USN-3177-1 (UBUNTU-CVE-2016-0762)
Vulnerability from osv_ubuntu – Published: 2017-01-23 18:24 – Updated: 2026-04-27 14:11 – Source websiteIt was discovered that the Tomcat realm implementations incorrectly handled passwords when a username didn't exist. A remote attacker could possibly use this issue to enumerate usernames. This issue only applied to Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-0762)
Alvaro Munoz and Alexander Mirosh discovered that Tomcat incorrectly limited use of a certain utility method. A malicious application could possibly use this to bypass Security Manager restrictions. This issue only applied to Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-5018)
It was discovered that Tomcat did not protect applications from untrusted data in the HTTP_PROXY environment variable. A remote attacker could possibly use this issue to redirect outbound traffic to an arbitrary proxy server. This issue only applied to Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-5388)
It was discovered that Tomcat incorrectly controlled reading system properties. A malicious application could possibly use this to bypass Security Manager restrictions. This issue only applied to Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-6794)
It was discovered that Tomcat incorrectly controlled certain configuration parameters. A malicious application could possibly use this to bypass Security Manager restrictions. This issue only applied to Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-6796)
It was discovered that Tomcat incorrectly limited access to global JNDI resources. A malicious application could use this to access any global JNDI resource without an explicit ResourceLink. This issue only applied to Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-6797)
Regis Leroy discovered that Tomcat incorrectly filtered certain invalid characters from the HTTP request line. A remote attacker could possibly use this issue to inject data into HTTP responses. (CVE-2016-6816)
Pierre Ernst discovered that the Tomcat JmxRemoteLifecycleListener did not implement a recommended fix. A remote attacker could possibly use this issue to execute arbitrary code. (CVE-2016-8735)
It was discovered that Tomcat incorrectly handled error handling in the send file code. A remote attacker could possibly use this issue to access information from other requests. (CVE-2016-8745)
Paul Szabo discovered that the Tomcat package incorrectly handled upgrades and removals. A local attacker could possibly use this issue to obtain root privileges. (CVE-2016-9774, CVE-2016-9775)
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2016-5018",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2016-5388",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2016-6794",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2016-6796",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2016-6797",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2016-6816",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2016-8735",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2016-8745",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2016-9774",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2016-9775",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:14.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libservlet3.0-java",
"binary_version": "7.0.52-1ubuntu0.8"
},
{
"binary_name": "libtomcat7-java",
"binary_version": "7.0.52-1ubuntu0.8"
},
{
"binary_name": "tomcat7",
"binary_version": "7.0.52-1ubuntu0.8"
},
{
"binary_name": "tomcat7-admin",
"binary_version": "7.0.52-1ubuntu0.8"
},
{
"binary_name": "tomcat7-common",
"binary_version": "7.0.52-1ubuntu0.8"
},
{
"binary_name": "tomcat7-docs",
"binary_version": "7.0.52-1ubuntu0.8"
},
{
"binary_name": "tomcat7-examples",
"binary_version": "7.0.52-1ubuntu0.8"
},
{
"binary_name": "tomcat7-user",
"binary_version": "7.0.52-1ubuntu0.8"
}
]
},
"package": {
"ecosystem": "Ubuntu:14.04:LTS",
"name": "tomcat7",
"purl": "pkg:deb/ubuntu/tomcat7@7.0.52-1ubuntu0.8?arch=source\u0026distro=trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "7.0.52-1ubuntu0.8"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"7.0.42-1",
"7.0.47-1",
"7.0.50-1",
"7.0.52-1",
"7.0.52-1ubuntu0.1",
"7.0.52-1ubuntu0.3",
"7.0.52-1ubuntu0.6",
"7.0.52-1ubuntu0.7"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2016-0762",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2016-5018",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2016-5388",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2016-6794",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2016-6796",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2016-6797",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2016-6816",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2016-8735",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2016-8745",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2016-9774",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2016-9775",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:16.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libservlet3.1-java",
