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ubuntu-cve-2019-0197
Vulnerability from osv_ubuntu
Published
2019-06-11 00:00
Modified
2026-04-22 07:38
Summary
Details
A vulnerability was found in Apache HTTP Server 2.4.34 to 2.4.38. When HTTP/2 was enabled for a http: host or H2Upgrade was enabled for h2 on a https: host, an Upgrade request from http/1.1 to http/2 that was not the first request on a connection could lead to a misconfiguration and crash. Server that never enabled the h2 protocol or that only enabled it for https: and did not set "H2Upgrade on" are unaffected by this issue.
Severity
4.2 (Medium)
4.2 (Medium)
N/A (UNKNOWN)
References
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"aliases": [],
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"id": "UBUNTU-CVE-2019-0197",
"modified": "2026-04-22T07:38:49Z",
"published": "2019-06-11T00:00:00Z",
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"schema_version": "1.7.0",
"severity": [
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"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L",
"type": "CVSS_V3"
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{
"score": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
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}
CVE-2019-0197 (GCVE-0-2019-0197)
Vulnerability from cvelistv5 – Published: 2019-06-11 21:35 – Updated: 2024-08-04 17:44
VLAI
EPSS
VEX
Summary
A vulnerability was found in Apache HTTP Server 2.4.34 to 2.4.38. When HTTP/2 was enabled for a http: host or H2Upgrade was enabled for h2 on a https: host, an Upgrade request from http/1.1 to http/2 that was not the first request on a connection could lead to a misconfiguration and crash. Server that never enabled the h2 protocol or that only enabled it for https: and did not set "H2Upgrade on" are unaffected by this issue.
Severity
No CVSS data available.
CWE
- mod_http2, possible crash on late upgrade
Assigner
References
30 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Affected:
2.4.34 to 2.4.38
|
Date Public
2019-04-01 00:00
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usn-4113-1
Vulnerability from osv_ubuntu
Published
2019-08-29 22:31
Modified
2026-04-27 14:11
Summary
apache2 vulnerabilities
Details
Stefan Eissing discovered that the HTTP/2 implementation in Apache did not properly handle upgrade requests from HTTP/1.1 to HTTP/2 in some situations. A remote attacker could use this to cause a denial of service (daemon crash). This issue only affected Ubuntu 18.04 LTS and Ubuntu 19.04. (CVE-2019-0197)
Craig Young discovered that a memory overwrite error existed in Apache when performing HTTP/2 very early pushes in some situations. A remote attacker could use this to cause a denial of service (daemon crash). This issue only affected Ubuntu 18.04 LTS and Ubuntu 19.04. (CVE-2019-10081)
Craig Young discovered that a read-after-free error existed in the HTTP/2 implementation in Apache during connection shutdown. A remote attacker could use this to possibly cause a denial of service (daemon crash) or possibly expose sensitive information. This issue only affected Ubuntu 18.04 LTS and Ubuntu 19.04. (CVE-2019-10082)
Matei Badanoiu discovered that the mod_proxy component of Apache did not properly filter URLs when reporting errors in some configurations. A remote attacker could possibly use this issue to conduct cross-site scripting (XSS) attacks. (CVE-2019-10092)
Daniel McCarney discovered that mod_remoteip component of Apache contained a stack buffer overflow when parsing headers from a trusted intermediary proxy in some situations. A remote attacker controlling a trusted proxy could use this to cause a denial of service or possibly execute arbitrary code. This issue only affected Ubuntu 19.04. (CVE-2019-10097)
Yukitsugu Sasaki discovered that the mod_rewrite component in Apache was vulnerable to open redirects in some situations. A remote attacker could use this to possibly expose sensitive information or bypass intended restrictions. (CVE-2019-10098)
Jonathan Looney discovered that the HTTP/2 implementation in Apache did not properly limit the amount of buffering for client connections in some situations. A remote attacker could use this to cause a denial of service (unresponsive daemon). This issue only affected Ubuntu 18.04 LTS and Ubuntu 19.04. (CVE-2019-9517)
References
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"2.4.29-1ubuntu4.3",
"2.4.29-1ubuntu4.4",
"2.4.29-1ubuntu4.5",
"2.4.29-1ubuntu4.6",
"2.4.29-1ubuntu4.7",
"2.4.29-1ubuntu4.8"
]
}
],
"aliases": [],
"details": "Stefan Eissing discovered that the HTTP/2 implementation in Apache\ndid not properly handle upgrade requests from HTTP/1.1 to HTTP/2 in\nsome situations. A remote attacker could use this to cause a denial\nof service (daemon crash). This issue only affected Ubuntu 18.04 LTS\nand Ubuntu 19.04. (CVE-2019-0197)\n\nCraig Young discovered that a memory overwrite error existed in\nApache when performing HTTP/2 very early pushes in some situations. A\nremote attacker could use this to cause a denial of service (daemon\ncrash). This issue only affected Ubuntu 18.04 LTS and Ubuntu 19.04.\n(CVE-2019-10081)\n\nCraig Young discovered that a read-after-free error existed in the\nHTTP/2 implementation in Apache during connection shutdown. A remote\nattacker could use this to possibly cause a denial of service (daemon\ncrash) or possibly expose sensitive information. This issue only\naffected Ubuntu 18.04 LTS and Ubuntu 19.04. (CVE-2019-10082)\n\nMatei Badanoiu discovered that the mod_proxy component of\nApache did not properly filter URLs when reporting errors in some\nconfigurations. A remote attacker could possibly use this issue to\nconduct cross-site scripting (XSS) attacks. (CVE-2019-10092)\n\nDaniel McCarney discovered that mod_remoteip component of Apache\ncontained a stack buffer overflow when parsing headers from a trusted\nintermediary proxy in some situations. A remote attacker controlling a\ntrusted proxy could use this to cause a denial of service or possibly\nexecute arbitrary code. This issue only affected Ubuntu 19.04.\n(CVE-2019-10097)\n\nYukitsugu Sasaki discovered that the mod_rewrite component in Apache\nwas vulnerable to open redirects in some situations. A remote attacker\ncould use this to possibly expose sensitive information or bypass\nintended restrictions. (CVE-2019-10098)\n\nJonathan Looney discovered that the HTTP/2 implementation in Apache did\nnot properly limit the amount of buffering for client connections in\nsome situations. A remote attacker could use this to cause a denial\nof service (unresponsive daemon). This issue only affected Ubuntu\n18.04 LTS and Ubuntu 19.04. (CVE-2019-9517)\n",
"id": "USN-4113-1",
"modified": "2026-04-27T14:11:24Z",
"published": "2019-08-29T22:31:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4113-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-0197"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-9517"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-10081"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-10082"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-10092"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-10097"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-10098"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "apache2 vulnerabilities",
"upstream": [
"UBUNTU-CVE-2019-0197",
"UBUNTU-CVE-2019-9517",
"UBUNTU-CVE-2019-10081",
"UBUNTU-CVE-2019-10082",
"UBUNTU-CVE-2019-10092",
"UBUNTU-CVE-2019-10097",
"UBUNTU-CVE-2019-10098"
]
}
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Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
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