rhsa-2010_0221
Vulnerability from csaf_redhat
Published
2010-03-29 12:00
Modified
2024-11-22 03:10
Summary
Red Hat Security Advisory: squid security and bug fix update

Notes

Topic
An updated squid package that fixes two security issues and several bugs is now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having low security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.
Details
Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects. A flaw was found in the way Squid processed certain external ACL helper HTTP header fields that contained a delimiter that was not a comma. A remote attacker could issue a crafted request to the Squid server, causing excessive CPU use (up to 100%). (CVE-2009-2855) Note: The CVE-2009-2855 issue only affected non-default configurations that use an external ACL helper script. A flaw was found in the way Squid handled truncated DNS replies. A remote attacker able to send specially-crafted UDP packets to Squid's DNS client port could trigger an assertion failure in Squid's child process, causing that child process to exit. (CVE-2010-0308) This update also fixes the following bugs: * Squid's init script returns a non-zero value when trying to stop a stopped service. This is not LSB compliant and can generate difficulties in cluster environments. This update makes stopping LSB compliant. (BZ#521926) * Squid is not currently built to support MAC address filtering in ACLs. This update includes support for MAC address filtering. (BZ#496170) * Squid is not currently built to support Kerberos negotiate authentication. This update enables Kerberos authentication. (BZ#516245) * Squid does not include the port number as part of URIs it constructs when configured as an accelerator. This results in a 403 error. This update corrects this behavior. (BZ#538738) * the error_map feature does not work if the same handling is set also on the HTTP server that operates in deflate mode. This update fixes this issue. (BZ#470843) All users of squid should upgrade to this updated package, which resolves these issues. After installing this update, the squid service will be restarted automatically.
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": "An updated squid package that fixes two security issues and several bugs is\nnow available for Red Hat Enterprise Linux 5.\n\nThe Red Hat Security Response Team has rated this update as having low\nsecurity impact. Common Vulnerability Scoring System (CVSS) base scores,\nwhich give detailed severity ratings, are available for each vulnerability\nfrom the CVE links in the References section.",
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        "text": "Squid is a high-performance proxy caching server for web clients,\nsupporting FTP, Gopher, and HTTP data objects.\n\nA flaw was found in the way Squid processed certain external ACL helper\nHTTP header fields that contained a delimiter that was not a comma. A\nremote attacker could issue a crafted request to the Squid server, causing\nexcessive CPU use (up to 100%). (CVE-2009-2855)\n\nNote: The CVE-2009-2855 issue only affected non-default configurations that\nuse an external ACL helper script.\n\nA flaw was found in the way Squid handled truncated DNS replies. A remote\nattacker able to send specially-crafted UDP packets to Squid\u0027s DNS client\nport could trigger an assertion failure in Squid\u0027s child process, causing\nthat child process to exit. (CVE-2010-0308)\n\nThis update also fixes the following bugs:\n\n* Squid\u0027s init script returns a non-zero value when trying to stop a\nstopped service. This is not LSB compliant and can generate difficulties in\ncluster environments. This update makes stopping LSB compliant. (BZ#521926)\n\n* Squid is not currently built to support MAC address filtering in ACLs.\nThis update includes support for MAC address filtering. (BZ#496170)\n\n* Squid is not currently built to support Kerberos negotiate\nauthentication. This update enables Kerberos authentication. (BZ#516245)\n\n* Squid does not include the port number as part of URIs it constructs when\nconfigured as an accelerator. This results in a 403 error. This update\ncorrects this behavior. (BZ#538738)\n\n* the error_map feature does not work if the same handling is set also on\nthe HTTP server that operates in deflate mode. This update fixes this\nissue. (BZ#470843)\n\nAll users of squid should upgrade to this updated package, which resolves\nthese issues. After installing this update, the squid service will be\nrestarted automatically.",
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        "product_reference": "squid-debuginfo-7:2.6.STABLE21-6.el5.ia64",
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      {
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        },
        "product_reference": "squid-debuginfo-7:2.6.STABLE21-6.el5.ppc",
        "relates_to_product_reference": "5Server"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
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          "product_id": "5Server:squid-debuginfo-7:2.6.STABLE21-6.el5.s390x"
        },
        "product_reference": "squid-debuginfo-7:2.6.STABLE21-6.el5.s390x",
        "relates_to_product_reference": "5Server"
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        "category": "default_component_of",
        "full_product_name": {
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        },
        "product_reference": "squid-debuginfo-7:2.6.STABLE21-6.el5.x86_64",
        "relates_to_product_reference": "5Server"
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2009-2855",
      "discovery_date": "2009-08-18T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "518182"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "The strListGetItem function in src/HttpHeaderTools.c in Squid 2.7 allows remote attackers to cause a denial of service via a crafted auth header with certain comma delimiters that trigger an infinite loop of calls to the strcspn function.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "squid: DoS (100% CPU use) while processing certain external ACL helper HTTP headers",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue did not affect the versions of the squid packages, as shipped with Red Hat Enterprise Linux 3 and 4.",
          "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"
        }
      ],
      "product_status": {
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        ]
      },
      "references": [
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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2009-2855"
        },
        {
          "category": "external",
          "summary": "RHBZ#518182",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=518182"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2009-2855",
          "url": "https://www.cve.org/CVERecord?id=CVE-2009-2855"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2009-2855",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2009-2855"
        }
      ],
      "release_date": "2009-06-28T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2010-03-29T12:00:00+00:00",
          "details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttp://kbase.redhat.com/faq/docs/DOC-11259",
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            "5Client-Workstation:squid-7:2.6.STABLE21-6.el5.ppc",
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            "5Client-Workstation:squid-7:2.6.STABLE21-6.el5.src",
            "5Client-Workstation:squid-7:2.6.STABLE21-6.el5.x86_64",
            "5Client-Workstation:squid-debuginfo-7:2.6.STABLE21-6.el5.i386",
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            "5Server:squid-debuginfo-7:2.6.STABLE21-6.el5.s390x",
            "5Server:squid-debuginfo-7:2.6.STABLE21-6.el5.x86_64"
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          "restart_required": {
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          "url": "https://access.redhat.com/errata/RHSA-2010:0221"
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      ],
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "ADJACENT_NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 2.9,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:A/AC:M/Au:N/C:N/I:N/A:P",
            "version": "2.0"
          },
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "squid: DoS (100% CPU use) while processing certain external ACL helper HTTP headers"
    },
    {
      "cve": "CVE-2010-0308",
      "discovery_date": "2009-12-28T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "556389"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "lib/rfc1035.c in Squid 2.x, 3.0 through 3.0.STABLE22, and 3.1 through 3.1.0.15 allows remote attackers to cause a denial of service (assertion failure) via a crafted DNS packet that only contains a header.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "squid: temporary DoS (assertion failure) triggered by truncated DNS packet (SQUID-2010:1)",
          "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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          "url": "https://www.cve.org/CVERecord?id=CVE-2010-0308"
        },
        {
          "category": "external",
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          "url": "https://nvd.nist.gov/vuln/detail/CVE-2010-0308"
        }
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      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "squid: temporary DoS (assertion failure) triggered by truncated DNS packet (SQUID-2010:1)"
    }
  ]
}


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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.
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  • 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.