RHSA-2020:4082

Vulnerability from csaf_opensuse - Published: 2020-09-30 00:00 - Updated: 2026-09-20 11:10
Summary
security update for squid
Severity
Important
Notes
Title of the patch: security update for squid
Description of the patch: This security update provides a functional equivalent of RHSA-2020:4082. The original Red Hat(R) advisory is available from the Red Hat web site at https://access.redhat.com/errata/RHSA-2020:4082.
Patchnames: RHSA-2020:4082
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
CVE-2019-12528
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Liberty Linux 7:squid-7:3.5.20-17.el7_9.4.x86_64 —
Vendor Fix
Unresolved product id: SUSE Liberty Linux 7:squid-migration-script-7:3.5.20-17.el7_9.4.x86_64 —
Vendor Fix
Unresolved product id: SUSE Liberty Linux 7:squid-sysvinit-7:3.5.20-17.el7_9.4.x86_64 —
Vendor Fix
Threats
Impact moderate
CVE-2020-15049
8.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected products
Recommended 3 products, the same list as for CVE-2019-12528
Threats
Impact important
CVE-2020-15810
9.6 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Affected products
Recommended 3 products, the same list as for CVE-2019-12528
Threats
Impact critical
CVE-2020-15811
9.6 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Affected products
Recommended 3 products, the same list as for CVE-2019-12528
Threats
Impact critical
CVE-2020-24606
7.7 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Affected products
Recommended 3 products, the same list as for CVE-2019-12528
Threats
Impact important
CVE-2020-8449
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products
Recommended 3 products, the same list as for CVE-2019-12528
Threats
Impact important
CVE-2020-8450
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Affected products
Recommended 3 products, the same list as for CVE-2019-12528
Threats
Impact important
References
To clipboard 