"binary_version": "8.0.32-1ubuntu1.3"
},
{
"binary_name": "libtomcat8-java",
"binary_version": "8.0.32-1ubuntu1.3"
},
{
"binary_name": "tomcat8",
"binary_version": "8.0.32-1ubuntu1.3"
},
{
"binary_name": "tomcat8-admin",
"binary_version": "8.0.32-1ubuntu1.3"
},
{
"binary_name": "tomcat8-common",
"binary_version": "8.0.32-1ubuntu1.3"
},
{
"binary_name": "tomcat8-docs",
"binary_version": "8.0.32-1ubuntu1.3"
},
{
"binary_name": "tomcat8-examples",
"binary_version": "8.0.32-1ubuntu1.3"
},
{
"binary_name": "tomcat8-user",
"binary_version": "8.0.32-1ubuntu1.3"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "tomcat8",
"purl": "pkg:deb/ubuntu/tomcat8@8.0.32-1ubuntu1.3?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "8.0.32-1ubuntu1.3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"8.0.26-1",
"8.0.28-1",
"8.0.30-1",
"8.0.32-1",
"8.0.32-1ubuntu1",
"8.0.32-1ubuntu1.1",
"8.0.32-1ubuntu1.2"
]
}
],
"aliases": [],
"details": "It was discovered that the Tomcat realm implementations incorrectly handled\npasswords when a username didn\u0027t exist. A remote attacker could possibly\nuse this issue to enumerate usernames. This issue only applied to Ubuntu\n12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-0762)\n\nAlvaro Munoz and Alexander Mirosh discovered that Tomcat incorrectly\nlimited use of a certain utility method. A malicious application could\npossibly use this to bypass Security Manager restrictions. This issue only\napplied to Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.\n(CVE-2016-5018)\n\nIt was discovered that Tomcat did not protect applications from untrusted\ndata in the HTTP_PROXY environment variable. A remote attacker could\npossibly use this issue to redirect outbound traffic to an arbitrary proxy\nserver. This issue only applied to Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and\nUbuntu 16.04 LTS. (CVE-2016-5388)\n\nIt was discovered that Tomcat incorrectly controlled reading system\nproperties. A malicious application could possibly use this to bypass\nSecurity Manager restrictions. This issue only applied to Ubuntu 12.04 LTS,\nUbuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-6794)\n\nIt was discovered that Tomcat incorrectly controlled certain configuration\nparameters. A malicious application could possibly use this to bypass\nSecurity Manager restrictions. This issue only applied to Ubuntu 12.04 LTS,\nUbuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-6796)\n\nIt was discovered that Tomcat incorrectly limited access to global JNDI\nresources. A malicious application could use this to access any global JNDI\nresource without an explicit ResourceLink. This issue only applied to\nUbuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-6797)\n\nRegis Leroy discovered that Tomcat incorrectly filtered certain invalid\ncharacters from the HTTP request line. A remote attacker could possibly\nuse this issue to inject data into HTTP responses. (CVE-2016-6816)\n\nPierre Ernst discovered that the Tomcat JmxRemoteLifecycleListener did not\nimplement a recommended fix. A remote attacker could possibly use this\nissue to execute arbitrary code. (CVE-2016-8735)\n\nIt was discovered that Tomcat incorrectly handled error handling in the\nsend file code. A remote attacker could possibly use this issue to access\ninformation from other requests. (CVE-2016-8745)\n\nPaul Szabo discovered that the Tomcat package incorrectly handled upgrades\nand removals. A local attacker could possibly use this issue to obtain\nroot privileges. (CVE-2016-9774, CVE-2016-9775)\n",
"id": "USN-3177-1",
"modified": "2026-04-27T14:11:22Z",
"published": "2017-01-23T18:24:10Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-3177-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2016-0762"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2016-5018"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2016-5388"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2016-6794"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2016-6796"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2016-6797"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2016-6816"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2016-8735"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2016-8745"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2016-9774"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2016-9775"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "tomcat6, tomcat7, tomcat8 vulnerabilities",
"upstream": [
"UBUNTU-CVE-2016-0762",
"UBUNTU-CVE-2016-5018",
"UBUNTU-CVE-2016-5388",
"UBUNTU-CVE-2016-6794",
"UBUNTU-CVE-2016-6796",
"UBUNTU-CVE-2016-6797",
"UBUNTU-CVE-2016-6816",
"UBUNTU-CVE-2016-8735",
"UBUNTU-CVE-2016-8745",
"UBUNTU-CVE-2016-9774",
"UBUNTU-CVE-2016-9775"
]
}
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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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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.