csaf_redhat - rhsa-2011

rhsa-2011_1791

Vulnerability from csaf_redhat

Published

2011-12-06 21:18

Modified

2024-11-22 04:52

Summary

Red Hat Security Advisory: squid security update

Notes

Topic

An updated squid package that fixes one security issue is now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

Details

Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects. An input validation flaw was found in the way Squid calculated the total number of resource records in the answer section of multiple name server responses. An attacker could use this flaw to cause Squid to crash. (CVE-2011-4096) Users of squid should upgrade to this updated package, which contains a backported patch to correct this issue. After installing this update, the squid service will be restarted automatically.

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.

JSON

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        "text": "An updated squid package that fixes one security issue is now available for\nRed Hat Enterprise Linux 6.\n\nThe Red Hat Security Response Team has rated this update as having moderate\nsecurity impact. A Common Vulnerability Scoring System (CVSS) base score,\nwhich gives a detailed severity rating, is available from the CVE link in\nthe References section.",
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  "vulnerabilities": [
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      "discovery_date": "2011-10-30T00:00:00+00:00",
      "ids": [
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          "system_name": "Red Hat Bugzilla ID",
          "text": "750316"
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      "notes": [
        {
          "category": "description",
          "text": "The idnsGrokReply function in Squid before 3.1.16 does not properly free memory, which allows remote attackers to cause a denial of service (daemon abort) via a DNS reply containing a CNAME record that references another CNAME record that contains an empty A record.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "squid: Invalid free by processing CNAME DNS record pointing to another CNAME record pointing to an empty A-record",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue did not affect the versions of squid as shipped with Red Hat Enterprise Linux 4 and 5 as they did not include IPv6 support. This issue was introduced with the addition of IPv6 support in Squid 3.1 (in the changes made to the idnsGrokReply function).",
          "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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          "6Workstation-6.2.z:squid-7:3.1.10-1.el6_2.1.x86_64",
          "6Workstation-6.2.z:squid-debuginfo-7:3.1.10-1.el6_2.1.i686",
          "6Workstation-6.2.z:squid-debuginfo-7:3.1.10-1.el6_2.1.ppc64",
          "6Workstation-6.2.z:squid-debuginfo-7:3.1.10-1.el6_2.1.s390x",
          "6Workstation-6.2.z:squid-debuginfo-7:3.1.10-1.el6_2.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2011-4096"
        },
        {
          "category": "external",
          "summary": "RHBZ#750316",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=750316"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2011-4096",
          "url": "https://www.cve.org/CVERecord?id=CVE-2011-4096"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2011-4096",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2011-4096"
        }
      ],
      "release_date": "2011-06-06T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2011-12-06T21:18:00+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\nhttps://access.redhat.com/kb/docs/DOC-11259",
          "product_ids": [
            "6Server-6.2.z:squid-7:3.1.10-1.el6_2.1.i686",
            "6Server-6.2.z:squid-7:3.1.10-1.el6_2.1.ppc64",
            "6Server-6.2.z:squid-7:3.1.10-1.el6_2.1.s390x",
            "6Server-6.2.z:squid-7:3.1.10-1.el6_2.1.src",
            "6Server-6.2.z:squid-7:3.1.10-1.el6_2.1.x86_64",
            "6Server-6.2.z:squid-debuginfo-7:3.1.10-1.el6_2.1.i686",
            "6Server-6.2.z:squid-debuginfo-7:3.1.10-1.el6_2.1.ppc64",
            "6Server-6.2.z:squid-debuginfo-7:3.1.10-1.el6_2.1.s390x",
            "6Server-6.2.z:squid-debuginfo-7:3.1.10-1.el6_2.1.x86_64",
            "6Workstation-6.2.z:squid-7:3.1.10-1.el6_2.1.i686",
            "6Workstation-6.2.z:squid-7:3.1.10-1.el6_2.1.ppc64",
            "6Workstation-6.2.z:squid-7:3.1.10-1.el6_2.1.s390x",
            "6Workstation-6.2.z:squid-7:3.1.10-1.el6_2.1.src",
            "6Workstation-6.2.z:squid-7:3.1.10-1.el6_2.1.x86_64",
            "6Workstation-6.2.z:squid-debuginfo-7:3.1.10-1.el6_2.1.i686",
            "6Workstation-6.2.z:squid-debuginfo-7:3.1.10-1.el6_2.1.ppc64",
            "6Workstation-6.2.z:squid-debuginfo-7:3.1.10-1.el6_2.1.s390x",
            "6Workstation-6.2.z:squid-debuginfo-7:3.1.10-1.el6_2.1.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2011:1791"
        }
      ],
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "LOW",
            "accessVector": "ADJACENT_NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 3.3,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:A/AC:L/Au:N/C:N/I:N/A:P",
            "version": "2.0"
          },
          "products": [
            "6Server-6.2.z:squid-7:3.1.10-1.el6_2.1.i686",
            "6Server-6.2.z:squid-7:3.1.10-1.el6_2.1.ppc64",
            "6Server-6.2.z:squid-7:3.1.10-1.el6_2.1.s390x",
            "6Server-6.2.z:squid-7:3.1.10-1.el6_2.1.src",
            "6Server-6.2.z:squid-7:3.1.10-1.el6_2.1.x86_64",
            "6Server-6.2.z:squid-debuginfo-7:3.1.10-1.el6_2.1.i686",
            "6Server-6.2.z:squid-debuginfo-7:3.1.10-1.el6_2.1.ppc64",
            "6Server-6.2.z:squid-debuginfo-7:3.1.10-1.el6_2.1.s390x",
            "6Server-6.2.z:squid-debuginfo-7:3.1.10-1.el6_2.1.x86_64",
            "6Workstation-6.2.z:squid-7:3.1.10-1.el6_2.1.i686",
            "6Workstation-6.2.z:squid-7:3.1.10-1.el6_2.1.ppc64",
            "6Workstation-6.2.z:squid-7:3.1.10-1.el6_2.1.s390x",
            "6Workstation-6.2.z:squid-7:3.1.10-1.el6_2.1.src",
            "6Workstation-6.2.z:squid-7:3.1.10-1.el6_2.1.x86_64",
            "6Workstation-6.2.z:squid-debuginfo-7:3.1.10-1.el6_2.1.i686",
            "6Workstation-6.2.z:squid-debuginfo-7:3.1.10-1.el6_2.1.ppc64",
            "6Workstation-6.2.z:squid-debuginfo-7:3.1.10-1.el6_2.1.s390x",
            "6Workstation-6.2.z:squid-debuginfo-7:3.1.10-1.el6_2.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "squid: Invalid free by processing CNAME DNS record pointing to another CNAME record pointing to an empty A-record"
    }
  ]
}