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          "text": "An issue was discovered in Squid before 4.13 and 5.x before 5.0.4. Due to incorrect data validation, HTTP Request Smuggling attacks may succeed against HTTP and HTTPS traffic. This leads to cache poisoning. This allows any client, including browser scripts, to bypass local security and poison the proxy cache and any downstream caches with content from an arbitrary source. When configured for relaxed header parsing (the default), Squid relays headers containing whitespace characters to upstream servers. When this occurs as a prefix to a Content-Length header, the frame length specified will be ignored by Squid (allowing for a conflicting length to be used from another Content-Length header) but relayed upstream.",
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        {
          "category": "general",
          "text": "An issue was discovered in Squid before 4.13 and 5.x before 5.0.4. Due to incorrect data validation, HTTP Request Splitting attacks may succeed against HTTP and HTTPS traffic. This leads to cache poisoning. This allows any client, including browser scripts, to bypass local security and poison the browser cache and any downstream caches with content from an arbitrary source. Squid uses a string search instead of parsing the Transfer-Encoding header to find chunked encoding. This allows an attacker to hide a second request inside Transfer-Encoding: it is interpreted by Squid as chunked and split out into a second request delivered upstream. Squid will then deliver two distinct responses to the client, corrupting any downstream caches.",
          "title": "CVE description"
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      ],
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          },
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            "SUSE Liberty Linux 7:squid-sysvinit-7:3.5.20-17.el7_9.4.x86_64"
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    },
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      "cve": "CVE-2020-24606",
      "ids": [
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          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2020-24606"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "Squid before 4.13 and 5.x before 5.0.4 allows a trusted peer to perform Denial of Service by consuming all available CPU cycles during handling of a crafted Cache Digest response message. This only occurs when cache_peer is used with the cache digests feature. The problem exists because peerDigestHandleReply() livelocking in peer_digest.cc mishandles EOF.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Liberty Linux 7:squid-7:3.5.20-17.el7_9.4.x86_64",
          "SUSE Liberty Linux 7:squid-migration-script-7:3.5.20-17.el7_9.4.x86_64",
          "SUSE Liberty Linux 7:squid-sysvinit-7:3.5.20-17.el7_9.4.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2020-24606",
          "url": "https://www.suse.com/security/cve/CVE-2020-24606"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1175671 for CVE-2020-24606",
          "url": "https://bugzilla.suse.com/1175671"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Liberty Linux 7:squid-7:3.5.20-17.el7_9.4.x86_64",
            "SUSE Liberty Linux 7:squid-migration-script-7:3.5.20-17.el7_9.4.x86_64",
            "SUSE Liberty Linux 7:squid-sysvinit-7:3.5.20-17.el7_9.4.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Liberty Linux 7:squid-7:3.5.20-17.el7_9.4.x86_64",
            "SUSE Liberty Linux 7:squid-migration-script-7:3.5.20-17.el7_9.4.x86_64",
            "SUSE Liberty Linux 7:squid-sysvinit-7:3.5.20-17.el7_9.4.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2020-09-30T00:00:00Z",
          "details": "important"
        }
      ],
      "title": "CVE-2020-24606"
    },
    {
      "cve": "CVE-2020-8449",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2020-8449"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "An issue was discovered in Squid before 4.10. Due to incorrect input validation, it can interpret crafted HTTP requests in unexpected ways to access server resources prohibited by earlier security filters.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Liberty Linux 7:squid-7:3.5.20-17.el7_9.4.x86_64",
          "SUSE Liberty Linux 7:squid-migration-script-7:3.5.20-17.el7_9.4.x86_64",
          "SUSE Liberty Linux 7:squid-sysvinit-7:3.5.20-17.el7_9.4.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2020-8449",
          "url": "https://www.suse.com/security/cve/CVE-2020-8449"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1162687 for CVE-2020-8449",
          "url": "https://bugzilla.suse.com/1162687"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Liberty Linux 7:squid-7:3.5.20-17.el7_9.4.x86_64",
            "SUSE Liberty Linux 7:squid-migration-script-7:3.5.20-17.el7_9.4.x86_64",
            "SUSE Liberty Linux 7:squid-sysvinit-7:3.5.20-17.el7_9.4.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "SUSE Liberty Linux 7:squid-7:3.5.20-17.el7_9.4.x86_64",
            "SUSE Liberty Linux 7:squid-migration-script-7:3.5.20-17.el7_9.4.x86_64",
            "SUSE Liberty Linux 7:squid-sysvinit-7:3.5.20-17.el7_9.4.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2020-09-30T00:00:00Z",
          "details": "important"
        }
      ],
      "title": "CVE-2020-8449"
    },
    {
      "cve": "CVE-2020-8450",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2020-8450"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "An issue was discovered in Squid before 4.10. Due to incorrect buffer management, a remote client can cause a buffer overflow in a Squid instance acting as a reverse proxy.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Liberty Linux 7:squid-7:3.5.20-17.el7_9.4.x86_64",
          "SUSE Liberty Linux 7:squid-migration-script-7:3.5.20-17.el7_9.4.x86_64",
          "SUSE Liberty Linux 7:squid-sysvinit-7:3.5.20-17.el7_9.4.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2020-8450",
          "url": "https://www.suse.com/security/cve/CVE-2020-8450"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1162687 for CVE-2020-8450",
          "url": "https://bugzilla.suse.com/1162687"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Liberty Linux 7:squid-7:3.5.20-17.el7_9.4.x86_64",
            "SUSE Liberty Linux 7:squid-migration-script-7:3.5.20-17.el7_9.4.x86_64",
            "SUSE Liberty Linux 7:squid-sysvinit-7:3.5.20-17.el7_9.4.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
            "version": "3.1"
          },
          "products": [
            "SUSE Liberty Linux 7:squid-7:3.5.20-17.el7_9.4.x86_64",
            "SUSE Liberty Linux 7:squid-migration-script-7:3.5.20-17.el7_9.4.x86_64",
            "SUSE Liberty Linux 7:squid-sysvinit-7:3.5.20-17.el7_9.4.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2020-09-30T00:00:00Z",
          "details": "important"
        }
      ],
      "title": "CVE-2020-8450"
    }
  ]
}



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Tags
Taxonomy of the tags.





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.



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.