Published
2020-09-30 07:07
Modified
2024-11-05 22:47
Summary
Red Hat Security Advisory: squid security update
Notes
Topic
An update for squid is now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.
Security Fix(es):
* squid: HTTP Request Smuggling could result in cache poisoning (CVE-2020-15810)
* squid: HTTP Request Splitting could result in cache poisoning (CVE-2020-15811)
* squid: Information Disclosure issue in FTP Gateway (CVE-2019-12528)
* squid: Improper input validation issues in HTTP Request processing (CVE-2020-8449)
* squid: Buffer overflow in reverse-proxy configurations (CVE-2020-8450)
* squid: Request smuggling and poisoning attack against the HTTP cache (CVE-2020-15049)
* squid: Improper input validation could result in a DoS (CVE-2020-24606)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
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"text": "A flaw was found in squid. It allows a crafted FTP server to trigger disclosure of sensitive information from heap memory, such as information associated with other users\u0027 sessions or non-Squid processes.",
"title": "Vulnerability description"
},
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"text": "squid: Information Disclosure issue in FTP Gateway",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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"title": "squid: Information Disclosure issue in FTP Gateway"
},
{
"cve": "CVE-2020-8449",
"cwe": {
"id": "CWE-20",
"name": "Improper Input Validation"
},
"discovery_date": "2020-02-02T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1798540"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in squid. Due to incorrect input validation, squid can interpret crafted HTTP requests in unexpected ways to access server resources prohibited by earlier security filters.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "squid: Improper input validation issues in HTTP Request processing",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This only affects deployments acting as reverse proxy with a http_port \u0027accel\u0027 or \u0027vhost\u0027 (squid 2.x and 3.x) or http_port \u0027accel\u0027 configuration (squid 4.x).",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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"category": "external",
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{
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{
"category": "description",
"text": "A flaw was found in squid. Due to incorrect buffer management, a remote client can cause a buffer overflow in a Squid instance acting as a reverse proxy.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "squid: Buffer overflow in reverse-proxy configurations",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Although the squid packages for Red Hat Enterprise Linux 6 through 8 are affected, they are compiled with FORTIFY_SOURCE, which in this case limits the impact of the buffer overflow to an application termination. This only affects deployments acting as reverse proxy with a http_port \u0027accel\u0027 or \u0027vhost\u0027 (squid 2.x and 3.x) or http_port \u0027accel\u0027 configuration (squid 4.x).",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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{
"category": "external",
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1798552"
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},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-8450",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8450"
}
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"release_date": "2020-02-03T00:00:00+00:00",
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{
"cve": "CVE-2020-15049",
"cwe": {
"id": "CWE-444",
"name": "Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request/Response Smuggling\u0027)"
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"ids": [
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"text": "1852550"
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{
"category": "description",
"text": "A flaw was found in squid. A trusted client is able to perform a request smuggling and poison the HTTP cache contents with crafted HTTP(S) request messages. This attack requires an upstream server to participate in the smuggling and generate the poison response sequence. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "squid: Request smuggling and poisoning attack against the HTTP cache",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue has been rated as having moderate security impact, (despite of having a higher CVSS scoring) because the attack requires an upstream server to participate in the smuggling attack and generate the poison response sequence, which is really uncommon because most popular software are not vulnerable to participation in this attack. While the vulnerability does exists in squid, it is not easily exploitable and requires participation of other components on the network.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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"category": "impact",
"details": "Moderate"
}
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"title": "squid: Request smuggling and poisoning attack against the HTTP cache"
},
{
"cve": "CVE-2020-15810",
"cwe": {
"id": "CWE-444",
"name": "Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request/Response Smuggling\u0027)"
},
"discovery_date": "2020-08-24T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1871700"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in squid. Due to incorrect data validation, a HTTP Request Smuggling attack against HTTP and HTTPS traffic is possible leading to cache poisoning. The highest threat from this vulnerability is to data confidentiality and integrity.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "squid: HTTP Request Smuggling could result in cache poisoning",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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{
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{
"category": "external",
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-15810"
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"release_date": "2020-08-23T00:00:00+00:00",
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"title": "squid: HTTP Request Smuggling could result in cache poisoning"
},
{
"cve": "CVE-2020-15811",
"cwe": {
"id": "CWE-444",
"name": "Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request/Response Smuggling\u0027)"
},
"discovery_date": "2020-08-24T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1871702"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in squid. Due to incorrect data validation, an HTTP Request Splitting attack against HTTP and HTTPS traffic is possible leading to cache poisoning. The highest threat from this vulnerability is to data confidentiality and integrity.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "squid: HTTP Request Splitting could result in cache poisoning",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2020-15811"
},
{
"category": "external",
"summary": "RHBZ#1871702",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1871702"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2020-15811",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-15811"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-15811",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-15811"
}
],
"release_date": "2020-08-23T00:00:00+00:00",
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{
"category": "vendor_fix",
"date": "2020-09-30T07:07:39+00:00",
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{
"cvss_v3": {
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"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 9.6,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
"version": "3.1"
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"category": "impact",
"details": "Important"
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"title": "squid: HTTP Request Splitting could result in cache poisoning"
},
{
"cve": "CVE-2020-24606",
"cwe": {
"id": "CWE-20",
"name": "Improper Input Validation"
},
"discovery_date": "2020-08-24T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1871705"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in squid. A denial of service attack is possible due to an improper input validation. The highest threat from this vulnerability is to system availability.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "squid: Improper input validation could result in a DoS",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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{
"category": "external",
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{
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"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "squid: Improper input validation could result in a DoS"
}
]
}
Loading...
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.