cve-2011-4096

Vulnerability from cvelistv5

Published

2011-11-17 19:00

Modified

2024-08-06 23:53

Severity ?

Summary

The idnsGrokReply function in Squid before 3.1.16 does not properly free memory, which allows remote attackers to cause a denial of service (daemon abort) via a DNS reply containing a CNAME record that references another CNAME record that contains an empty A record.

References

▼	URL	Tags
	http://bugs.squid-cache.org/show_bug.cgi?id=3237#c12	x_refsource_MISC
	http://www.redhat.com/support/errata/RHSA-2011-1791.html	vendor-advisory, x_refsource_REDHAT
	http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html	vendor-advisory, x_refsource_SUSE
	http://www.openwall.com/lists/oss-security/2011/10/31/5	mailing-list, x_refsource_MLIST
	http://www.securitytracker.com/id?1026265	vdb-entry, x_refsource_SECTRACK
	http://www.openwall.com/lists/oss-security/2011/11/01/3	mailing-list, x_refsource_MLIST
	http://www.mandriva.com/security/advisories?name=MDVSA-2011:193	vendor-advisory, x_refsource_MANDRIVA
	http://secunia.com/advisories/46609	third-party-advisory, x_refsource_SECUNIA
	http://www.squid-cache.org/Versions/v3/3.1/changesets/SQUID_3_1_16.html	x_refsource_CONFIRM
	http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html	vendor-advisory, x_refsource_SUSE
	http://secunia.com/advisories/47459	third-party-advisory, x_refsource_SECUNIA

Impacted products

▼	Vendor	Product
	n/a	n/a

Show details on NVD website

JSON

To clipboard

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            "url": "http://bugs.squid-cache.org/show_bug.cgi?id=3237#c12"
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            "name": "RHSA-2011:1791",
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            "url": "http://www.redhat.com/support/errata/RHSA-2011-1791.html"
          },
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            "name": "SUSE-SU-2016:1996",
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              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
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            "url": "http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html"
          },
          {
            "name": "[oss-security] 20111031 CVE Request -- Squid v3.1.16 -- Invalid free by processing CNAME DNS record pointing to another CNAME record pointing to an empty A-record",
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            "url": "http://www.securitytracker.com/id?1026265"
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          {
            "name": "[oss-security] 20111031 Re: CVE Request -- Squid v3.1.16 -- Invalid free by processing CNAME DNS record pointing to another CNAME record pointing to an empty A-record",
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Sightings

Author	Source	Type	Date

Nomenclature

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.

Action not permitted