CVE-2016-0762 (GCVE-0-2016-0762)

Vulnerability from cvelistv5 – Published: 2017-08-10 16:00 – Updated: 2024-09-17 01:36
VLAI
Summary
The Realm implementations in Apache Tomcat versions 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70 and 6.0.0 to 6.0.45 did not process the supplied password if the supplied user name did not exist. This made a timing attack possible to determine valid user names. Note that the default configuration includes the LockOutRealm which makes exploitation of this vulnerability harder.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
  • Timing Attack
Assigner
References
URL Tags
http://www.securitytracker.com/id/1037144 vdb-entryx_refsource_SECTRACK
https://lists.apache.org/thread.html/1872f96bad43… mailing-listx_refsource_MLIST
https://access.redhat.com/errata/RHSA-2017:2247 vendor-advisoryx_refsource_REDHAT
http://rhn.redhat.com/errata/RHSA-2017-0457.html vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2017:0455 vendor-advisoryx_refsource_REDHAT
http://www.securityfocus.com/bid/93939 vdb-entryx_refsource_BID
http://www.debian.org/security/2016/dsa-3720 vendor-advisoryx_refsource_DEBIAN
https://access.redhat.com/errata/RHSA-2017:0456 vendor-advisoryx_refsource_REDHAT
https://lists.apache.org/thread.html/343558d98287… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/b8a1bf18155b… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/388a323769f1… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/b5e3f51d28cd… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/39ae1f0bd586… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/845312a10aab… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/37220405a377… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/3d19773b4cf0… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/b84ad1258a89… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r03c597a64de… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r9136ff5b13e… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r587e50b86c1… mailing-listx_refsource_MLIST
https://usn.ubuntu.com/4557-1/ vendor-advisoryx_refsource_UBUNTU
https://www.oracle.com//security-alerts/cpujul2021.html x_refsource_MISC
https://security.netapp.com/advisory/ntap-2018060… x_refsource_CONFIRM
https://www.oracle.com/security-alerts/cpuoct2021.html x_refsource_MISC
Impacted products
Vendor Product Version
Apache Software Foundation Apache Tomcat Affected: 9.0.0.M1 to 9.0.0.M9
Affected: 8.5.0 to 8.5.4
Affected: 8.0.0.RC1 to 8.0.36
Affected: 7.0.0 to 7.0.70
Affected: 6.0.0 to 6.0.45
Create a notification for this product.
Date Public
2016-10-27 00:00
Show details on NVD website
To clipboard 

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      "descriptions": "[{\"lang\": \"en\", \"value\": \"The Realm implementations in Apache Tomcat versions 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70 and 6.0.0 to 6.0.45 did not process the supplied password if the supplied user name did not exist. This made a timing attack possible to determine valid user names. Note that the default configuration includes the LockOutRealm which makes exploitation of this vulnerability harder.\"}, {\"lang\": \"es\", \"value\": \"Las implementaciones Realm en Apache Tomcat versiones 9.0.0.M1 a 9.0.0.M9, 8.5.0 a 8.5.4, 8.0.0.RC1 a 8.0.36, 7.0.0 a 7.0.70, y 6.0.0 a 6.0.45 no procesaban la contrase\\u00f1a proporcionada si el nombre de usuario proporcionado no exist\\u00eda. Esto hizo posible la realizaci\\u00f3n de un ataque basado en tiempo para determinar nombres de usuario v\\u00e1lidos. Tenga en cuenta que la configuraci\\u00f3n por defecto incluye LockOutRealm, lo que hace que sea m\\u00e1s dif\\u00edcil explotar esta vulnerabilidad.\"}]",
      "id": "CVE-2016-0762",
      "lastModified": "2024-11-21T02:42:19.707",
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      "published": "2017-08-10T16:29:00.313",
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      "sourceIdentifier": "security@apache.org",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-203\"}]}]"
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Esto hizo posible la realizaci\u00f3n de un ataque basado en tiempo para determinar nombres de usuario v\u00e1lidos. Tenga en cuenta que la configuraci\u00f3n por defecto incluye LockOutRealm, lo que hace que sea m\u00e1s dif\u00edcil explotar esta 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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-04T23:15:23+00:00",
      "cve": "CVE-2016-0762",
      "id": "CVE-2016-0762",
      "initial_release_date": "2016-10-27T00:00:00+00:00",
      "product_status:fixed": "149",
      "product_status:known_affected": "34",
      "product_status:known_not_affected": "2",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "tomcat: timing attack in Realm implementation",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-0762.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "low",
      "current_release_date": "2026-07-29T00:08:48Z",
      "cve": "CVE-2016-0762",
      "id": "CVE-2016-0762",
      "initial_release_date": "2023-02-15T05:09:15Z",
      "product_status:known_affected": "46",
      "product_status:recommended": "202",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2016-0762",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2016-0762.json",
      "version": "12"
    }
  }
}



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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.


Detection rules are retrieved from Rulezet.